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Table 4 Differences in the mean values of somatic parameters of boys measured after resumed the PA and before restricted the PA (G2 versus G1) – statistical analysis results

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

Diff

Diff

Diff

Diff

Diff

Diff

Diff

Diff

BH (cm)

+ 0.8

+ 0.8

−1.6

−0.3

0

−0.7

−0.7

−0.4

BM (kg)

+ 2.3

+ 0.7

+ 2.1

+ 1.6

−0.2

+ 0.2

+ 1.3

−0.1

BMI (kg/m2)

+ 0.8

+ 0.1

+ 1.2*+

+ 0.6

− 0.1

+ 0.2

+ 0.6

+ 0.1

BF (kg)

+ 1.3

+ 0.7

+ 3.3**++

+ 3.8***++

+ 2.0**++

+ 1.7*+

+ 2.3**+

+ 3.1**+

BF (%)

+ 1.8

+ 1.2

+ 4.8***++

+ 5.1***+++

+ 2.8***++

+ 2.5**+

+ 2.7***+

+ 3.7***++

VFA (cm2)

+ 5.3

+ 5.4

+ 16.8**++

+ 20.5***+++

+ 12.3***++

+ 8.5*+

+ 11.2**+

+ 15.2***++

FFM (kg)

+ 1.0

0

−1.1

−2.1

−2.2*+

−1.6

− 1.0

−3.2**+

SMM (kg)

−0.4

+ 0.7

−1.2

− 1.8*+

− 1.9**+

−1.7**+

− 1.4*+

−2.5***++

SMM (%)

−3.0***++

−2.6***++

−3.8***+++

− 3.8***+++

− 2.7***+++

− 2.6***++

−2.7***++

−3.0***+++

  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, Diff difference
  2. *p < 0.05
  3. **p < 0.001
  4. ***p < 0.0001
  5. +d < 0.5
  6. ++d ≥ 0.5
  7. +++d ≥ 0.8