TABLE 2.
Participants’ characteristics and diet nutrition composition over the supplemental period1
| WP supplement (n = 11) | CP supplement (n = 11) | |
|---|---|---|
| Age, y | 67 ± 2 | 69 ± 4 |
| Height, m | 1.61 ± 0.06 | 1.60 ± 0.03 |
| Body mass, kg | 79.7 ± 13.2 | 70.6 ± 17.1 |
| BMI, kg/m2 | 30.6 ± 4.3 | 27.6 ± 5.8 |
| Body fat, % | 45.2 ± 5.7 | 40.5 ± 6.3 |
| LBM, kg | 41.7 ± 3.7 | 40.2 ± 6.1 |
| Knee extensor 1RM, kg | 11.6 ± 3.3 | 9.4 ± 2.8 |
| Steps/d | 9630 ± 3122 | 9062 ± 2564 |
| Daily PA > 3 METs, kcal/d | 151 ± 67 | 149 ± 65 |
| Average METs | 1.5 ± 0.3 | 1.5 ± 0.2 |
| Glucose, mM | 5.1 ± 0.6 | 5.1 ± 0.5 |
| Insulin, μIU/mL | 11.7 ± 2.1 | 10.0 ± 2.4 |
| TNF-α, ng/mL | 11.5 ± 5.7 | 8.0 ± 7.2 |
| IL-6, ng/mL | 8.2 ± 5.8 | 10.2 ± 6.0 |
| CRP, mg/L | 1.6 ± 0.6 | 2.0 ± 0.5 |
| Protein, g/kg | ||
| Baseline | 1.00 ± 0.03 | 0.98 ± 0.04 |
| Supplementation | 1.76 ± 0.12* | 1.87 ± 0.21* |
| Energy, kcal/kg | ||
| Baseline | 31 ± 2 | 35 ± 4 |
| Supplementation | 31 ± 3 | 34 ± 5 |
1Values are means ± SDs. *Significantly different from baseline, P < 0.0001. CP, collagen peptide; CRP, C-reactive protein; LBM, lean body mass; MET, metabolic equivalent; PA, physical activity; WP, whey protein; 1RM, one-repetition maximum.