Skip to main content

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
Back to article page

BMC Pediatrics

ISSN: 1471-2431

Contact us