TABLE 1.
Control (n = 11) |
CR (n = 18) |
P-between-group difference |
||||||||||||
Baseline2 | ΔM12 | ΔM24 | ΔFU12 | ΔFU24 | Baseline2 | ΔM12 | ΔM24 | ΔFU12 | ΔFU24 | ΔM12 | ΔM24 | ΔFU12 | ΔFU24 | |
Weight, kg | 73.4 ± 7.7 | 0.03 ± 0.7 | 0.4 ± 0.8 | 0.8 ± 1.1 | 1.2 ± 1.2 | 72.4 ± 10.7 | −9.7 ± 0.5* | −9.0 ± 0.6* | −5.1 ± 0.9* | −4.1 ± 1.0* | <0.0001 | <0.0001 | <0.001 | <0.01 |
BMI, kg/m2 | 25.7 ± 1.1 | 0.03 ± 0.2 | 0.2 ± 0.2 | 0.2 ± 0.4 | 0.4 ± 0.4 | 25.7 ± 1.6 | −3.4 ± 0.2* | −3.2 ± 0.2* | −1.9 ± 0.3* | −1.6 ± 0.3* | <0.0001 | <0.0001 | <0.001 | <0.01 |
WC, cm | 82.4 ± 6.3 | 1.7 ± 1.2 | 2.4 ± 1.1 | 2.2 ± 1.4 | 2.8 ± 1.6 | 81.2 ± 9.1 | −6.2 ± 0.9 | −6.3 ± 0.9 | −3.6 ± 1.1 | −1.7 ± 1.2 | — | — | — | — |
Body fat, % | 31.5 ± 7.6 | −0.03 ± 0.5 | 0.6 ± 0.6 | −2.4 ± 0.8* | −1.7 ± 0.9 | 34.1 ± 6.0 | −6.2 ± 0.4* | −5.2 ± 0.4* | −4.9 ± 0.6* | −4.3 ± 0.7* | <0.0001 | <0.0001 | 0.02 | 0.03 |
FM, kg | 22.8 ± 4.8 | 0.1 ± 0.5 | 0.6 ± 0.5 | −1.7 ± 0.8* | −1.1 ± 0.9 | 24.5 ± 4.8 | −7.1 ± 0.4* | −6.3 ± 0.4* | −4.9 ± 0.6* | −4.2 ± 0.7* | <0.0001 | <0.0001 | <0.01 | 0.01 |
FFM, kg | 50.6 ± 10.2 | −0.2 ± 0.4 | −0.4 ± 0.4 | 2.4 ± 0.6 | 2.1 ± 0.7 | 47.9 ± 9.6 | −2.6 ± 0.3 | −2.7 ± 0.3 | −0.2 ± 0.5 | 0.1 ± 0.5 | — | — | — | — |
24hEE, kcal/d | 1902 ± 228 | −70 ± 28 | −80 ± 26 | −44 ± 36 | −39 ± 46 | 1847 ± 279 | −227 ± 21 | −194 ± 20 | −115 ± 28 | −135 ± 36 | — | — | — | — |
SleepEE, kcal/d | 1540 ± 195 | 31 ± 32 | −32 ± 29 | −58 ± 31 | −53 ± 39 | 1539 ± 227 | −177 ± 24* | −161 ± 22* | −127 ± 24* | −141 ± 30* | <0.0001 | <0.01 | NS | NS |
Estimates of least-squares means ± SEM changes from baseline are listed for all subsequent study visits. Data are from participants who completed the 24-mo follow-up study. Subjects in the CR group were randomly assigned at baseline (month 0) to receive a 25% CR intervention. *Significant within-group changes from baseline are noted when a significant treatment-by-time interaction was present, P < 0.05. CR, calorie restriction; EE, energy expenditure; FFM, fat-free mass; FM, fat mass; FU12, follow-up at 12 mo; FU24, follow-up at 24 mo; M12, month 12 of the 2-y intervention; M24, month 24 of the 2-y intervention; SleepEE, sleep energy expenditure; WC, waist circumference; 24hEE, 24-h energy expenditure.
Values are raw means ± SDs.