Background: Physical activity(PA) during pregnancy provides physical and psychological benefits for mother and child. U.S. guidelines recommend ≥30 min of mode
Purpose: To examine, within a social–ecological framework, associations between multifaceted individual and environmental factors and habitual physical activit
【正】We all know being physically active is good for you.But do we know how good? People can live up to 3 years longer,even with as little as 15 min of physica