Table 1 |
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Descriptive participant characteristics (Mean ± SD) for Dutch adolescent boys and girls separately. |
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T0 |
T1 |
T2 |
T3 |
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Boys |
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Age, yrs |
12.9 ± 0.5* |
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Ethnicity, % |
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Western |
84.3 |
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Non-Western |
15.7 |
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Height, cm |
159.7 ± 8.2 |
163.0 ± 8.6)* |
166.4 ± 8.7* |
170.8 ± 8.5* |
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Weight, kg |
49.0 ± 10.1 |
52.0 ± 10.6) |
55.2 ± 11.1 |
58.8 ± 10.8 |
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BMI, kg/m2 |
19.1 ± 2.9 |
19.5 ± 2.9) |
19.8 ± 3.0 |
20.0 ± 2.7* |
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Weight status, % |
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Healthy weight |
78.9 |
81.7 |
80.1 |
84.0 |
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Overweight (obese) |
19.4 ± 1.7 |
16.6 ± 1.) |
16.7 ± 3.0 |
14.4 ± 1.7) |
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WC, cm |
68.1 ± 7.6 |
69.0 ± 7.2 |
69.7 ± 7.5 |
72.8 ± 8.1)* |
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HC, cm |
82.3 ± 7.4* |
84.2 ± 7.6* |
87.0 ± 7.5* |
86.1 ± 7.0)* |
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Skinfold thickness, mm |
41.6 ± 20.7* |
41.2 ± 21.8* |
40.5 ± 21.9* |
43.7 ± 22.0)* |
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Shuttle run, laps |
8.6 ± 2.1* |
9.0 ± 2.2* |
9.3 ± 2.3* |
9.4 ± 2.4)* |
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TV viewing, min/day |
174.9 ± 97.6 |
141.6 ± 85.9 |
141.5 ± 76.8 |
148.4 ± 83.1)* |
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Computer use, min/day |
132.6 ± 85.1* |
124.7 ± 88.2 |
132.7 ± 81.3 |
132.4 ± 89.0) |
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Girls |
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Age, yrs |
12.7 ± 0.5) |
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Ethnicity, % |
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Western |
89 |
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Non-Western |
11 |
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Height, cm |
158.8 ± 6.7 |
161.4 ± 6.4 |
163.3 ± 6.1 |
165.1 ± 5.9 |
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Weight, kg |
49.4 ± 10.7 |
52.3 ± 11.0 |
54.2 ± 10.6 |
57.0 ± 10.8 |
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BMI, kg/m2 |
19.5 ± 3.4 |
20.0 ± 3.5 |
20.3 ± 3.4 |
20.9 ± 3.6 |
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Weight status, % |
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Healthy weight |
78.2 |
81.6 |
80.1 |
79.8 |
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Overweight (obese) |
17.5 (4.3) |
15.5 (2.9) |
16.8 (3.1) |
16.2 (4.0) |
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WC, cm |
67.2 ± 8.0 |
68.9 ± 8.1 |
68.7 ± 8.0 |
70.4 ± 8.4 |
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HC, cm |
85.3 ± 8.4 |
87.9 ± 9.0 |
89.8 ± 8.8 |
91.4 ± 8.3 |
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Skinfold thickness, mm |
55.1 ± 27.1 |
56.0 ± 26.8 |
54.6 ± 22.4 |
68.7 ± 28.7 |
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Shuttle run, laps |
7.2 ± 1.9 |
7.5 ± 1.8 |
7.6 ± 1.9 |
7.6 ± 2.0 |
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TV viewing, min/day |
156.4 ± 95.3 |
134.8 ± 89.8 |
133.6 ± 73.9 |
123.5 ± 69.0 |
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Computer use, min/day |
103.8 ± 78.3 |
119.7 ± 95.4 |
128.4 ± 88.6 |
126.0 ± 82.1 |
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* = significantly different between boys and girls. P < 0.002 T0 = Baseline; T1 = 8 months after baseline; T2 = 12 months after baseline; T3 = 20 months after baseline; BMI = body mass index; WC = waist circumference; HC = hip circumference. |
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Altenburg et al. International Journal of Behavioral Nutrition and Physical Activity 2012 9:4 doi:10.1186/1479-5868-9-4 |
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