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Table 3 Mean values of somatic characteristic – measurement after resumed the PA (G2)

From: Changes in the body composition of boys aged 11–18 years due to COVID-19 measures in the Czech Republic

Parameters

Age (years)

11

12

13

14

15

16

17

18

M ± SD

M ± SD

M ± SD

M ± SD

M ± SD

M ± SD

M ± SD

M ± SD

BH (cm)

149.9 ± 6.4

155.7 ± 8.0

163.9 ± 8.8

172.4 ± 8.8

177.7 ± 6.0

178.0 ± 6.1

179.1 ± 7.3

180.1 ± 6.3

BM (kg)

44.3 ± 9.2

45.4 ± 10.5

55.7 ± 12.1

62.7 ± 13.6

65.8 ± 9.0

70.3 ± 10.1

74.2 ± 13.1

75.0 ± 12.4

BMI (kg/m2)

19.6 ± 3.4

18.6 ± 3.6

20.6 ± 3.3

21.0 ± 3.7

20.8 ± 2.6

22.2 ± 3.1

23.1 ± 3.3

23.1 ± 3.8

BF (kg)

10.9 ± 6.7

8.6 ± 6.0

10.5 ± 7.5

9.9 ± 7.1

8.7 ± 5.0

11.1 ± 6.3

12.4 ± 7.1±

13.2 ± 8.2

BF (%)

23.1 ± 9.6

17.7 ± 7.9

17.9 ± 8.9

14.8 ± 7.6

12.8 ± 5.6

15.3 ± 6.6

16.0 ± 6.3

16.8 ± 7.4

VFA (cm2)

59.5 ± 35.0

42.2 ± 29.9

47.5 ± 35.8

43.6 ± 34.1

38.2 ± 24.4

47.4 ± 28.9

53.4 ± 30.4

56.4 ± 36.6

FFM (kg)

33.4 ± 4.7

36.8 ± 6.6

45.2 ± 8.1

52.9 ± 9.3

57.1 ± 6.2

59.1 ± 7.0

61.8 ± 8.3

61.8 ± 7.5

SMM (kg)

16.8 ± 3.1

19.1 ± 4.2

24.3 ± 4.9

29.0 ± 5.6

31.5 ± 3.7

32.6 ± 4.3

34.2 ± 5.1

34.5 ± 4.5

SMM (%)

38.6 ± 5.1

42.3 ± 4.5

43.9 ± 5.3

46.7 ± 4.4

48.0 ± 3.3

46.6 ± 3.7

46.4 ± 3.5

46.4 ± 4.3

  1. BH body height, BM body mass, BMI body mass index, BF body fat, VFA visceral fat area, FFM fat free mass, SMM skeletal muscle mass, M mean, SD standard deviation