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Table 2 Change between T0, T1 and T2 in sedentary time, LPA, MVPA and total time active

From: Change in level of physical activity during pregnancy in obese women: findings from the UPBEAT pilot trial

  T0 T1 Change T2 Change
(n = 140) (n = 76) (T1-T0) (n = 54) (T2-T0)
Absolute values (min/day)
SED 576.5 555.1 −21.5* 571.8 −4.7*
(510.6, 642.8) (505.6, 635.3)   (507.5, 615.9)
LPA 174.8 154.8 −20.0* 169.7 −5.1
(140.3, 222.2) (124.9, 191.7)   (142.7, 199.2)
MVPA 39.0 34.5 −4.5* 23.3 −15.7*ƚ
(24.7, 51.9) (23.9, 43.5)   (18.0, 38.0)
ACTIVE 215.6 194.8 −20.8* 198.6 −17.0*
(168.2, 264.9) (146.2, 228.3)   (163.4, 228.6)
Proportion of time accelerometer worn (% worn time)   
%SED 73.2 75.3 1.3 73.8 0.5
(68.5, 78.4) (70.5, 80.5) (−2.5, 5.8) (70.6, 79.9) (−2.2, 4.1)
%LPA 21.5 20.1 −0.5 21.9 0.9
(17.6, 25.8) (16.3, 25.5) (−4.1, 1.9) (17.8, 25.4) (−2.7, 2.8)
%MVPA 4.8 4.3 −0.4 3.0 −1.1*ƚ
(3.1, 6.3) (2.9, 5.2) (−1.3, 0.6) (2.3, 4.6) (−2.5, −0.3)
%ACTIVE 26.8 24.7 −1.5 26.3 −0.5
(21.6, 31.5) (19.6, 29.5) (−5.8, 2.7) (20.1, 29.4) (−4.1, 2.2)
Mean counts per minute (SD) 299 278 - 248* -
(114) (119)   (93)
  1. Figures are median (IQR) or mean (SD); Wilcoxon Signed Ranks Test or Paired Samples t-test used to test for differences.
  2. Definition of PA intensity: <100 cpm = Sedentary (SED); 100-1951 cpm = Light PA (LPA), >1951 cpm = Moderate + vigorous PA (MVPA); ≥100 cpm = total activity (ACTIVE).
  3. *p < 0.05 for change in median or mean between T0 and T1 or T0 and T2.
  4. ƚp < 0.05 for change in median or mean between T1 and T2.
  5. T0 = 16+0 – 18+6 weeks’ gestation; T1 = 27+0 – 28+6 weeks’ gestation; T2 = 35+0 – 36+6 weeks’ gestation.