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Table 4 Effect on mediators, effect of mediators on mcpm, mediated effect and moderated mediation of gender

From: Exploring mediators of accelerometer assessed physical activity in young adolescents in the HEalth In Adolescents study – a group randomized controlled trial

Mediators

Gender

Intervention effect

p

Intervention effect

p

Mediated effect

p

Moderated mediation

p

  

on mediator

 

on mcpm

 

ab (95% CI)

   
  

a (95% CI)

 

b (95% CI)

   

Δab (95% CI)

 

Enjoyment

Girls

- 0.12 (-0.32; 0.07)

.19

24.40 (-4.73; 53.54)

.10

- 3.03 (-8.62; 2.56)

.29

- 3.81 (-10.58; 2.96)

.27

 

Boys

0.02 (-0.20; 0.24)

.85

37.06 (1.18; 72.93)

.04

0.78 (-7.24; 8.80)

.85

  

Self-efficacy

Girls

- 0.13 (-0.32; 0.06)

.18

64.37 (33.84; 94.89)

<.000

- 8.17 (-20.38; 4.04)

.19

- 5.06 (-15.28; 5.16)

.33

 

Boys

- 0.14 (-0.36; 0.07)

.19

21.76 (-14.13; 57.64)

.23

- 3.11 (-10.00; 3.80)

.38

  

Social support friends

Girls

- 0.02 (-0.16; 0.21)

.81

20.51 (-5.14; 46.15)

.12

0.46 (-3.33; 4.25)

.81

2.47 (-7.93; 12.86)

.64

 

Boys

- 0.03(-0.28; 0.21)

.80

61.71 (30.24; 93.17)

<.000

- 2.01 (-17.09; 13.08)

.79

  

Social support parents

Girls

0.01 (-0.16; 0.17)

.91

- 2.99 (-38.40; 32.41)

.88

- 0.03 (-0.59; 0.54)

.99

1.10 (-4.77; 6.97)

.71

 

Boys

- 0.03 (-0.26; 0.21)

.80

27.21 (-14.14; 68.56)

.20

- 1.13 (-9.96; 7.70)

.80

  

Social support teachers

Girls

0.18 (0.05; 0.31)

.01

- 8.48 (-48.86; 31.91)

.69

- 1.53 (8.90; 5.83)

.68

- 2.10 (-8.03; 3.83)

.49

 

Boys

0.06 (-0.11; 0.22)

.50

9.90 (-40.89; 60.69)

.70

0.56 (-2.72; 3.85)

.74

  

Environmental opportunities

Girls

0.10 (-0.08; 0.28)

.25

31.41 (3.76; 59.06)

.03

3.23 (-2.91; 9.37)

.74

3.84 (-1.96; 9.65)

.19

 

Boys

0.17 (-0.10; 0.43)

.21

-3.72 (-35.63; 28.19)

.82

- 0.62 (-5.97; 4.73)

.82

  
  1. Mcpm = mean count per minute.
  2. Significant results in bold.