Age
Conditions
Keywords
assess the effect of age on the EAR and RDA for protein
Brief summary
The purpose of this study was to assess the effect of age on the estimated average requirement and adequate allowance for dietary protein.
Interventions
OTHERLower Protein
Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.
OTHERMedium Protein
Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.
OTHERHigher Protein
Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.
Sponsors
Purdue University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
Yes
Inclusion criteria
* Age: 21-46 years, 63-81 years old * Not diagnosed with diabetes or metabolic syndrome * Clinically normal blood laboratory values
Exclusion criteria
* Age: 21 years of younger, 47-62 years old, and 82 years and older * BMI: 20-29 kg/m * Weight stable: \<2kg change within the last 3 months * Physical Activity: constant habitual pattern, no deviation \>1x week of 30/minute sessions within the last 3 months Clinically abnormal values: * Blood * Urine Also, exclude any: * Using meds that would influence appetite * Using any anti-inflammatory steroid medications * Has a joint replacement * A medical condition that might place them at risk for participating in the study or interfere with successful completion of the study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| To determine the dietary protein requirement of older men and women. | 57 days |
Secondary
| Measure | Time frame |
|---|---|
| What is the lowest amount of protein that a man or women should eat each day to help him or her stay healthy? | 57 days |
Countries
United States
Outcome results
None listed