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Table 5 Relationship between after-school physical activity and body composition variables a

From: Sizing the association between lifestyle behaviours and fatness in a large, heterogeneous sample of youth of multiple ethnicities from 4 countries

  

New Zealand

Fiji

Tonga

Australia

All

 

Days

Pacific (N = 830)

Maori (N = 370)

Asian (N = 138)

European (N = 239)

All New Zealand (N = 1577)

Indigenous Fijian (N = 600)

Fijian Indian (N = 791)

All Fiji (N = 1391)

Tongan (N = 1019)

Australian (N = 1673)

All (N = 5660)d

Mean BMIb

4-5

24.45 (0.20)

23.95 (0.21)

20.29 (0.43)

21.34 (0.33)

23.47 (0.15)

21.47 (0.11)

18.83 (0.15)

19.98 (0.10)

22.17 (0.14)

20.66 (0.10)

21.54 (0.06)

Increment in BMIc

2-3

0.89 (0.18)

-0.24 (0.23)

0.13 (0.37)

0.41 (0.41)

0.50 (0.18)*

0.03 (0.16)

0.09 (0.26)

0.05 (0.14)

0.16 (0.16)

0.16 (0.14)

0.23 (0.08)

0-1

1.58 (0.15)

0.63 (0.39)

0.22 (0.42)

0.33 (0.20)

0.97 (0.23)

0.57 (0.25)*

-0.02 (0.21)

0.21 (0.18)

0.49 (0.17)

-0.01 (0.09)

0.46 (0.12)

Mean BMIzb

4-5

1.24 (0.04)

1.08 (0.04)

0.03 (0.14)

0.29 (0.04)

0.95 (0.03)

0.36 (0.04)

-0.69 (0.05)

-0.23 (0.04)

0.67 (0.04)

0.29 (0.03)

0.41 (0.02)

Increment in BMIzc

2-3

0.16 (0.04)

-0.06 (0.08)

-0.05 (0.12)

0.12 (0.14)

0.09 (0.04)

-0.01 (0.06)

0.03 (0.10)

0.01 (0.06)

0.01 (0.05)

0.03 (0.04)

0.04 (0.02)

0-1

0.30 (0.04)

0.08 (0.08)

-0.02 (0.13)

0.08 (0.08)

0.17 (0.05)*

0.13 (0.07)

-0.02 (0.07)

0.04 (0.06)

0.11 (0.05)*

-0.03 (0.03)

0.08 (0.03)

Mean %BFb

4-5

29.06 (0.32)

29.67 (0.52)

20.63 (1.50)

23.09 (1.11)

27.62 (0.28)

19.60 (0.39)

22.06 (0.36)

21.04 (0.30)

21.36 (0.64)

25.55 (0.43)

24.15 (0.19)

Increment in %BFc

2-3

1.16 (0.42)

-0.27 (0.50)

0.93 (1.50)

3.03 (0.94)

0.99 (0.31)*

0.77 (0.47)

0.38 (0.79)

0.50 (0.45)

0.89 (0.46)

0.81 (0.43)

0.92 (0.21)

0-1

3.88 (0.56)

0.02 (1.03)

1.72 (0.82)*

1.61 (0.50)

2.12 (0.63)*

2.06 (0.60)

0.25 (0.58)

0.94 (0.41)*

2.39 (0.50)

1.32 (0.47)

1.96 (0.29)

Mean TFMb

4-5

21.27 (0.50)

21.44 (0.62)

11.36 (1.30)

14.36 (1.20)

19.42 (0.35)

11.68 (0.31)

10.94 (0.31)

11.30 (0.25)

13.23 (0.44)

14.59 (0.28)

14.82 (0.16)

Increment in TFMc

2-3

1.69 (0.53)

-0.45 (0.38)

0.80 (1.17)

2.64 (0.82)

1.18 (0.35)*

0.51 (0.37)

0.33 (0.55)

0.36 (0.31)

0.66 (0.37)

0.66 (0.36)

0.78 (0.18)

0-1

4.42 (0.57)

0.97 (1.31)

1.29 (0.76)

1.28 (0.63)*

2.53 (0.64)

1.62 (0.53)

0.20 (0.43)

0.71 (0.36)

1.76 (0.42)

0.76 (0.26)

1.64 (0.29)

  1. aAdjusted for age and sex. “New Zealand All”, “Fiji All” and “All countries” were further adjusted for ethnicity; bStandard error in parentheses; cCompared to “4-5 days” (reference category). Standard error in parentheses; dR2 for BMI, BMIz, %BF and TFM models = 0.317, 0.313, 0.247 and 0.230, respectively; BMI = Body mass index (kg/m2); BMIz = BMI z-score; %BF = Percent body fat (%); TFM = Total fat mass (kg); *P<0.05; P <0.01; P <0.001.