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Cycled Testosterone Replacement Study

The Effects of Cyclic Testosterone Administration on Muscle Function in Older Individuals

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00957528
Enrollment
26
Registered
2009-08-12
Start date
2006-01-31
Completion date
2008-12-31
Last updated
2012-09-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypogonadism

Keywords

Low Normal Testosterone, Male, Aging

Brief summary

The purpose of this study is to determine whether testosterone (male hormone) therapy is effective if administered in a cyclic fashion (periodic dosing) compared to continuous dosing in men aged 60 to 85 years. Effectiveness will be determined based on improvements in body composition, muscle metabolism, muscle strength, and bone metabolism.

Detailed description

Men and women undergo a progressive reduction in lean muscle mass (sarcopenia) with advancing age regardless of their level of physical activity. A 12-yr longitudinal study in healthy sedentary older men showed a correlation between loss of muscle cross-sectional area and muscle strength of the thigh, quadriceps, and flexor muscles. Once weakened, older individuals are prone to falls that prevent independent living and diminish the quality of life. There is a need to develop therapies to counteract losses in skeletal muscle strength with aging. Studies show that exercise and testosterone administration increase skeletal muscle mass and strength in older men. However, the increase in muscle strength by testosterone in older men has not been consistent in all studies. Androgens increase muscle mass by either increasing muscle protein synthesis or inhibiting muscle protein breakdown. This proposal will investigate the hypothesis that cyclic testosterone administration (monthly on/off cycles) will preferentially increase muscle protein synthesis and result in a consistent and greater improvement in muscle strength than continuous testosterone administration.

Interventions

DRUGTestosterone

Weekly im injections of 100 mg testosterone enanthate.

DRUGPlacebo

Weekly IM injections of sesame oil.

Sponsors

The University of Texas Medical Branch, Galveston
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
MALE
Age
60 Years to 85 Years
Healthy volunteers
Yes

Inclusion criteria

* Availability of transportation (i.e., subjects must be able to provide their own transportation to UTMB).

Exclusion criteria

* Medications such as anticoagulants (Coumadin) and glucocorticoids. * History of angina that occurs with exertion or at rest. * History of myocardial infarction within the last 12 months. * Failure to successfully complete an exercise stress test using the Bruce protocol. Subjects that demonstrate ≥ 0.1 mV horizontal or downsloping ST segment depression, a drop in systolic blood pressure of ≥ 10 mm Hg, and/or frequent or repetitive arrhythmias (defined as ≥ 10 PVC/min, or couplets) during the stress test will be excluded. * LDL cholesterol above 200 mg/dL. * History of prostatic cancer. * Elevated prostate specific antigen (PSA) above 4.0 µg/L, or severe benign prostatic hypertrophy (BPH) by history (frequent urination, reduced stream). * Serum total testosterone concentrations of greater than 500 ng/dL. * Subjects who engage in high intensity, elite training on a regular basis. * Major medical illness such as diabetes, chronic obstructive pulmonary disease, or sleep apnea. * Recent history of smoking tobacco. * Hematocrit greater than 51%. * Morbidly obese older men (BMI \> 35). * Hypertension: Blood pressure on three consecutive measurements taken at one week intervals that has a systolic pressure ≥ 140 or a diastolic blood pressure ≥ 90. Subjects will be included if they are on two or less blood pressure medications and have a blood pressure below these criteria. * History of hepatitis or a 3-fold elevation of liver function tests (Alk phos, ALT, AST). * Bone related disorders such as osteoporosis or parathyroid disease. * DEXA scans revealing lumbar spine T-scores of less than -2.5. * Subjects currently taking anti-bone-resorptive agents such as bisphosphonates, parathyroid hormone, or calcitonin.

Design outcomes

Primary

MeasureTime frameDescription
Changes in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five Months5 MonthsThe fractional synthetic rate (FSR) of mixed muscle is calculated by directly measuring the incorporation of L-\[ring-13C6\]-phenylalanine into protein (%/hr),, using the precursor-product model: FSR = \[(EP2 - EP1)/(EM•t)\]•60•100, where EP1 and EP2 are the enrichments of bound L-\[ring-13C6\]-phenylalanine in the first and second muscle biopsies, t is the time interval (min) between biopsies, and EM is the mean L-\[ring-13C6\]-phenylalanine enrichment in the muscle intracellular pool.
Changes in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five Months5 monthsMaximum weight (pounds) lifted using Cybex weight machine in a single effort(1-RM) for upper extremities (biceps and triceps) and lower extremities quadriceps and hamstrings).
Changes in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)5 monthsLean body mass is expressed in grams as calculated by Hologic DEXA.

Secondary

MeasureTime frameDescription
Changes in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)5 monthsBone mineral density measure by measured by dual energy x-ray absorptiometry (DEXA)measured at baseline and a five months
Changes in Serum Markers of Bone Turnover.5 monthsMeasures of bone turnover markers in serum samples at baseline and at five months.The bone turnover markers analyzed include: Markers associated with bone breakdown NTX (N-telopeptide) TRAP5b (tartrate-resistant acid phosphatase isoform 5b) Markers associated with bone formation Osteocalcin BAP (bone specific alkaline phosphatase) Regulators of bone formation iPTH (intact parathyroid hormone) increases in response to bone loss Calcitonin inhibits bone formation in response to elevated levels of serum calcium
9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory Cytokines5 monthsSerum inflammatory biomarkers (Interleukin B-1, 2,5,6,7,8,10,12 13, Interferon gamma, GM-CSF, and Tumor Necrosis Factor alpha)as measured by immunoassay at baseline and at five months

Countries

United States

Participant flow

Recruitment details

Subject recruitment began in January, 2006 and was closed on December, 2011. Subjects were enrolled at the University of Texas Medical Branch in the Institute for Translational Sciences Clinical Research Center (ITS-CRC).

Pre-assignment details

Screening was conducted at the ITS-CRC where the subject was consented and screening was conducted to identify eligible subjects.Screening included blood testing and a stress test to determine fitness for physical function testing. Subjects were excluded due to elevated PSA levels, testosterone levels above entry criteria or occult disease.

Participants by arm

ArmCount
Placebo
Weekly placebo treatment for a duration of 5 months.
8
Monthly Cycled Testosterone
A month of weekly testosterone treatment alternated by a month of weekly placebo treatment for a duration of 5 months.
9
Continuous Testosterone
Weekly testosterone treatment for a duration of 5 months
9
Total26

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyProtocol Violation010
Overall StudyWithdrawal by Subject001

Baseline characteristics

CharacteristicMonthly Cycled TestosteroneContinuous TestosteronePlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
6 Participants7 Participants3 Participants16 Participants
Age, Categorical
Between 18 and 65 years
3 Participants2 Participants5 Participants10 Participants
Age Continuous71.6 years
STANDARD_DEVIATION 7.78
73.3 years
STANDARD_DEVIATION 7.54
65.4 years
STANDARD_DEVIATION 3.22
70.1 years
STANDARD_DEVIATION 6.18
Region of Enrollment
United States
9 participants9 participants8 participants26 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
9 Participants9 Participants8 Participants26 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
1 / 80 / 81 / 8
serious
Total, serious adverse events
0 / 80 / 80 / 8

Outcome results

Primary

Changes in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five Months

The fractional synthetic rate (FSR) of mixed muscle is calculated by directly measuring the incorporation of L-\[ring-13C6\]-phenylalanine into protein (%/hr),, using the precursor-product model: FSR = \[(EP2 - EP1)/(EM•t)\]•60•100, where EP1 and EP2 are the enrichments of bound L-\[ring-13C6\]-phenylalanine in the first and second muscle biopsies, t is the time interval (min) between biopsies, and EM is the mean L-\[ring-13C6\]-phenylalanine enrichment in the muscle intracellular pool.

Time frame: 5 Months

Population: Subjects who completed the entire treatment protocol

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsBaseline0.05 Percent per hour (%/hr)Standard Deviation 0.01
PlaceboChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsFive Months0.066 Percent per hour (%/hr)Standard Deviation 0.02
Monthly Cycled TestosteroneChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsBaseline0.06 Percent per hour (%/hr)Standard Deviation 0.01
Monthly Cycled TestosteroneChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsFive Months0.094 Percent per hour (%/hr)Standard Deviation 0.014
Continuous TestosteroneChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsBaseline0.06 Percent per hour (%/hr)Standard Deviation 0.01
Continuous TestosteroneChanges in Basal Muscle Protein Synthesis and Breakdown as Measured by Stable Isotope Metabolic Studies at Baseline and at Five MonthsFive Months0.101 Percent per hour (%/hr)Standard Deviation 0.043
Primary

Changes in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)

Lean body mass is expressed in grams as calculated by Hologic DEXA.

Time frame: 5 months

Population: All subjects who successfully completed the five month protocol.

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Baseline62344 gramsStandard Deviation 10368
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 162994.7 gramsStandard Deviation 10308.8
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 262038.7 gramsStandard Deviation 10556.5
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 362256.5 gramsStandard Deviation 9881.65
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 462755.4 gramsStandard Deviation 10756.2
PlaceboChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Month 561250.6 gramsStandard Deviation 11283.3
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Month 558846.9 gramsStandard Deviation 6995.48
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Baseline57101 gramsStandard Deviation 6671.5
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 359186 gramsStandard Deviation 6267.63
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 459838.6 gramsStandard Deviation 7010.73
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 159155.4 gramsStandard Deviation 6890.9
Monthly Cycled TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 256787.8 gramsStandard Deviation 6444.16
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 160469.3 gramsStandard Deviation 6555.92
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 262680.1 gramsStandard Deviation 4034.41
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Month 560871.4 gramsStandard Deviation 6840.45
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 361167.3 gramsStandard Deviation 7530.43
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Baseline57746 gramsStandard Deviation 6485.1
Continuous TestosteroneChanges in Lean Body Mass as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lean Body Mass Month 461436.6 gramsStandard Deviation 6997.17
Primary

Changes in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five Months

Maximum weight (pounds) lifted using Cybex weight machine in a single effort(1-RM) for upper extremities (biceps and triceps) and lower extremities quadriceps and hamstrings).

Time frame: 5 months

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 339 poundsStandard Deviation 9
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Baseline40 poundsStandard Deviation 9
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Baseline46 poundsStandard Deviation 6
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Baseline70 poundsStandard Deviation 21
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 139 poundsStandard Deviation 10
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 238 poundsStandard Deviation 9
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Baseline39 poundsStandard Deviation 12
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 438 poundsStandard Deviation 10
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 540 poundsStandard Deviation 11
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 140 poundsStandard Deviation 7
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 241 poundsStandard Deviation 8
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 342 poundsStandard Deviation 8
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 442 poundsStandard Deviation 8
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 542 poundsStandard Deviation 8
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 148 poundsStandard Deviation 7
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 251 poundsStandard Deviation 11
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 348 poundsStandard Deviation 7
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 448 poundsStandard Deviation 7
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 548 poundsStandard Deviation 10
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 170 poundsStandard Deviation 13
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 269 poundsStandard Deviation 14
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 374 poundsStandard Deviation 13
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extensuion Month 472 poundsStandard Deviation 14
PlaceboChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 572 poundsStandard Deviation 14
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 380 poundsStandard Deviation 14
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Baseline39 poundsStandard Deviation 10
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 444 poundsStandard Deviation 8
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 343 poundsStandard Deviation 20
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Baseline41 poundsStandard Deviation 14
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 242 poundsStandard Deviation 9
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 277 poundsStandard Deviation 16
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Baseline44 poundsStandard Deviation 7
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 545 poundsStandard Deviation 8
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extensuion Month 479 poundsStandard Deviation 16
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Baseline73 poundsStandard Deviation 15
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 141 poundsStandard Deviation 10
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 450 poundsStandard Deviation 10
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 141 poundsStandard Deviation 10
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 146 poundsStandard Deviation 9
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 343 poundsStandard Deviation 7
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 240 poundsStandard Deviation 10
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 545 poundsStandard Deviation 13
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 585 poundsStandard Deviation 19
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 343 poundsStandard Deviation 11
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 247 poundsStandard Deviation 9
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 550 poundsStandard Deviation 11
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 443 poundsStandard Deviation 13
Monthly Cycled TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 173 poundsStandard Deviation 10
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 441 poundsStandard Deviation 12
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 538 poundsStandard Deviation 11
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 137 poundsStandard Deviation 4
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 244 poundsStandard Deviation 10
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 167 poundsStandard Deviation 15
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 344 poundsStandard Deviation 14
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extensuion Month 482 poundsStandard Deviation 14
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 444 poundsStandard Deviation 12
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Month 545 poundsStandard Deviation 10
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 278 poundsStandard Deviation 12
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 141 poundsStandard Deviation 8
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 583 poundsStandard Deviation 17
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 248 poundsStandard Deviation 11
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Baseline32 poundsStandard Deviation 9
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Extension Baseline38 poundsStandard Deviation 9
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 348 poundsStandard Deviation 14
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Baseline40 poundsStandard Deviation 9
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Month 376 poundsStandard Deviation 21
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Extension Baseline66 poundsStandard Deviation 16
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 134 poundsStandard Deviation 8
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 450 poundsStandard Deviation 12
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 239 poundsStandard Deviation 9
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsArm Curl Month 337 poundsStandard Deviation 13
Continuous TestosteroneChanges in Muscle Strength as Measured by Maximal Voluntary Contraction Tests (Arm Curl) at Baseline, One Month, Two Months, Three Months, Four Months, and at Five MonthsLeg Curl Month 551 poundsStandard Deviation 12
Secondary

9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory Cytokines

Serum inflammatory biomarkers (Interleukin B-1, 2,5,6,7,8,10,12 13, Interferon gamma, GM-CSF, and Tumor Necrosis Factor alpha)as measured by immunoassay at baseline and at five months

Time frame: 5 months

Population: All subjects who completed the protocol.

ArmMeasureGroupValue (MEAN)Dispersion
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Baseline0.14 pg/mLStandard Deviation 0.1
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Five Months0.20833 pg/mLStandard Deviation 0.22221
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Baseline1.32 pg/mLStandard Deviation 1.18655
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Five Months2.84 pg/mLStandard Deviation 1.99008
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Baseline0.6 pg/mLStandard Deviation 0.71529
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Five Months0.705 pg/mLStandard Deviation 1.32898
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Baseline5.68375 pg/mLStandard Deviation 6.78293
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Five months5.05 pg/mLStandard Deviation 6.0643
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Baseline8.78 pg/mLStandard Deviation 10.4076
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Five Months7.68 pg/mLStandard Deviation 10.898
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Baseline4.5575 pg/mLStandard Deviation 2.67011
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Five months4.3225 pg/mLStandard Deviation 2.0872
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Baseline22.6363 pg/mLStandard Deviation 41.8883
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Five Months25.4525 pg/mLStandard Deviation 41.4135
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Baseline7.075 pg/mLStandard Deviation 12.3805
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Five Months10.902 pg/mLStandard Deviation 17.4143
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 baseline37.045 pg/mLStandard Deviation 51.9229
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 Five Months43.465 pg/mLStandard Deviation 61.0587
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Baseline10.115 pg/mLStandard Deviation 15.7219
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Five Months36.05 pg/mLStandard Deviation 68.7309
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Baseline1.52429 pg/mLStandard Deviation 2.46286
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Five Months2.27857 pg/mLStandard Deviation 3.19199
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Baseline9.0175 pg/mLStandard Deviation 4.60793
Placebo9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Five Months8.14 pg/mLStandard Deviation 3.95778
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Five Months1.312 pg/mLStandard Deviation 0.88649
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Baseline0.475 pg/mLStandard Deviation 0.76767
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Baseline11.2588 pg/mLStandard Deviation 8.19838
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 baseline23.33 pg/mLStandard Deviation 48.7029
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Five Months3.19 pg/mLStandard Deviation 3.24643
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Baseline6.66375 pg/mLStandard Deviation 4.50933
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Baseline2.4 pg/mLStandard Deviation 2.58639
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Baseline3.19 pg/mLStandard Deviation 3.24643
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Five Months8.34143 pg/mLStandard Deviation 3.65748
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Baseline10.0863 pg/mLStandard Deviation 4.51058
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Five Months1.45333 pg/mLStandard Deviation 0.94076
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Five Months23.1888 pg/mLStandard Deviation 52.3705
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 Five Months12.72 pg/mLStandard Deviation 17.2687
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Baseline0.79 pg/mLStandard Deviation 0.76783
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Baseline4.242 pg/mLStandard Deviation 4.07052
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Five months4.06286 pg/mLStandard Deviation 1.76795
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Baseline11.9688 pg/mLStandard Deviation 16.2135
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Five Months0.32286 pg/mLStandard Deviation 0.30065
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Five Months2.66 pg/mLStandard Deviation 3.7993
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Five Months8.1529 pg/mLStandard Deviation 3.70965
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Baseline4.90857 pg/mLStandard Deviation 6.43277
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Baseline4.58 pg/mLStandard Deviation 7.63943
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Five months6.487 pg/mLStandard Deviation 178.673
Monthly Cycled Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Five Months1.758 pg/mLStandard Deviation 1.98486
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Five months13.89 pg/mLStandard Deviation 28.8691
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Baseline5.19875 pg/mLStandard Deviation 2.84198
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-7 Five Months16.2763 pg/mLStandard Deviation 19.6011
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Baseline8.45625 pg/mLStandard Deviation 11.836
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Five Months36.822 pg/mLStandard Deviation 69.571
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-8 Five months11.8025 pg/mLStandard Deviation 20.6936
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Baseline13.215 pg/mLStandard Deviation 10.1743
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Baseline109.446 pg/mLStandard Deviation 240.088
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-10 Five Months135.64 pg/mLStandard Deviation 265.7
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Baseline7.94875 pg/mLStandard Deviation 16.6389
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Baseline35.3583 pg/mLStandard Deviation 56.0444
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesTNF alpha Five Months15.4138 pg/mLStandard Deviation 13.0438
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-12 Five Months58.4217 pg/mLStandard Deviation 86.8424
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Baseline1.44143 pg/mLStandard Deviation 2.04769
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-B1 Five Months2.538 pg/mLStandard Deviation 3.33404
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 baseline60.2125 pg/mLStandard Deviation 102.473
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Baseline2.538 pg/mLStandard Deviation 3.33404
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesGM-CSF Five Months14.965 pg/mLStandard Deviation 37.1713
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-2 Five Months3.862 pg/mLStandard Deviation 5.90798
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-6 Baseline10.4025 pg/mLStandard Deviation 20.5897
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Baseline1.41875 pg/mLStandard Deviation 1.92013
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-13 Five Months73.674 pg/mLStandard Deviation 148.613
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIL-5 Five Months1.94125 pg/mLStandard Deviation 3.46852
Continuous Testosterone9473Changes in Serum Inflammatory Biomarkers and Muscle Inflammatory CytokinesIFN gamma Baseline23.425 pg/mLStandard Deviation 28.8768
Secondary

Changes in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)

Bone mineral density measure by measured by dual energy x-ray absorptiometry (DEXA)measured at baseline and a five months

Time frame: 5 months

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Five Months0.61 gm/cm^2Standard Error 0.02
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Baseline1.12 gm/cm^2Standard Error 0.04
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Five Months1.07 gm/cm^2Standard Error 0.07
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Baseline0.59 gm/cm^2Standard Error 0.02
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Five Months1.08 gm/cm^2Standard Error 0.07
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis baseline1.46 gm/cm^2Standard Error 0.16
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Baseline1.06 gm/cm^2Standard Error 0.07
PlaceboChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis Five Months1.28 gm/cm^2Standard Error 0.14
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Baseline1.00 gm/cm^2Standard Error 0.05
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Baseline1.07 gm/cm^2Standard Error 0.05
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Baseline0.59 gm/cm^2Standard Error 0.02
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Five Months0.59 gm/cm^2Standard Error 0.03
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis baseline1.15 gm/cm^2Standard Error 0.04
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis Five Months1.14 gm/cm^2Standard Error 0.04
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Five Months1.00 gm/cm^2Standard Error 0.05
Monthly Cycled TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Five Months1.05 gm/cm^2Standard Error 0.05
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Five Months0.62 gm/cm^2Standard Error 0.03
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Baseline1.12 gm/cm^2Standard Error 0.05
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Total Five Months1.14 gm/cm^2Standard Error 0.03
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Baseline1.16 gm/cm^2Standard Error 0.04
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Lumbar Spine Five Months1.19 gm/cm^2Standard Error 0.06
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis baseline1.27 gm/cm^2Standard Error 0.04
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Pelvis Five Months1.28 gm/cm^2Standard Error 0.06
Continuous TestosteroneChanges in Bone Mineral Density as Measured by Dual Energy X-ray Absorptiometry (DEXA)Forearm Baseline0.61 gm/cm^2Standard Error 0.02
Secondary

Changes in Serum Markers of Bone Turnover.

Measures of bone turnover markers in serum samples at baseline and at five months.The bone turnover markers analyzed include: Markers associated with bone breakdown NTX (N-telopeptide) TRAP5b (tartrate-resistant acid phosphatase isoform 5b) Markers associated with bone formation Osteocalcin BAP (bone specific alkaline phosphatase) Regulators of bone formation iPTH (intact parathyroid hormone) increases in response to bone loss Calcitonin inhibits bone formation in response to elevated levels of serum calcium

Time frame: 5 months

ArmMeasureGroupValue (MEAN)Dispersion
PlaceboChanges in Serum Markers of Bone Turnover.Osteocalcin Five Months8 nM BCE (Bone Collagen Equivalents)Standard Error 0.5
PlaceboChanges in Serum Markers of Bone Turnover.iPTH Baseline40 nM BCE (Bone Collagen Equivalents)Standard Error 0.3
PlaceboChanges in Serum Markers of Bone Turnover.BAP Five Months21 nM BCE (Bone Collagen Equivalents)Standard Error 1.3
PlaceboChanges in Serum Markers of Bone Turnover.TRAP5b Baseline2 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
PlaceboChanges in Serum Markers of Bone Turnover.iPTH Five Months45 nM BCE (Bone Collagen Equivalents)Standard Error 7
PlaceboChanges in Serum Markers of Bone Turnover.Osteocalcin Baseline8 nM BCE (Bone Collagen Equivalents)Standard Error 0.2
PlaceboChanges in Serum Markers of Bone Turnover.NTX Five Months13 nM BCE (Bone Collagen Equivalents)Standard Error 1.1
PlaceboChanges in Serum Markers of Bone Turnover.Calcitonin Baseline3 nM BCE (Bone Collagen Equivalents)Standard Error 0.4
PlaceboChanges in Serum Markers of Bone Turnover.TRAP5b Five Months2 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
PlaceboChanges in Serum Markers of Bone Turnover.BAP Baseline22 nM BCE (Bone Collagen Equivalents)Standard Error 1.5
PlaceboChanges in Serum Markers of Bone Turnover.Calcitonin Five months3 nM BCE (Bone Collagen Equivalents)Standard Error 0.4
PlaceboChanges in Serum Markers of Bone Turnover.NTX Baseline12 nM BCE (Bone Collagen Equivalents)Standard Error 1.3
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.Calcitonin Five months4 nM BCE (Bone Collagen Equivalents)Standard Error 0.5
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.NTX Baseline14 nM BCE (Bone Collagen Equivalents)Standard Error 1.4
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.NTX Five Months11 nM BCE (Bone Collagen Equivalents)Standard Error 0.7
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.TRAP5b Baseline2 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.BAP Five Months19 nM BCE (Bone Collagen Equivalents)Standard Error 1.9
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.TRAP5b Five Months2 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.iPTH Baseline37 nM BCE (Bone Collagen Equivalents)Standard Error 6
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.Osteocalcin Five Months8 nM BCE (Bone Collagen Equivalents)Standard Error 0.5
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.iPTH Five Months28 nM BCE (Bone Collagen Equivalents)Standard Error 3
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.Osteocalcin Baseline8 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.Calcitonin Baseline4 nM BCE (Bone Collagen Equivalents)Standard Error 0.6
Monthly Cycled TestosteroneChanges in Serum Markers of Bone Turnover.BAP Baseline20 nM BCE (Bone Collagen Equivalents)Standard Error 2.3
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.iPTH Five Months60 nM BCE (Bone Collagen Equivalents)Standard Error 15
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.Osteocalcin Baseline9 nM BCE (Bone Collagen Equivalents)Standard Error 0.7
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.Osteocalcin Five Months7 nM BCE (Bone Collagen Equivalents)Standard Error 0.8
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.BAP Baseline17 nM BCE (Bone Collagen Equivalents)Standard Error 1.5
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.BAP Five Months15 nM BCE (Bone Collagen Equivalents)Standard Error 1.7
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.iPTH Baseline53 nM BCE (Bone Collagen Equivalents)Standard Error 10
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.TRAP5b Five Months1 nM BCE (Bone Collagen Equivalents)Standard Error 0.3
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.Calcitonin Baseline4 nM BCE (Bone Collagen Equivalents)Standard Error 1.3
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.Calcitonin Five months3 nM BCE (Bone Collagen Equivalents)Standard Error 0.3
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.NTX Baseline15 nM BCE (Bone Collagen Equivalents)Standard Error 1.9
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.NTX Five Months11 nM BCE (Bone Collagen Equivalents)Standard Error 1.5
Continuous TestosteroneChanges in Serum Markers of Bone Turnover.TRAP5b Baseline2 nM BCE (Bone Collagen Equivalents)Standard Error 0.4

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026