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Table 3 Patterns of Sedentary Time During an Average Weekend Day by Developmental Stage

From: Developmental disparities in sedentary time by period of the day among US youth: a cross-sectional study

 

N

Childhood (C)

Adolescence (A)

C vs A Differences

Weekend Day

(Mean ± SD)

 ST During Morning (min/hr)

C: 1185, A: 1140

30.4 ± 13.1

37.5 ± 13.2

7.1*

 ST During Afternoon (min/hr)

C: 1399, A: 1565

22.6 ± 8.6

31.8 ± 9.0

9.2*

 ST during Evening (min/hr)

C: 1393, A: 1544

24.8 ± 10.0

33.4 ± 9.8

8.5*

 

C vs A Differences (min/hr)

Daily Differences (min/day)

Weekly Differences (min/week)

Monthly Differences (hr/month)

Extrapolated Differences in ST

 ST During Morning

7.1*

35.5

71.0

4.7

 ST During Afternoon

9.2*

57.6

115.2

7.7

 ST during Evening

8.5*

34.0

68.0

4.5

  1. ST Sedentary time, SD Standard deviation, ST During Morning = 7 AM – 11:59 AM, ST During Afternoon = 12 PM – 5:59 PM, ST During Evening Weekend Day = 6 PM – 10 PM, *p < 0.001. To extrapolate differences in ST, the children vs adolescents difference was multiplied by the length of the period in a given day (morning: 5 h, afternoon: 6 h and evening: 4 h) to obtain the daily difference. Then, the daily difference was multiplied by 2-days since the weekend was defined as the days in which youth did not attended school (Saturday and Sunday) to obtain the weekly difference. Next, the weekly difference was multiplied by four assuming that a given month has 4-weeks to obtain the monthly difference
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BMC Public Health

ISSN: 1471-2458

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