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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