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Table 2 Movement behaviours of females and males at age 6-9, at age 9-11, and age 15-17 years

From: Cross-sectional and longitudinal associations between the 24-hour movement behaviours, including muscle and bone strengthening activity, with bone and lean mass from childhood to adolescence

 

Age 6 to 9 years

Age 9 to 11 years

Age 15 to 17 years

Females

Males

p value for group difference

Females

Males

p value for group difference

Females

Males

p value for group difference

Mean/Median (SD/IQR)

Mean/Median (SD/IQR)

 

Mean/Median (SD/IQR)

Mean/Median (SD/IQR)

 

Mean/Median (SD/IQR)

Mean/Median (SD/IQR)

 

MVPA (min/day)

85 (55 to 127)

126 (81 to 178)

<0.001

72 (51 to 99)

115 (79 to 162)

<0.001

32 (18 to 48)

47 (26 to 71)

0.033

MVPA guidelines

% (cases) < 60 mins/day

28.3 (52)

14.8 (27)

0.002

34.4 (54)

17.6 (23)

0.001

80.0 (32)

65.2 (43)

0.13

% (cases) ≥ 60 mins/day

71.7 (132)

85.2 (155)

 

65.6 (103)

82.4 (108)

 

20.0 (8)

34.8 (23)

 

Sport and exercise participation (min/day)

9 (0 to 17)

13 (9 to 21)

0.008

9 (0 to 26)

17 (9 to 34)

0.028

14 (0 to 40)

18 (0 to 68)

0.37

Muscle and bone strengthening guidelines

% (cases) < 3 times/week

87.8 (201)

79.4 (197)

0.019

76.5 (150)

67.9 (127)

0.068

70.9 (73)

61.3 (73)

0.16

% (cases) ≥ 3 times/week

12.2 (28)

20.6 (51)

 

23.5 (46)

32.1 (60)

 

29.1 (30)

38.7 (46)

 

Sedentary time (min/day)

242 (131)

232 (129)

0.47

393 (108)

386 (100)

0.54

598 (143)

587 (140)

0.72

Screen time (min/day)

92 (49)

113 (55)

<0.001

108 (53)

135 (59)

<0.001

308 (166)

367 (199)

0.017

Screen time guidelines

% (cases) > 2 hours/day

20.5 (47)

35.9 (89)

< 0.001

30.6 (60)

53.5 (100)

< 0.001

95.1 (98)

96.6 (114)

0.74

% (cases) ≤ 2 hours/day

79.5 (182)

64.1 (159)

 

69.4 (136)

46.5 (87)

 

4.9 (5)

3.4 (4)

 

Sleep (hour/night)

9.69 (0.46)

9.65 (0.55)

0.46

9.23 (0.55)

9.08 (0.48)

0.013

7.73 (0.75)

7.46 (0.64)

0.012

Sleep guidelines

% (cases) not meeting age-specific guidelines

9.1 (17)

11.6 (22)

0.50

31 (49)

40.5 (53)

0.108

65.4 (53)

81.3 (78)

0.025

% (cases) meeting age-specific guidelines

90.9 (169)

88.4 (168)

 

69 (109)

59.5 (78)

 

34.6 (28)

18.7 (18)

 
  1. IQR Interquartile range, MVPA Moderate to vigorous physical activity, SD Standard deviation
  2. For continuous variables, values are mean/median and standard deviation/interquartile range, and p-values from independent samples t-tests or Mann-Whitney U tests to test for the sex difference. For categorical variables, values are % (n), with Fisher’s exact p-values to test for the sex difference
  3. At age 6 to 9 years, for MVPA, n = 366 (184 females, 182 males). For sport and exercise and screen time, n = 477 (229 females, 248 males). For sedentary time, n = 365 (184 females, 181 males). For sleep, n = 376 (186 females, 190 males)
  4. At age 9 to 11 years, for MVPA, n = 288 (157 females, 131 males). For sport and exercise and screen time, n = 383 (196 females, 187 males). For sedentary time, n = 287 (157 females, 130 males). For sleep, n = 289 (158 females, 131 males)
  5. At age 15 to 17 years, for MVPA and sedentary time, n = 106 (40 females, 66 males). For sport and exercise, n = 222 (103 females, 119 males). For screen time, n = 221 (103 females, 118 males). For sleep, n = 177 (81 females, 96 males)
  6. Meeting the MVPA guidelines was defined as at least 60-minutes average daily MVPA. Meeting the muscle and bone strengthening guidelines was defined as participating in organised sport and exercise at least 3 times per week. Meeting the screen time guidelines was defined as an average of no more than 2 hours of recreational screen time per day. Meeting the sleep guidelines was defined as achieving between 9- and 11-hours average per night for children aged 6 to 11, and as achieving between 8- and 10-hours average per night for adolescents aged 15 to 17 years
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BMC Public Health

ISSN: 1471-2458

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