Change in exercise level in pregnancy: 15–20 weeks (n=1200)
	Decreased (n=263 (21.9%))	Unchanged (n=665 (55.4%))	Increased (n=272 (22.7%))
Maternal characteristics
Maternal age, mean (SD)	30.74 (4.13)*	29.52 (4.58)†	30.39 (4.25)
Maternal BMI at 15 weeks, mean (SD)	25.07 (4.06)	24.60 (4.01)	25.20 (4.52)
Maternal years schooling	13.28 (0.72)	13.23 (0.86)	13.22 (0.82)
Maternal socioeconomic status	44.33 (15.49)*	40.96 (16.08)†	45.79 (16.21)
Maternal household income <€21 000, n (%)	15 (5.70)*	66 (10.03)	18 (6.62)
Maternal smoking in first trimester, n (%)	23 (8.75)	73 (10.98)†	13 (4.78)
Maternal alcohol intake in first trimester (units/week)	4.91 (5.79)	5.24 (6.82)†	3.98 (5.01)
Birth outcomes
Gestational age (weeks), mean (SD)	40 (1.20)	40 (1.19)	40 (1.14)
Birth weight (g), mean (SD)	3541 (498)	3487 (458)	3537 (448)
Neonatal adiposity (%), mean (SD)	11.44 (4.66)	10.90 (4.02)	11.08 (3.79)
Adiposity<10th centile (yes), n (%)	22 (8.37)	58 (8.87)	16 (5.88)
Adiposity>90th centile (yes), n (%)	41 (15.59)	68 (10.23)	23 (8.46)

*Different to ‘unchanged’.

†Different to ‘increased’.

BMI, body mass index.