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Table 2 Accelerometer-measured sedentary time and physical activity in young Australian adult women and mena

From: Objectively measured patterns of sedentary time and physical activity in young adults of the Raine study cohort

  All (n = 773) Women (n = 389) Men (n = 384) p value*
Waking wear time, h/day 15.0 ± 1.6 15.0 ± 1.5 14.9 ± 1.6 .584
Sedentary, % of waking wear 61.4 ± 10.1 % 62.8 ± 9.0 % 60.0 ± 11.0 % <.001
Light activity, % of waking wear 34.6 ± 9.1 % 33.8 ± 8.2 % 35.3 ± 9.8 % <.001
Moderate activity, % of waking wear 3.7 ± 2.8 % 3.1 ± 2.5 % 4.4 ± 3.0 % <.001
Vigorous activity, % of waking wear 0.3 ± 0.6 % 0.3 ± 0.6 % 0.2 ± 0.5 % .010
Sedentary time, h/day 9.2 ± 1.6 9.4 ± 1.5 8.9 ± 1.7 .178
Light activity, h/day 5.2 ± 1.5 5.1 ± 1.4 5.3 ± 1.6 .002
Moderate activity, min/day 33.8 ± 25.2 28.4 ± 22.3 39.1 ± 26.7 <.001
Vigorous activity, min/day 2.5 ± 5.3 2.6 ± 5.9 2.3 ± 4.7 .020
Uncensored step counts, n/day 14758 ± 508 14002 ± 4220 15522 ± 5743 <.001
Prolonged sedentary time (in ≥30 min bouts), h/day 2.1 ± 1.2 2.1 ± 1.1 1.9 ± 1.2 .345
MVPA, min/day
All minutes 36.2 ± 27.5 31.1 ± 24.6 41.4 ± 29.2 <.001
In modified bouts ≥10 minb 14.4 ± 19.2 12.5 ± 17.5 16.4 ± 20.7 <.001
In strict bouts ≥10 min 7.9 ± 12.3 7.2 ± 11.2 8.6 ± 13.3 .036
% averaging ≥150 min/week MVPA
All minutes 47.25 ± 26.88 42.10 ± 25.18 51.66 ± 27.54 <.001
In modified bouts ≥10 minb 20.23 ± 20.88 14.38 ± 19.59 21.65 ± 21.83 .004
In strict bouts ≥10 min 11.15 ± 13.74 10.91 ± 12.78 11.35 ± 14.53 .234
Accelerometer counts/min, cpm
All waking wear time, cpm 317 (244–399) 296 (229–367) 337 (256–442) <.001
Sedentary time, cpm 15 (13–18) 15 (13–17) 15 (12–18) .038
Light activity, cpm 545 (502–598) 535 (489–575) 559 (515–619) <.001
Moderate activity, cpm 2922 (2684–3234) 2914 (2651–3182) 2927 (2700–3260) .142
Vigorous activity, cpm 6798 (6239–6798) 6972 (6310–8006) 6614 (6200–7584) .026
MVPA, cpm 3031 (2712–3535) 3009 (2685–3557) 3059 (2741–3531) .565
  1. Data are mean ± SD or median (25th–75th percentile) Abbreviations: SD standard deviation; MVPA (moderate to vigorous physical activity); cpm counts per minute
  2. aActiGraph, GT3X+ accelerometer, low-frequency extension, minute epochs classed as: sedentary (<100 cpm) light (100–1951 cpm), moderate (1952–5274 cpm) or vigorous (≥5275 cpm)
  3. bmodified bouts with at least 10 min ≥ MVPA threshold, allowing up to 2 min below the MVPA threshold per bout
  4. *p for difference between men and women, significant p < .05, by t test (for mean ± SD) or Mann-Whitney U test (for medians)