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Table 3 Description of physical activity variables as collected with Actigraph accelerometers in the SPEEDY study.

From: Physical activity and dietary behaviour in a population-based sample of British 10-year old children: the SPEEDY study (Sport, Physical activity and Eating behaviour: Environmental Determinants in Young people)

  Boys (N = 822) Girls (N = 1046) Total (N = 1868)
Counts per minute    
   - Weekday 682.6 (176.9) 592.9 (163.5)* 632.4 (175.3)
   - Weekend day 754.8 (346.9)# 690.7 (343.9)*,# 719.6 (346.7)#
   - Total week 716.5 (220.2) 635.6 (210.6)* 671.2 (218.6)
Minutes of MVPA    
   - Weekday 83.5 (23.4) 65.5 (19.5)* 73.5 (23.1)
   - Weekend day 85.1 (38.5) 67.2 (30.2)* 75.3 (35.3)
   - Total week 84.1 (25.9) 66.1 (20.8)* 74.1 (24.9)
  1. Differences between boys and girls tested with independent t-tests, differences between week and weekend day activity with paired samples t-tests.
  2. *: difference between boys and girls at P < 0.001.
  3. #: difference between weekday and weekend day activity within group at p < 0.001