Skip to content

EXErcise Regimen Designed to Improve Functional Mobility, Body Composition, and Strength After Treatment for Breast CA

Prospective Study of an EXErcise Regimen Designed to Improve Functional Mobility, Body Composition, and Strength After Treatment for Breast Cancer

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05747209
Acronym
EXERT-BC
Enrollment
43
Registered
2023-02-28
Start date
2022-10-01
Completion date
2024-09-19
Last updated
2025-06-24

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

Conditions

Breast Cancer Female

Brief summary

The goal of this clinical trial is to learn how a group resistance training plan can improve body mobility and strength in female breast cancer patients who have completed their breast cancer treatment. The main questions it aims to answer are: * Is resistance training feasible following breast cancer treatment * Can it improve the body's mobility and strength lost as a result of the breast cancer treatment * can it improve the body's composition (for example muscle mass) * can resistance training increase one's activity level and help prevent weight gain, perhaps, lowering the risk of cancer recurrence. Participants will attend a group resistance training exercise group program, 3-4 times per week, under close supervision with monitoring a participant's ability to safely and effectively complete the program. The exercises include: lunges, squats and dead lifts.

Detailed description

Obesity and low muscle mass, i.e. poor body composition, is a risk factor for breast cancers and disease recurrence after treatment. Furthermore, weight gain during and after treatment for breast cancer is associated with higher risk of recurrence, distant metastases, and death. Activity levels have been repeatedly associated with a lower risk of cancer incidence, improved outcomes after cancer treatment and improved overall survival, yet the majority of breast cancer survivors do not meet adequate daily activity level recommendations. This protocol seeks to prospectively follow forty (40) female breast cancer patients (ages 20-95) during exercise who are post-cancer treatment and to assess the safety and feasibility of a monitored group exercise regimen utilizing high-load resistance training and functional exercises with compound movements under close supervision and with the goal of improving functional mobility, body composition, and strength after cancer treatment. This regimen is a standard of care regimen utilized in strength and conditioning protocols. The investigators hypothesize that an observed exercise regimen such as this will prove safe and feasible in women and may improve functional mobility, body composition and resting metabolic rate. The exercise regimen will utilize a mixture of compound movements utilizing mainly closed kinetic chain movements (CKC), focusing on exercises with the goal of improving physical and metabolic function, mobility, muscle mass and body composition utilizing guidelines from the National Strength and Conditioning Association (NSCA). CKC exercises include lunges, squats, and dead lifts.

Interventions

OTHERObservation of Exercise Program Adherence

Observation of a monitored group exercise regimen utilizing standard of care high-load resistance training and functional exercises with compound movements under close supervision and with the goal of improving functional mobility, body composition, and strength after cancer treatment to study adherence and attendance to the exercise program.

Sponsors

Colin Champ, MD
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
OTHER

Eligibility

Sex/Gender
FEMALE
Age
20 Years to 89 Years
Healthy volunteers
No

Inclusion criteria

1. Age 20-89 years 2. Women with a biopsy proven diagnosis of ductal carcinoma in situ or invasive carcinoma of the breast 3. Women must have undergone breast conservation therapy with no neoadjuvant or adjuvant chemotherapy (adjuvant endocrine therapy is permitted) 4. Participants must have abstained from smoking for at least 12 months 5. Women of child-bearing potential must have had a pregnancy test prior to initiation of radiation therapy (standard protocol for radiation therapy); verbally confirm lack of pregnancy prior to enrollment; and, consent to use adequate contraception during the course of the study. 6. Participants must be determined capable of engaging in resistance training. 7. Participants must have a schedule amenable to three prescheduled workout sessions per week, scheduled during the day. 8. Participants must complete a Functional Mobility Screen (FMS) and be determined safe to engage in the workout regimen by the study exercise personnel. 9. Participants must be determined capable of engaging in group resistance training sessions by exercise personnel and/or study PI 10. Participants must be able to get down and up from the ground and squat their body weight.

Exclusion criteria

1. Any treatment with chemotherapy for breast cancer 2. Inability to get and down off the ground or squat body weight 3. Inability to safely engage in group sessions 4. Severe arthritic, joint, cardiovascular, or musculoskeletal condition

Design outcomes

Primary

MeasureTime frameDescription
Changes in Strength From Baseline Through Study Completion, up to 3 MonthsBaseline and months 1, 2, and 3Strength will be calculated via load lifted throughout the entire regimen as weight x repetitions x sets at the end of months 1, 2, and 3.
Session AttendanceBaseline and Three (3) monthsCalculated as the percentage of participants completing at least 75% of the planned exercise sessions. Dropout rate, defined as individuals who quit the workout regimen altogether, is expected to be less 20%.
Change in Adipose Tissue (InBody, kg)Baseline and Three (3) monthsChange in adipose tissue (kg) pre and post resistance training regimen measured via InBody 970 bioelectrical impedance analysis. Values reported are median changes with interquartile range (IQR).
Change in Adipose Tissue (Ultrasound, Lbs)Baseline and Three (3) monthsChange in adipose tissue (pounds) pre and post resistance training regimen measured via ultrasound. Values reported are median changes with interquartile range (IQR).
Change in Muscle MassBaseline and Three (3) monthsChanges in percent muscle mass (measured by InBody bioelectrical impedance analysis) from baseline to three months.
Change in Fat-Free MassBaseline and Three (3) monthsChanges in percent fat-free mass (measured by ultrasound) from baseline to three months.
Quality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsBaseline and Three (3) monthsEuroQol-5 Dimensions-5 Levels (EQ-5D-5L) test pre and post regimen. This test is a descriptive system that is a preference-based health-related quality of life measure with one question for each of the five dimensions that include mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. There is an additional question measuring an individual's current overall health-related quality of life. Total score for the 5 questions ranges from 5 (no problems on any dimension) to 25 (extreme problems on all dimensions). Calculated by assigning scores of 1 (minimum), 2, 3, 4, and 5 (maximum), to the response categories of no problems, slight problems, moderate problems, severe problems, and extreme problems/unable to, respectively. Higher scores mean worse outcomes. There is an additional question scored from 0 to 100 recorded for their current overall health-related quality of life. 100 means the best health and 0 means the worst health they can imagine.
Activity Levels Via Godin Questionnaire3 monthsChange in activity levels measured by Godin Questionnaire pre and post regimen, specifically strenuous, moderate and mild/light exercise with a score from 0 to unlimited. The Godin scale score lists 24 or more units of exercise as active, 14-23 units as moderately active, and less than 14 units as insufficiently active/sedentary
Resting Metabolic Rate as Calories Burned Per DayBaseline and Three (3) monthsChange in resting metabolic rate (RMR) pre and post regimen measured via ultrasound and bioimpedance analysis.
Functional Movement ScreenBaseline and Three (3) monthsA functional movement screen will be performed pre and post regimen to assess change in overall score Functional movement screen (FMS) total score for the 7 movement patterns assessed by an examiner ranges from 0 to 21. A score below 14 is felt to identify individuals at risk of injury. This is calculated by assigning scores of 0 (minimum), 1, 2, and 3 (maximum) to the response categories of if any pain felt by the subject during the movement, subject is unable to perform the movement, subject performs the movement through compensatory movements, and subject performs the movement correctly, respectively. A score below 14 is felt to identify individuals at risk of injury. Higher scores mean a better outcome.
Y-balance ScoreBaseline and Three (3) monthsA Y-balance test will be performed pre and post regimen to assess change Y-balance score adds up the distance each leg can move in the front and side directions, divided by the length of the hip. This correlates inversely with fall risk.

Secondary

MeasureTime frameDescription
Participants Will Undergo an Assessment 1 Year Following the Exercise Program.12 monthsParticipants will be assessed 1 year following exercises as they were at baseline and post exercise as Standard of Care (SOC). The SOC assessments will encompass weight, height, BMI, body composition, resting metabolic rate, quality of life questionnaires and exercise forms, strength, and mobility

Countries

United States

Participant flow

Pre-assignment details

There were 54 total patients screened for eligibility (Fig. 2). There were 9 patients who chose not to participate due to scheduling conflicts There were 2 patients screened who were referred to PT due to joint & musculoskeletal conditions precluding safe training

Participants by arm

ArmCount
Standard High-load Resistance Training
Standard exercise regimen utilizes a mixture of compound and isolated movements, focusing on compound exercises. The regimen is a typical standard of care resistance training program and sports performance and strength and conditioning facilities. The observed classes will take place three times per week. Warm-up exercises focused on mobility, flexibility and core activation will be performed to reduce the risk of injury. Each individual exercise workout will generally progress from most intense, CKC, compound, and athletic movements to least intense throughout the workout to maximize safety. Additionally, each workout will provide full body resistance training to focus on functional exercises, intensity, and efficiency. Each workout will take approximately 45 minutes. The total exercise regimen will last 3 months. Observation of Exercise Program Adherence: Observation of a monitored group exercise regimen utilizing standard of care high-load resistance training and functional exercises with compound movements under close supervision and with the goal of improving functional mobility, body composition, and strength after cancer treatment to study adherence and attendance to the exercise program.
43
Total43

Baseline characteristics

CharacteristicStandard High-load Resistance Training
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
43 Participants
Age, Continuous56.5 years
Race and Ethnicity Not Collected— Participants
Region of Enrollment
United States
43 participants
Sex: Female, Male
Female
43 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 43
other
Total, other adverse events
0 / 43
serious
Total, serious adverse events
0 / 43

Outcome results

Primary

Activity Levels Via Godin Questionnaire

Change in activity levels measured by Godin Questionnaire pre and post regimen, specifically strenuous, moderate and mild/light exercise with a score from 0 to unlimited. The Godin scale score lists 24 or more units of exercise as active, 14-23 units as moderately active, and less than 14 units as insufficiently active/sedentary

Time frame: 3 months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingActivity Levels Via Godin QuestionnairePost-intervention41.5 score on a scale
Standard High-load Resistance TrainingActivity Levels Via Godin QuestionnaireBaseline23.5 score on a scale
Primary

Change in Adipose Tissue (InBody, kg)

Change in adipose tissue (kg) pre and post resistance training regimen measured via InBody 970 bioelectrical impedance analysis. Values reported are median changes with interquartile range (IQR).

Time frame: Baseline and Three (3) months

Population: Participants whose change in adipose tissue was measured.

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingChange in Adipose Tissue (InBody, kg)Baseline30.7 kg
Standard High-load Resistance TrainingChange in Adipose Tissue (InBody, kg)Post-Intervention28.2 kg
Primary

Change in Adipose Tissue (Ultrasound, Lbs)

Change in adipose tissue (pounds) pre and post resistance training regimen measured via ultrasound. Values reported are median changes with interquartile range (IQR).

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingChange in Adipose Tissue (Ultrasound, Lbs)Baseline37.4 percentage of Body Fat
Standard High-load Resistance TrainingChange in Adipose Tissue (Ultrasound, Lbs)Post-Intervention32.6 percentage of Body Fat
Primary

Change in Fat-Free Mass

Changes in percent fat-free mass (measured by ultrasound) from baseline to three months.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingChange in Fat-Free MassInBody fat Free Mass Post-intervention46.9 kg
Standard High-load Resistance TrainingChange in Fat-Free MassInBody fat Free Mass Baseline45.9 kg
Primary

Change in Muscle Mass

Changes in percent muscle mass (measured by InBody bioelectrical impedance analysis) from baseline to three months.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingChange in Muscle MassInBody Muscle Mass Baseline25.0 kg
Standard High-load Resistance TrainingChange in Muscle MassInBody Muscle Mass Post-intervention25.6 kg
Primary

Changes in Strength From Baseline Through Study Completion, up to 3 Months

Strength will be calculated via load lifted throughout the entire regimen as weight x repetitions x sets at the end of months 1, 2, and 3.

Time frame: Baseline and months 1, 2, and 3

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Split Squat, Month 1 (Week 4)192 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Split Squat, Month 2 (Week 4)383 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Split Squat, Month 3 (Week 4)383 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Trap Bar Deadlift, Month 1 (Week 4)1131 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Trap Bar Deadlift, Month 2 (Week 4)1210 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsLoad Trap Bar Deadlift, Month 3 (Week 4)1415 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsIncline Dumbbell Bench, Month 1 (Week 4)170 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsIncline Dumbbell Bench, Month 2 (Week 4)261 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsIncline Dumbbell Bench, Month 3 (Week 4)272 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsBird Dog Row, Month 1 (Week 4)204 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsBird Dog Row, Month 2 (Week 4)272 Load (kilograms x Repetitions x Sets)
Standard High-load Resistance TrainingChanges in Strength From Baseline Through Study Completion, up to 3 MonthsBird Dog Row, Month 3 (Week 4)340 Load (kilograms x Repetitions x Sets)
Primary

Functional Movement Screen

A functional movement screen will be performed pre and post regimen to assess change in overall score Functional movement screen (FMS) total score for the 7 movement patterns assessed by an examiner ranges from 0 to 21. A score below 14 is felt to identify individuals at risk of injury. This is calculated by assigning scores of 0 (minimum), 1, 2, and 3 (maximum) to the response categories of if any pain felt by the subject during the movement, subject is unable to perform the movement, subject performs the movement through compensatory movements, and subject performs the movement correctly, respectively. A score below 14 is felt to identify individuals at risk of injury. Higher scores mean a better outcome.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingFunctional Movement ScreenBaseline9 score on a scale
Standard High-load Resistance TrainingFunctional Movement ScreenPost-intervention12 score on a scale
Primary

Quality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 Levels

EuroQol-5 Dimensions-5 Levels (EQ-5D-5L) test pre and post regimen. This test is a descriptive system that is a preference-based health-related quality of life measure with one question for each of the five dimensions that include mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. There is an additional question measuring an individual's current overall health-related quality of life. Total score for the 5 questions ranges from 5 (no problems on any dimension) to 25 (extreme problems on all dimensions). Calculated by assigning scores of 1 (minimum), 2, 3, 4, and 5 (maximum), to the response categories of no problems, slight problems, moderate problems, severe problems, and extreme problems/unable to, respectively. Higher scores mean worse outcomes. There is an additional question scored from 0 to 100 recorded for their current overall health-related quality of life. 100 means the best health and 0 means the worst health they can imagine.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 2 Self-Care Score Post-Intervention5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 3 Usual Activities Score Baseline5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 4 Pain / Discomfort Score Post-Intervention4 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 6 Current Overall Health-Related Quality of Life Score Baseline73.5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 1: Mobility Score Baseline5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 1: Mobility Score Post-Intervention5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 2 Self-Care Score Baseline5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 3 Usual Activities Score Post-Intervention5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 4 Pain / Discomfort Score Baseline4 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 5 Anxiety / Depression Score Baseline5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 5 Anxiety / Depression Score Post-Intervention5 score on a scale
Standard High-load Resistance TrainingQuality of Life Via the EuroQol Group Survey EuroQol-5 Dimensions-5 LevelsEuroQol 5 Dimension 6 Current Overall Health-Related Quality of Life Score Post-Intervention85 score on a scale
Primary

Resting Metabolic Rate as Calories Burned Per Day

Change in resting metabolic rate (RMR) pre and post regimen measured via ultrasound and bioimpedance analysis.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingResting Metabolic Rate as Calories Burned Per DayInBody RMR Post-intervention1381.5 kcal
Standard High-load Resistance TrainingResting Metabolic Rate as Calories Burned Per DayInBody RMR Baseline1365.5 kcal
Standard High-load Resistance TrainingResting Metabolic Rate as Calories Burned Per DayUS RMR Baseline1403 kcal
Standard High-load Resistance TrainingResting Metabolic Rate as Calories Burned Per DayUS RMR Post-intervention1437 kcal
Primary

Session Attendance

Calculated as the percentage of participants completing at least 75% of the planned exercise sessions. Dropout rate, defined as individuals who quit the workout regimen altogether, is expected to be less 20%.

Time frame: Baseline and Three (3) months

Population: Participants who completed at least 75% of the planned exercise sessions.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard High-load Resistance TrainingSession Attendance39 Participants
Primary

Y-balance Score

A Y-balance test will be performed pre and post regimen to assess change Y-balance score adds up the distance each leg can move in the front and side directions, divided by the length of the hip. This correlates inversely with fall risk.

Time frame: Baseline and Three (3) months

ArmMeasureGroupValue (MEDIAN)
Standard High-load Resistance TrainingY-balance ScoreBaseline Left Side72.3 ratio
Standard High-load Resistance TrainingY-balance ScorePost-intervention Left Side83.9 ratio
Standard High-load Resistance TrainingY-balance ScoreBaseline Right Side73.0 ratio
Standard High-load Resistance TrainingY-balance ScorePost-intervention Right Side86.2 ratio
Secondary

Participants Will Undergo an Assessment 1 Year Following the Exercise Program.

Participants will be assessed 1 year following exercises as they were at baseline and post exercise as Standard of Care (SOC). The SOC assessments will encompass weight, height, BMI, body composition, resting metabolic rate, quality of life questionnaires and exercise forms, strength, and mobility

Time frame: 12 months

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026