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Table 3 Sex and age-group comparisons of 24-hour movement behaviour characteristics (adjusted means and 95% CI)

From: Characteristics of 24-hour movement behaviours and their associations with mental health in children and adolescents

 

All participants

Children

Adolescents

 

Boys

Girls

Boys

Girls

All

Boys

Girls

All

Time-use estimates

        

Sleep (min⋅d− 1)

450.5

(442.1, 458.8)

463.5*

(456.8, 470.3)

465.9

(455.7, 476.2)

486.4

(477.9, 494.9)

476.2*** (469.5, 482.8)

435.0

(421.7, 448.2)

440.6

(430.1, 451.2)

437.8

(429.4, 446.3)

ST (min⋅d− 1)

569.2

(532.1, 606.3)

566.1

(528.3, 603.9)

512.8

(482.4, 543.2)

514.0

(485.5, 542.4)

513.4

(486.4, 540.4)

619.5

(550.0, 688.9)

624.5

(555.8, 693.2)

622.0**

(554.1, 689.9)

LPA (min⋅d− 1)

283.6

(250.4, 316.7)

286.0

(253.2, 318.8)

305.8

(280.4, 331.1)

303.8

(279.6, 327.9)

304.8

(281.4, 328.2)

261.4

(200.0, 322.8)

268.2

(207.1, 329.2)

264.8

(204.2, 325.3)

MPA (min⋅d− 1)

60.6***

(54.7, 66.5)

48.9

(43.3, 54.6)

67.4

(62.0, 72.8)

55.5

(50.7, 60.4)

61.4*

(57.1, 65.8)

53.8

(43.12, 64.4)

42.4

(32.0, 52.8)

48.1

(37.9, 58.3)

VPA (min⋅d− 1)

10.5***

(9.1, 12.0)

6.5

(5.1, 7.9)

12.9

(11.5, 14.3)

8.8

(7.6, 10.0)

10.9**

(9.8, 11.9)

8.1

(5.6, 10.7)

4.3

(1.7, 6.8)

6.2

(3.6, 8.8)

Sleep quality

        

Sleep efficiency (%)

87

(86, 87)

88

(87, 88)

86

(85, 87)

87

(86, 88)

86

(86, 87)

88

(86, 89)

88

(97, 89)

88**

(87, 89)

Night awakenings

20.5

(19.6, 21.4)

20.0

(18.3, 21.7)

21.2

(20.3, 22.0)

21.0

(20.3, 21.8)

21.1

(20.5, 21.7)

19.9

(17.9, 21.9)

19.0

(4.7, 33.3)

19.4

(-250.0, 289.0)

Sleep onset time (decimal hours)

22.42

(22.06, 22.78)

22.37

(21.79, 22.94)

21.66

(21.35, 21.96)

21.74

(21.47, 22.01)

21.70

(21.45, 21.95)

23.2

(22.4, 24.0)

23.0

(20.5, 25.5)

23.09

(10.36, 35.82)

24-h rest-activity rhythms

        

Mesor (log mg + 1)

2.31

(2.18, 2.44)

2.31

(2.19, 2.44)

2.50

(2.40, 2.61)

2.47

(2.37, 2.57)

2.49**

(2.39, 2.58)

2.12

(1.89, 2.36)

2.16

(1.93, 2.39)

2.14

(1.91, 2.37)

Amplitude

(log mg + 1)

2.78***

(2.61, 2.95)

2.35

(2.19, 2.52)

2.83

(2.65, 3.01)

2.38

(2.23, 2.54)

2.61

(2.48, 2.74)

2.73

(2.42, 3.03)

2.33

(2.00, 2.65)

2.53

(2.17, 2.88)

Acrophase time (decimal hours)

14.55

(14.31, 14.78)

14.58

(14.35, 14.81)

14.28

(14.09, 14.48)

14.38

(14.20, 15.46)

14.33

(14.16, 14.50)

14.81

(14.38, 15.24)

14.78

(14.35, 15.21)

14.79*

(14.37, 15.22)

IS

0.54

(0.47, 0.60)

0.52

(0.46, 0.58)

0.52

(0.47, 0.57)

0.52

(0.47, 0.56)

0.52

(0.47, 0.56)

0.56

(0.44, 0.68)

0.52

(0.41, 0.64)

0.54

(0.42, 0.66)

IV

0.77

(0.70, 0.85)

0.81

(0.74, 0.89)

0.80

(0.74, 0.86)

0.82

(0.76, 0.87)

0.81

(0.75, 0.86)

0.75

(0.61, 0.89)

0.81

(0.68, 0.95)

0.78

(0.64, 0.92)

L5 (mg)

5.1

(2.4, 7.8)

5.1

(2.5, 7.8)

6.4

(4.5, 8.3)

6.4

(4.5, 8.2)

6.4

(4.5, 8.2)

3.8

(-1.3, 8.8)

3.9

(-1.1, 9.0)

3.9

(-1.2, 8.9)

M10 (mg)

85.0***

(78.6, 91.5)

71.3

(65.0, 77.6)

92.8

(86.7, 98.9)

80.6

(75.2, 86.0)

86.7*

(81.9, 91.5)

77.3

(50.4, 65.6)

62.0

(50.4, 73.5)

69.6

(58.2, 81.0)

Directly measured acceleration

        

AvAcc (mg)

44.9***

(41.1, 48.6)

39.5

(35.9, 43.1)

49.0

(45.8, 52.3)

43.9

(41.0, 46.9)

46.5*

(43.8, 49.2)

40.7

(33.9, 47.5)

35.1

(28.4, 41.7)

37.9

(31.3, 44.5)

Intensity gradient

-2.03***

(-2.08, -1.97)

-2.12

(-2.17, -2.06)

-1.96

(-2.01, -1.92)

-2.04

(-2.08, -2.00)

-2.00*

(-2.04, -1.96)

-2.09

(-2.19, -1.99)

-2.19

(-2.29, -2.09)

-2.14

(-2.24, -2.05)

  1. Note. *p < .05, **p < .01, ***p < .001
  2. Analyses adjusted for school-level clustering and SES. BMIz included as an additional covariate for analysis of LPA, MPA, VPA, AvAcc, and IG. ST = sedentary time; LPA = light physical activity; MPA = moderate physical activity; VPA = vigorous physical activity IS = inter-daily stability; IV = intra-daily variability; L5 = activity level during the least active 5 h; M10 = activity level during the most active 10 h, AvAcc = average acceleration