Table 1. Baseline characteristics of the subjects.
| All | F5d | F10d | F15d | F20d | |
|---|---|---|---|---|---|
| Days (d) | 5±2 | 10±2 | 15±2 | 20±2 | |
| Subjects, n (%) | 1422 (100.0) | 659 (46.3) | 530 (37.3) | 196 (13.8) | 37 (2.6) |
| Men (%) | 581 (40.9) | 278 (42.2) | 214 (40.4) | 76 (38.8) | 13 (35.1) |
| Women (%) | 841 (59.1) | 381 (57.8) | 316 (59.6) | 120 (61.2) | 24 (64.9) |
| Age, years | 55.4±0.4 | 54.2±0.5 b,c | 56.3±0.6 a | 56.4±0.9 a | 56.4±2.3 |
| Fasting length (days) | 8.2±0.1 | 5.4±0.0 b,c,d | 8.6±0.0 a,c,d | 14.1±0.1 a,b,d | 20.1±0.2 a,b,c |
| Waist, cm | 94.0±0.4 | 91.3±0.6 b,c,d | 94.8±0.7 a,c,d | 98.3±1.2 a,b,d | 106.3±2.8 a,b,c |
| Weight, kg | 82.0±0.5 | 79.3±0.8 b,c,d | 82.7±0.9 a,c,d | 86.6±1.6 a,b,d | 96.7±4.0 a,b,c |
| BMI, kg/m2 | 28.2±0.2 | 27.2±0.2 b,c,d | 28.5±0.3 a,c,d | 29.7±0.4 a,b,d | 33.6±1.1 a,b,c |
| BMI<25, n (%) | 404 (28.4) | 227 (56.2) | 133 (32.9) | 41 (10.1) | 3 (0.7) |
| 25≤BMI<30, n (%) | 497 (35.0) | 232 (46.7) | 199 (40.0) | 61 (12.3) | 5 (1.0) |
| BMI≥30, n (%) | 425 (29.9) | 155 (36.5) | 160 (37.6) | 84 (19.8) | 26 (6.1) |
| BMI men, kg/m2 | 30.0±0.2 | 29.2±0.3 | 30.3±0.3 | 31.3±0.7 | 34.0±1.5 |
| BMI<25, n (%) | 74 (12.7) | 46 (62.2) | 18 (24.3) | 10 (13.5) | 0 (0.0) |
| 25≤BMI<30, n (%) | 231 (39.8) | 117 (50.6) | 92 (39.8) | 20 (8.7) | 2 (0.9) |
| BMI≥30, n (%) | 230 (39.6) | 94 (40.9) | 87 (37.8) | 40 (17.4) | 9 (3.9) |
| BMI women, kg/m2 | 27.0±0.2 | 25.7±0.2 | 27.3±0.3 | 28.7±0.5 | 33.3±1.4 |
| BMI<25, n (%) | 330 (39.2) | 181 (54.8) | 115 (34.8) | 31 (9.4) | 3 (0.9) |
| 25≤BMI<30, n (%) | 266 (31.6) | 115 (43.2) | 107 (40.2) | 41 (15.4) | 3 (1.1) |
| BMI≥30, n (%) | 195 (23.2) | 61 (31.3) | 73 (37.4) | 44 (22.6) | 17 (8.7) |
Subjects were divided into 4 groups according to the fasting lengths: 5, 10, 15 and 20±2 days. Significant differences between the groups are indicated as
a, p<0.05 versus F5d
b, p<0.05 versus F10d
c, p<0.05 versus F15d
d, p<0.05 versus F20d. BMI, body mass index. Data are presented as mean±SEM.