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Table 2 Duration of physical activity, sedentary behavior and sleep behaviors through adolescence, by sex, Birth-to-Twenty Plus cohort, Johannesburg, South Africa

From: Longitudinal patterns of physical activity, sedentary behavior and sleep in urban South African adolescents, Birth-To-Twenty Plus cohort

 

12 y

13 y

14 y

15 y

16 y

17 y

Any

Q1a

Q2

Q3

Any

Q1

Q2

Q3

Any

Q1

Q2

Q3

Any

Q1

Q2

Q3

Any

Q1

Q2

Q3

Any

Q1

Q2

Q3

%

Min/ wk

Min/ wk

Min/ wk

%

Min/ wk

Min/ wk

Min/ wk

%

Min/ wk

Min/ wk

Min/ wk

%

Min/ wk

Min/ wk

Min/ wk

%

Min/ wk

Min/ wk

Min/ wk

%

Min/ wk

Min/ wk

Min/ wk

Males

N = 502

N = 669

N = 634

N = 640

N = 660

N = 640

 Informal physical activityb

---3

–

–

–

94

210

360

638

92

180

360

615

82

60

210

480

51

0

30

240

59

0

120

360

 Physical educationb

49

0

0

150

27

0

0

30

22

0

0

0

15

0

0

0

35

0

0

60

38

45

90

120

 Organized sportsb

84

46

186

383

81

37

138

355

66

0

92

300

46

0

0

245

41

0

0

138

43

0

0

174

 Walking to/from schoolb

76

10

150

250

75

0

150

250

81

50

150

250

87

50

150

200

77

20

100

200

70

0

100

200

 Sedentary behavior b

100

540

750

750

100

660

990

1500

100

660

990

1680

100

990

1470

1950

100

840

1335

2040

100

1050

1633

2310

 School-night sleepc

–

–

–

–

–

–

–

–

100

480

540

570

100

480

510

570

100

480

510

540

100

450

480

540

 Weekend sleepc

–

–

–

–

–

–

–

–

100

540

600

630

100

540

600

660

100

540

600

660

100

540

600

660

Females

N = 578

N = 745

N = 705

N = 705

N = 735

N = 702

 Informal physical activityb

–

–

–

–

90

150

275

510

82

60

210

300

62

0

60

240

30

0

0

45

21

0

0

0

 Physical educationb

47

0

0

120

35

0

0

60

25

0

0

60

20

0

0

0

36

0

0

60

31

60

90

135

 Organized sportsb

73

0

55

149

69

0

55

148

49

0

0

94

15

0

0

0

26

0

0

9

22

0

0

0

 Walking to/from schoolb

72

0

150

263

72

0

150

300

75

10

150

300

78

30

150

300

67

0

100

200

57

0

70

225

 Sedentary behaviorc

100

540

780

1080

100%

750

1080

1680

100

660

1020

1680

100

1110

1740

2370

100

1020

1655

2340

100

1260

1950

2790

 School-night sleepc

–

–

–

–

–

–

–

–

100

480

510

540

100

450

510

540

100

459

510

520

100

420

480

540

 Weekend sleep4c

–

–

–

–

–

–

–

–

100

540

600

630

100

540

600

660

100

540

600

660

100

540

600

660

  1. 1Respondents reporting at least 1 min per week of specific behavior
  2. aQ1: 25th percentile; Q2: 50th percentile; Q3: 75th percentile
  3. bMinutes per week
  4. cMinutes per night
  5. -- Module not administered