TABLE 3.

Impact of the prepare pre‐pregnancy intervention on physical activity at mid‐pregnancy

	Randomization			Mid‐pregnancy a			Mean change
Exercise measurementsMet‐hr/week, Mean (SD)	Intervention N = 62	Usual care N = 54	p value d	Intervention N = 62	Usual care N = 54	p value d , e	Intervention N = 62	Usual care N = 54	p value e
Total activity	222.9	210.4	0.93	206.3	196.0	0.66	−16.6	−14.4	0.68
	(156.4)	(90.3)		(90.0)	(74.6)		(102.6)	(64.4)
Light intensity and above	208.4	200.6	0.89	196.6	185.7	0.63	−11.8	−14.9	0.37
	(146.7)	(90.2)		(90.0)	(73.4)		(93.8)	(63.5)
Intensity b
Sedentary	14.5	9.8	0.09	9.7	10.3	0.92	−4.9	0.5	0.016
	(15.3)	(7.3)		(6.5)	(7.1)		(15.0)	(7.6)
Light	130.1	129.7	0.91	128.2	119.6	0.39	−1.9	−10.1	0.24
	(61.0)	(52.1)		(45.1)	(37.2)		(49.3)	(47.4)
Moderate	72.5	66.4	0.73	64.5	64.9	0.91	−8.0	−1.5	0.78
	(104.0)	(70.3)		(54.1)	(52.7)		(72.1)	(49.9)
Vigorous	5.7	4.5	0.86	3.9	1.2	0.0002	−1.8	−3.3	0.25
	(8.1)	(5.8)		(5.5)	(3.0)		(6.8)	(6.33)
Types of activity
Household/caregiving	85.7	73.3	0.60	73.82	74.3	0.99	−11.9	1.0	0.11
	(78.5)	(52.6)		(55.9)	(55.9)		(44.0)	(38.2)
Occupational c	81.2	80.9	0.36	79.3	73.9	0.41	−2.2	−6.5	0.38
	(72.5)	(46.3)		(41.6)	(33.0)		(50.0)	(41.4)
Sports/exercise	17.7	15.5	0.90	17.0	11.0	0.03	−0.7	−4.5	0.11
	(15.8)	(12.3)		(14.1)	(9.5)		(13.6)	(13.8)
Transportation	21.7	24.5	0.56	26.2	24.7	0.50	4.5	0.2	0.17
	(14.5)	(20.8)		(18.0)	(20.7)		(15.3)	(21.3)
Inactivity	22.9	20.7	0.75	16.3	18.8	0.59	−6.6	−1.9	0.22
	(22.7)	(12.5)		(9.7)	(74.6)		(23.2)	(12.0)

Abbreviation: METs, metabolic equivalents.

^a Physical activity collected at mean 18.0 (SD 1.8) weeks gestation.

^b Classified as sedentary if < 1.5 METs, light if 1.5–<3.0 METs, moderate if 3.0–6.0 METs, or vigorous if >6.0 METs.

^c Missing data on 10 intervention and 7 usual care participants.

^d p‐values calculated using linear regression on log‐transformed values.

^e Adjusted for baseline total activity.