Table 1 Anthropometric characteristics of the students at 4-year follow-up post-intervention in the intervention and control groups

57.87

(56.10 to 59.65)

52.44

(50.94 to 53.93)

55.17

(53.99 to 56.35)

55.24

(52.12 to 58.36)

54.44

(52.22 to 56.67)

54.89

(52.99 to 56.79)

0.178

0.169

0.819

167.6

(166.4 to 168.8)

160.9

(159.9 to 161.9)

164.3

(163.4 to 165.1)

167.7

(165.6 to 169.9)

161.5

(160.1 to 163.0)

164.4

(163.0 to 165.8)

0.944

0.496

0.911

20.50

(20.05 to 20.95)

20.31

(19.86 to 20.76)

20.41

(20.09 to 20.72)

19.44

(18.59 to 20.30)

20.60

(19.90 to 21.30)

20.09

(19.54 to 20.64)

0.020

0.475

0.294

−0.10

(−0.27 to 0.08)

−0.21

(−0.36 to −0.06)

−0.15

(−0.27 to −0.04)

−0.37

(−0.66 to −0.09)

−0.01

(−0.23 to 0.21)

−0.17

(−0.35 to 0.00)

0.100

0.139

0.846

8.24

(7.55 to 8.93)

13.02

(12.12 to 13.92)

10.58

(9.96 to 11.19)

7.92

(6.48 to 9.35)

15.47

(13.66 to 17.28)

12.11

(10.79 to 13.44)

0.653

0.008

0.018

49.65

(48.35 to 50.96)

39.82

(39.09 to 40.56)

44.78

(43.88 to 45.66)

47.87

(45.57 to 50.17)

40.97

(39.87 to 42.07)

44.20

(42.75 to 45.66)

0.217

0.111

0.538

74.15

(72.88 to 75.43)

69.88

(68.73 to 71.02)

72.06

(71.17 to 72.94)

71.57

(69.36 to 73.78)

71.15

(68.98 to 73.31)

71.33

(69.80 to 72.87)

0.043

0.261

0.401

84.01

(82.65 to 85.37)

82.92

(81.72 to 84.12)

83.46

(82.56 to 84.37)

81.76

(79.12 to 84.41)

85.09

(83.12 to 87.07)

83.66

(82.04 to 85.27)

0.162

0.082

0.848