The Relationship of Objectively Measured Physical Activity and Sedentary Behaviour with Gestational Weight Gain and Birth Weight

Table 2

Associations between PA, sedentary behaviour, gestational weight gain, and birth weight.

	Gestational weight gain between 15 and 32–35 weeks		Gestational weight gain per week		Birth weight
	Beta	95% CI	Beta	95% CI	Beta	95% CI
15 weeks of gestation*
% MVPA	−0.07	−0.48; 0.34	−0.002	−0.02; 0.02	26.93	−14.79; 68.65
% Sedentary behaviour	−0.07	−0.15; 0.01	−0.004	−0.01; 0.001	2.45	−5.53; 10.42
Change from 15 to 32–35 weeks of gestation*
% MVPA	−0.16	−0.47; 0.15	−0.01	−0.03; 0.01	8.10	−23.83; 68.44
% Sedentary behaviour	−0.02	−0.12; 0.07	−0.001	−0.01; 0.004	0.59	−8.91; 10.09

Moderate to vigorous PA (MVPA) and sedentary behaviour were entered into the same model, controlled for intervention group, age, parity, BMI, and (change in) gestational age. The model with MVPA and sedentary behaviour at 32–35 weeks was also controlled for baseline values and therefore reflects the betas for the changes in MVPA and sedentary behaviour.
CI: confidence interval; MVPA: moderate to vigorous physical activity; PA: physical activity.