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Table 2 Associations from cross-sectional analysesa

From: Cross-sectional and prospective associations between sleep, screen time, active school travel, sports/exercise participation and physical activity in children and adolescents

 

9-y-olds

15-y-olds

MVPA (b (95% CI))

p

n

MVPA (b (95% CI))

p

n

Sleep

0.3 (−1.5, 2.2)

0.740

2053

1.3 (− 1.0, 3.6)

0.274

1120

Screen time

−2.2 (−3.1, −1.3)

< 0.001

2033

−1.7 (−2.7, −0.8)

< 0.001

1162

Active transport

  ≤ 5 min/d

ref.

 

900

ref.

 

619

 6–15 min/d

3.6 (0.9, 6.3)

0.009

742

3.3 (0.4, 6.2)

0.027

440

 ≥ 16 min/d

7.2 (4.0, 10.4) ♀♂

< 0.001

424

9.0 (3.8, 14.1)

0.001

137

 Girls

≤5 min/d

ref.

     

6–15 min/d

4.6 (1.5, 7.8)

0.004

    

≥ 16 min/d

10.5 (6.8, 14.3)

< 0.001

    

 Boys

≤5 min/d

ref.

     

6–15 min/d

2.4 (−1.7, 6.6)

0.253

    

≥ 16 min/d

5.0 (0.4, 9.7)

0.033

    

Sports/exercise

 ≤ 2 h/week

ref.

 

736

ref.

 

350

 3–7 h/week

2.2 (−0.1, 4.5)

0.062

1098

7.6 (4.3, 10.8)

< 0.001

555

  ≥ 8 h/week

9.2 (4.7, 13.7) ♀♂

< 0.001

225

17.9 (14.0, 21.8)

< 0.001

279

 Girls

≤2 h/week

ref.

     

3–7 h/week

1.1 (−2.2, 4.4)

0.508

    

≥ 8 h/week

1.3 (−3.9, 6.5)

0.635

    

 Boys

≤2 h/week

ref.

     

3–7 h/week

4.5 (0.9, 8.2)

0.014

    

≥ 8 h/week

14.7 (8.2, 21.3)

< 0.001

    
  1. aAdjusted for accelerometer wear time, sex, BMI, SES and daylightMVPA, moderate-to-vigorous physical activity
  2. b (95% CI), beta coefficient (95% confidence interval); min/d, minutes per day; hrs/week, hours per week; ♀♂, association modified by sex (p ≤ 0.036); ref., reference group
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BMC Public Health

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