Table 3.
Energy intake at and macronutrient composition of breakfast, lunch, and dinner following whey protein drink ingestion in healthy young and older men.
| Young (n = 15) | Older (n = 15) | |||||||
|---|---|---|---|---|---|---|---|---|
| Breakfast | Lunch | Dinner | Total | Breakfast | Lunch | Dinner | Total | |
| Control drink | ||||||||
| Energy intake (kcal) | 947± 64 | 933 ± 74 | 1049 ± 68 | 2929 ± 131 | 896 ± 74 | 1007 ± 62 | 975 ± 79 | 2878 ± 165 |
| Fat (energy %) | 34 ± 1 | 34 ± 2 | 36 ± 2 | 29 ± 2 | 33 ± 6 | 39 ± 2 | ||
| Carbohydrate (energy %) | 43 ± 2 | 43 ± 2 | 50 ± 2 | 51 ± 2 | 46 ± 2 | 47 ± 2 | ||
| Protein (energy %) | 23 ± 1 | 23 ± 1 | 14 ± 1 | 20 ± 1 | 21 ± 1 | 14 ± 1 | ||
| 30 g (120kcal) protein drink | ||||||||
| Energy intake (kcal) | 925± 67 | 848 ±89 | 1068 ± 48 | 2841 ± 161 | 888 ± 60 | 962 ± 84 | 1023 ± 66 | 2873 ± 122 |
| Fat (energy %) | 34 ± 2 | 30 ± 3 | 38 ± 2 | 30 ± 1 | 34 ± 1 | 38 ± 2 | ||
| Carbohydrate (energy %) | 43 ± 2 | 48 ± 4 | 47 ± 1 | 51 ± 3 | 46 ± 2 | 48 ± 1 | ||
| Protein (energy %) | 23 ± 1 | 22 ± 2 | 15 ± 0 | 19 ± 1 | 20 ± 1 | 14 ± 1 | ||
| 70 g (280kcal) protein drink | ||||||||
| Energy intake (kcal) | 874 ± 70 | 752 ± 85 * | 1052 ± 56 | 2678 ± 163 | 794 ± 72 | 853 ± 69 * | 1047 ± 82 | 2694 ± 148 |
| Fat (energy %) | 34 ± 1 | 27 ± 2 | 48 ± 2 | 30 ± 2 | 32 ± 1 | 38 ± 2 | ||
| Carbohydrate (energy %) | 43 ± 2 | 54 ± 3 | 47 ± 1 | 51 ± 4 | 46 ± 2 | 48 ± 1 | ||
| Protein (energy %) | 23 ± 1 | 19 ± 2 | 15 ± 0 | 19 ± 1 | 22 ± 1 | 14 ± 0 | ||
Mean (±SEM) ad libitum energy intake (kcal) at and macronutrient composition (energy percentage) of breakfast, lunch, and dinner, following drink ingestion containing flavoured water (control, ~2 kcal) or whey protein (30 g/120 kcal or 70 g/280 kcal) in young (left; n = 15) and older (right; n = 15) men. Age and protein load main effects and interaction effects were determined by using repeated-measures ANOVA. * Energy intake was suppressed by protein compared to control (protein load main effect P = 0.012). Suppression of energy intake by 70 g protein compared to control (P = 0.007) occurred particularly during lunch (P = 0.001).