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Table 1 Baseline characteristics of the sample

From: Effect of major school playground reconstruction on physical activity and sedentary behaviour: Camden active spaces

Variable Control (n = 62) Intervention (n = 169) p-value
Age distribution (%)
  < 9 yrs 30 (48.4) 95 (56.2) 0.29
 9–10 yrs 32 (51.6) 74 (43.7)  
Sex (%)
 Female 33 (53.2) 79 (46.7) 0.38
 Male 29 (46.8) 90 (53.2)  
Ethnicity (%)
 Caucasian 20 (32.2) 60 (35.5) 0.03
 Mixed 5 (8.1) 24 (14.2)  
 Asian 15 (24.2) 23 (13.6)  
 Black 16 (25.8) 26 (15.4)  
 Other 6 (9.7) 36 (21.3)  
Body mass index (kg/m2) 17.3 ± 2.9 17.5 ± 3.4 0.63
Body fat (%) 22.6 ± 7.0 21.5 ± 7.4 0.30
Hand grip (kg) 13.4 ± 3.8 13.0 ± 4.7 0.52
Sit and reach (cm) 23.2 ± 5.8 23.2 ± 16.9 0.98
Horizontal jump (cm) 110.4 ± 18.5 106.8 ± 20.7 0.23
Peak flow (l/min)a 204.9 ± 41.9 154.0 ± 55.7 0.001
Actigraph wear time (min/d) 715.2 ± 85.9 755.9 ± 83.9 0.001
Valid wear days 4.3 ± 1.5 4.7 ± 1.7 0.14
Total MVPA (min/d) 24.8 ± 12.3 30.1 ± 17.5 0.03
Total light activity (min/d) 337.6 ± 70.9 392.2 ± 56.9 0.001
Total sedentary (min/d) 352.7 ± 55.9 333.6 ± 75.4 0.07
School time MVPA (min/d) 14.1 ± 7.6 13.6 ± 7.5 0.69
School light activity (min/d) 158.7 ± 29.5 178.1 ± 31.1 0.001
School time sedentary (min/d) 187.2 ± 32.3 168.3 ± 32.2 0.001
  1. Data presented as mean ± SD unless stated
  2. MVPA Moderate to vigorous physical activity
  3. aage and height adjusted