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Table 2 Means (standard deviations, SD) and medians (interquartile ranges, IQR) of overall activitya at four different time points (n = 471)

From: Physical activity patterns during pregnancy through postpartum

  17-22 weeks' gestation   27-30 weeks' gestation   3 months postpartum   12 months postpartum  
  Mean (SD) Median (IQR) Mean (SD) Median (IQR) Mean (SD) Median (IQR) Mean (SD) Median (IQR)
Fairly Light (h/wk) 3.9 (5.0) 2.3 (0.8-5.0) 3.4 (4.5) 2.2 (0.5-4.5) 3.8 (5.9) 1.6 (0.4-4.7) 3.4 (5.3) 1.8 (0.3-4.3)
Somewhat Hard (h/wk) 2.3 (4.8) 1.0 (0.0-2.7) 1.7 (3.0) * 0.8 (0.0-2.1) 2.7 (5.0) * 1.0 (0.0-3.4) 2.6 (4.6) 1.0 (0.0-3.0)
Hard or Very Hard (h/wk) 0.5 (2.0) 0.0 (0.0-0.0) 0.3 (1.4) 0.0 (0.0-0.0) 0.5 (1.5) * 0.0 (0.0-0.0) 0.7 (2.2) 0.0 (0.0-0.0)
Total (h/wk)b 6.6 (7.4) 4.4 (2.1-8.0) 5.4 (5.4) * 4.0 (2.0-6.8) 7.0 (8.2) * 4.2 (1.7-9.0) 6.7 (7.6) 4.2 (1.9-8.7)
Total (MET h/wk)c 24.7 (26.8) 17.2 (8.1-31.9) 19.1 (18.9) * 14.3 (6.5-27.0) 25.7 (29.3) * 15.9 (6.0-34.6) 26.7 (31.5) 18.3 (6.3-33.3)
  1. * Significantly different from the preceding time point at alpha level p < 0.05 (GEE model, adjusted for age group, race/ethnicity, education, marital status at pregnancy, parity, general health status, and pre-pregnancy body mass index).
  2. a Overall activity included recreational, occupational, transportation, child and adult care-giving, indoor household, and outdoor household activity.
  3. b Hours per week (h/wk); total h/wk is a sum of fairly light, somewhat hard, hard, or very hard activity.
  4. c MET hours per week (MET h/wk); total MET h/wk is the sum of total h/wk multiplied by established MET value19,20 of the reported type of physical activity.