Can physical activity reduce excessive gestational weight gain? Findings from a Chinese urban pregnant women cohort study

Table 4 Multiple binary logistic regression of the association of physical activity during pregnancy and excessive gestational weight gain (n = 862)

	Groups	OR	aOR ^†	95%CI ^†	P ^†
2^nd trimester	Sedentary	1.00	1.00	-	-
	Low active	0.90	0.95	(0.62,1.46)	0.81
	Somewhat active	0.74	0.77	(0.50,1.17)	0.22
	Active	0.56	0.59	(0.36,0.95)	0.03
3^rd trimester	Sedentary	1.00	1.00	-	-
	Low active	0.77	0.72	(0.50,1.05)	0.09
	Somewhat active	0.65	0.66	(0.43,1.00)	0.05
	Active	0.59	0.62	(0.36,1.06)	0.08
Last 2 trimesters	Sedentary	1.00	1.00	-	-
	Low active	1.05	1.05	(0.68,1.62)	0.83
	Somewhat active	0.78	0.85	(0.54,1.34)	0.49
	Active	0.64	0.60	(0.35,1.03)	0.06

^† Adjusted odds ratios in multiple binary logistic regression controlling for maternal age, education, job type, family income, pre-pregnancy BMI, gestational age, newborns sex, passive tobacco exposure, daily food energy intake. Sedentary group was the reference

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