TABLE 2.
Characteristics of participants who consumed a low, medium, or high dose of intrinsically labeled whey protein1
| T1 (n = 25) | T2 (n = 25) | T3 (n = 26) | |
|---|---|---|---|
| Dose | |||
| g | 22 ± 2a | 23 ± 2b | 24 ± 1b |
| g/kg BM | 0.23 ± 0.04a | 0.29 ± 0.01b | 0.35 ± 0.04c |
| g/kg LBM | 0.32 ± 0.04a | 0.38 ± 0.03b | 0.47 ± 0.05c |
| Age, y | 59 ± 13 | 59 ± 13 | 52 ± 11 |
| Men/women, n/n | 25/0 | 25/0 | 14/12 |
| Height, m | 1.78 ± 0.08a | 1.79 ± 0.08a | 1.72 ± 0.05b |
| BM, kg | 99.3 ± 24.3a | 79.7 ± 6.6b | 68.6 ± 8.6c |
| BMI, kg/m2 | 31.4 ± 6.6a | 25.0 ± 1.9b | 23.0 ± 2.3b |
| Fat, % | 27.4 ± 7.0a | 20.9 ± 4.6b | 23.3 ± 4.0b |
| ALM, kg | 33.5 ± 4.8a | 28.7 ± 2.5b | 22.8 ± 3.4c |
| LBM, kg | 69.4 ± 10.3a | 61.1 ± 4.4b | 50.7 ± 6.8c |
| HbA1c, % | 5.8 ± 0.4a | 5.5 ± 0.5a,b | 5.3 ± 0.3b |
| Plasma glucose, mmol/L | |||
| Fasting | 6.0 ± 0.7a | 5.5 ± 0.5b | 5.4 ± 0.5b |
| 2 h post–75-g oral-glucose | 6.6 ± 2.0a | 5.2 ± 1.5b | 5.0 ± 1.7b |
1
Values are means ± SDs. Labeled means (in a row) without a common letter differ, P < 0.05. Protein dose ranged from 0.15 to 0.27 g/kg BM for T1, 0.28 to 0.30 g/kg BM for T2, and 0.31 to 0.46 g/kg BM for T3. ALM, appendicular lean mass; BM, body mass; HbA1c, glycated hemoglobin; LBM, lean body mass; T, tertile.