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Table 2 Mean valid wear days and mean daily minutes of MVPA and SED by gender and weight status, Mean ± SD

From: Concurrent validity of the Fitbit for assessing sedentary behavior and moderate-to-vigorous physical activity

  Total
(N = 65)
Male
(N = 18)
Female
(N = 47)
P-value Normal
(N = 30)
Overweight/Obese
(N = 35)
P -value
Valid Wear Days 5.8 ± 1.2 5.7 ± 1.2 5.9 ± 1.3 0.61 6.1 ± 1.3 5.7 ± 1.15 0.20
SEDa (min/day)        
 Fitbit 637.8 ± 89.7 633.2 ± 85.5 639.5 ± 92.2 0.90 636.0 ± 79.0 634.8 ± 102.5 0.95
 GT3X+ (Freedson/Troiano) 600.4 ± 92.4 623.1 ± 91.1 591.7 ± 92.4 0.22 595.5 ± 86.1 603.0 ± 97.2 0.73
MVPAb (min/day)        
 Fitbit 107.8 ± 32.1 112.6 ± 36.0 105.9 ± 30.7 0.44 105.9 ± 29.8 109.4 ± 34.3 0.66
 GT3X+ (Freedson) 30.1 ± 18.5 29.3 ± 19.6 30.4 ± 18.2 0.91 31.2 ± 19.3 29.2 ± 17.9 0.66
 GT3X+ (Troiano) 28.7 ± 18.1 27.9 ± 19.2 28.9 ± 17.8 0.91 29.9 ± 19.2 27.6 ± 17.3 0.62
 GT3X+ (VM3)§ 48.1 ± 24.2 45.5 ± 24.1 49.1 ± 24.4 0.69 46.2 ± 21.4 49.8 ± 26.5 0.54
  1. §VM3: sedentary behavior estimates were not available from the VM3 cut-points
  2. aSED: sedentary behavior; bMVPA: moderate-to-vigorous physical activity