How effective is physical exercise for pregnant women for preventing glucose intolerance or gestational diabetes mellitus (GDM)?
None of the trials reported large-for-gestational age babies, perinatal mortality or long-term outcomes for women or their babies. No information was available on health service costs. All trials were conducted in high-income countries.
GDM affects a significant number of women each year. GDM is associated with a wide range of adverse outcomes for women (type 2 diabetes mellitus) and their babies (birthweight >4kg and birth trauma). Recent observational studies have found physical activity during normal pregnancy decreases insulin resistance and therefore might help to decrease the risk of developing GDM.