Table 2 Patterns of sedentary time during an average weekday by developmental stage

N

Childhood (C)

Adolescence (A)

C vs A Differences

Weekday

(Mean ± SD)

 ST Before School (min/hr)

C: 942, A: 1115

34.5 ± 13.8

37.1 ± 13.0

2.6

 ST During School (min/hr)

C: 1405, A: 1566

28.2 ± 7.2

36.3 ± 7.3

8.1*

 ST Afterschool (min/hr)

C: 1403, A: 1566

22.7 ± 7.0

31.1 ± 7.7

8.4*

 ST during Evening (min/hr)

C: 1404, A: 1565

24.8 ± 7.9

32.5 ± 8.2

7.7*

C vs A Differences (min/hr)

Daily Differences (min/day)

Weekly Differences (min/week)

Monthly Differences (hr/month)

Extrapolated Differences in ST

 ST Before School

2.6

5.2

26

1.7

 ST During School

8.1*

56.7

283.5

18.9

 ST Afterschool

8.4*

25.2

126.0

8.4

 ST during Evening

7.7*

23.1

115.5

7.7