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Table 4 Follow-up adjusted for baseline covariates and mean difference (intervention-control)

From: The effect of dance mat exergaming systems on physical activity and health – related outcomes in secondary schools: results from a natural experiment

  Intervention Control Mean difference (intervention minus control) (95% CI) p value Effect size (95% CI)
Sedentary time (min.d-1) 503.9 ± 64.2 507.2 ± 63.4 -3.3 (-35.3 to 28.6) 0.83 -0.05 (-0.53 to 0.43)
Sedentary time (% of wear time) 66.5 ± 5.2 63.1 ± 5.2 3.3 (0.7 to 5.9) 0.01* 0.54 (0.05 to 1.03)
Light physical activity (min.d-1) 205.6 ± 36.0 234.3 ± 36.4 -28.7 (-46.5 to -10.8) 0.02* -0.68 (-1.17 to -0.18)
Light physical activity (% of wear time) 27.0 ± 4.4 29.3 ± 4.3 -2.3 (-4.5 to 0.2) 0.03* -0.46 (-0.94 to 0.03)
MVPA (min.d-1) 52.2 ± 16.4 58.2 ± 16.0 -5.6 (-13.6 to 2.3) 0.16 -0.26 (-0.74 to 0.22)
MVPA (% of wear time) 6.7 ± 2.1 7.4 ± 2.1 -0.6 (-1.6 to 0.4) 0.21 -0.03 (-0.51 to 0.45)
VA total activity (counts min-1) 442.1 ± 123.3 507.5 ± 122.9 -65.4 (-126.0 to -4.7) 0.03* -0.37 (-0.85 to 0.12)
VM total activity (counts min-1) 892.5 ± 187.2 993.0 ± 230.7 -100.5 (-193.3 to -7.6) 0.03* -0.39 (-0.89 to 0.09)
Weight (kg) 52.0 ± 4.3 53.7 ± 4.3 -1.7 (-2.9 to -0.4) 0.01* -0.14 (-0.43 to 0.16)
Body mass index (kg.m -2) 21.1 ± 1.5 21.9 ± 1.5 - 0.9 (-1.3 to -0.4) 0.0001* -0.21 (-0.51 to 0.082)
Percentage body fat 22.8 ± 6.7 25.0 ± 6.7 -2.2 (-4.2 to -0.2) 0.03* -0.20 (-0.49 to 0.09)
Self-efficacy for physical activity 23.1 ± 5.2 22.2 ± 5.2 0.9 (-0.3 to 2.2) 0.13 0.17 (-0.06 to 0.41)
Physical well-being 48.4 ± 8.2 46.5 ± 8.2 1.9 (0.2 to 4.8) 0.06 0.23 (-0.02 to 0.47)
Psychological well-being 50.8 ± 9.7 48.3 ± 9.7 2.5 (0.1 to 4.8) 0.03* 0.25 (0.01 to 0.48)
Autonomy and parent relation 55.5 ± 11.4 51.3 ± 11.4 4.2 (1.4 to 7.0) 0.003* 0.34 (0.10 to 0.59)
Peers and social support 52.6 ± 10.3 51.7 ± 10.3 0.9 (-1.5 to 3.3) 0.45 0.08 (-0.15 to 0.31)
School environment 50.2 ± 9.9 48.2 ± 9.9 2.0 (-0.2 to 4.3) 0.09 0.19 (-0.04 to 0.42)
20 m shuttle run test (km.h-1) 10.2 ± 0.7 10.2 ± 0.7 0.0 (-0.2 to 0.1) 0.72 -0.03 (-0.29 to 0.23)
Number of shuttles completed 31.8 ± 11.6 32.6 ± 11.6 -0.8 (-3.8 to 2.3) 0.61 -0.04 (-0.30 to 0.21)
School attendance (%) 94.6 ± 6.2 94.2 ± 6.2 0.3 (-0.8 to 1.4) 0.57 0.05 (-0.14 to 0.24)
  1. *Significantly different between groups. MVPA – moderate to vigorous physical activity; VA - vertical axis; VM - vertical magnitude.