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Table 4 Correlates of daily physical activity and sedentary time (adjusted means and 95% confidence intervals)

From: Levels and patterns of objectively-measured physical activity volume and intensity distribution in UK adolescents: the ROOTS study

 

PAEE (kJ/kg/d)2

p-value

Light PA (min/d)

p-value

Moderate PA (min/d)

p-value

Vigorous PA (min/d)

p-value

Sedentary time (min/d)

p-value

Boys

          

  Ref: Weekday

90.5 (87.1 to 93.9)

 

575.3 (559.8 to 590.8)

 

52.7 (46.7 to 59.6)

 

5.0 (3.9 to 6.3)

 

308.2 (294.1 to 322.2)

 

  Saturday

77.8 (73.3 to 82.4)

<0.001

484.2 (466.1 to 502.4)

<0.001

31.6 (26.7 to 37.3)

<0.001

2.7 (1.9 to 3.6)

<0.001

372.4 (354.3 to 390.5)

<0.001

  Sunday

74.2 (69.7 to 78.6)

<0.001

468.2 (450.2 to 486.2)

<0.001

21.4 (18.1 to 25.2)1

<0.001

2.4 (1.7 to 3.2)

<0.001

375.0 (357.2 to 392.8)

<0.001

Girls

          

  Ref: Weekday

69.1 (65.9 to 72.2)

 

533.0 (517.0 to 549.0)

 

28.0 (24.1 to 32.5)

 

0.9 (0.7 to 1.1)

 

384.5 (369.6 to 399.4)

 

  Saturday

70.3 (66.4 to 74.2)

0.517

510.3 (491.6 to 529.0)

0.005

16.0 (13.1 to 19.4)

<0.001

0.8 (0.6 to 1.0)

0.329

362.2 (343.7 to 380.7)

0.014

  Sunday

55.4 (51.6 to 59.3)1

<0.001

444.4 (425.7 to 463.2)1

<0.001

9.2 (7.5 to 11.2)1

<0.001

0.5 (0.4 to 0.7)2

<0.001

403.5 (385.0 to 422.0)1

0.036

School term

          

  Ref: Summer

76.0 (72.4 to 79.6)

 

526.2 (508.6 to 543.8)

 

29.2 (25.5 to 33.5)

 

1.5 (1.2 to 1.9)

 

353.8 (339.2 to 368.3)

 

  Autumn

72.7 (67.3 to 78.0)

0.310

520.5 (494.0 to 547.0)

0.726

21.3 (17.4 to 26.2)

0.012

1.7 (1.2 to 2.4)

0.619

363.2 (341.5 to 384.9)

0.481

  Spring

70.7 (66.0 to 75.3)

0.068

490.5 (467.9 to 513.2)

0.012

23.1 (19.3 to 27.7)

0.042

1.3 (1.0 to 1.7)

0.326

385.0 (365.8 to 404.2)

0.010

Area-level SES

          

  Ref: Low

73.0 (68.2 to 77.7)

 

499.7 (477.0 to 522.3)

 

23.1 (18.8 to 28.4)

 

1.4 (1.0 to 2.0)

 

377.5 (355.3 to 399.7)

 

  Middle

73.9 (69.9 to 77.9)

0.740

530.1 (511.1 to 549.2)

0.022

27.2 (23.0 to 32.3)

0.208

1.5 (1.1 to 1.9)

0.873

349.0 (330.7 to 367.3)

0.042

  High

73.9 (71.0 to 76.8)

0.716

513.6 (499.5 to 527.6)

0.238

25.4 (22.6 to 28.5)

0.412

1.5 (1.3 to 1.9)

0.623

367.0 (354.7 to 379.2)

0.393

Body fat status3

          

  Ref: Normal

73.9 (71.3 to 76.4)

 

515.3 (502.7 to 527.9)

 

25.5 (23.1 to 28.1)

 

1.6 (1.3 to 1.8)

 

364.0 (353.7 to 374.4)

 

  Overfat

72.2 (66.5 to 77.8)

0.539

512.6 (488.3 to 536.9)

0.816

24.4 (18.9 to 31.5)

0.734

1.0 (0.7 to 1.5)

0.022

370.8 (345.4 to 396.3)

0.596

  1. Statistical comparisons were made by multilevel modelling accounting for repeated-measures and within-school clustering. All factors mutually adjusted for one another and age. PAEE, Physical activity energy expenditure. Moderate and vigorous physical activity were transformed using natural log as these variables were skewed before analysis; presented values have been exponentiated back to the original scale. 1Significantly different to Saturday, p < 0.001; 2Significantly different to Saturday, p = 0.015; 3Normal: <85th percentile of age- and gender-specific fat mass index, Overfat: ≥85th percentile of age- and gender-specific fat mass index.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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