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

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

	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*
SED	(510.6, 642.8)	(505.6, 635.3)		(507.5, 615.9)	−4.7*
LPA	174.8	154.8	−20.0*	169.7	−5.1
LPA	(140.3, 222.2)	(124.9, 191.7)		(142.7, 199.2)	−5.1
MVPA	39.0	34.5	−4.5*	23.3	−15.7*^ƚ
MVPA	(24.7, 51.9)	(23.9, 43.5)		(18.0, 38.0)	−15.7*^ƚ
ACTIVE	215.6	194.8	−20.8*	198.6	−17.0*
ACTIVE	(168.2, 264.9)	(146.2, 228.3)		(163.4, 228.6)	−17.0*
*Proportion of time accelerometer worn* (% worn time)
%SED	73.2	75.3	1.3	73.8	0.5
%SED	(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
%LPA	(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
%MVPA	(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
%ACTIVE	(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*	-
Mean counts per minute (SD)	(114)	(119)		(93)	-

Figures are median (IQR) or mean (SD); Wilcoxon Signed Ranks Test or Paired Samples t-test used to test for differences.
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).
*p < 0.05 for change in median or mean between T0 and T1 or T0 and T2.
^ƚp < 0.05 for change in median or mean between T1 and T2.
T0 = 16⁺⁰ – 18⁺⁶ weeks’ gestation; T1 = 27⁺⁰ – 28⁺⁶ weeks’ gestation; T2 = 35⁺⁰ – 36⁺⁶ weeks’ gestation.

ISSN: 1471-2393