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Table 1 Subject characteristics of 11–12 and 14–15 year old boys and girls

From: Physical activity and sedentary behavior among adolescents in rural South Africa: levels, patterns and correlates

 

11-12 years

14-15 years

 

Boys (n = 98)

Girls (n = 97)

Boys (n = 91)

Girls (n = 95)

Age (yrs)

12.1 ± 0.6

12.1 ± 0.6

15.1 ± 0.7

15.1 ± 0.6

Weight (kg)

35.8 ± 6.8c

40.7 ± 10.6c

50.7 ± 10.0A

55.2 ± 11.2A

Height (cm)

145.0 ± 7.1c

148.8 ± 7.9c

163.1 ± 8.7B

159.8 ± 5.5B

BMI (kg/m2)

16.9 ± 2.0b

18.2 ± 3.7b

18.9 ± 2.4C

21.6 ± 4.1C

Pubertal stage (n,%)

    

 Tanner 1

42 (43%)b

20 (21%)b

10 (11%)B

1 (1%)B

 Tanner 2

33 (34%)

45 (47%)

11 (12%)

5 (5%)

 Tanner 3

19 (19%)

29 (30%)

34 (38%)

40 (43%)

 Tanner 4

4 (4%)

3 (3%)

32 (36%)

41 (44%)

 Tanner 5

0 (0%)

0 (0%)

2 (2%)

7 (7%)

  1. All values are means ± standard deviation. Comparisons between sex and age groups were completed using ANOVA when data was normally distributed and Mann–Whitney U-test for non-normally distributed data. aP < 0.05, bP < 0.01 and cp < 0.001 for boys vs. girls in the 11-12-year age group; AP < 0.05, BP < 0.01 and Cp < 0.001 for boys vs. girls in the 14-15-year age group.
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BMC Public Health

ISSN: 1471-2458

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