They found that although mothers with normal weight gave birth to the majority of infants with the lowest Apgar scores (a measure of oxygen deficit at birth), the proportion of low Apgar scores was greater in babies of overweight and obese mothers. Overall, the authors found that the rates of low Apgar scores increased with maternal Body Mass Index (BMI): overweight (BMI 25.0-29.9) was associated with a 55% increased risk of low Apgar scores at 5 minutes; obesity grade I (BMI 30-34.9) and grade II (BMI 35.0-39.9) was associated with a 2-fold increased risk; and obesity grade ΙII (BMI ≥ 40.0) was associated with a more than 3-fold increase in risk. Although this study is limited by the lack of data on the effects of clinical interventions and neonatal resuscitation efforts that may have been performed at the time of birth, these findings suggest that early detection of perinatal asphyxia is particularly relevant among infants of overweight and obese women although more studies are necessary to confirm these results in other populations. The authors say:" this population-based cohort study from Sweden clearly demonstrates increased risks of perinatal asphyxia-related complications with increasing maternal [Body Mass Index] in infants delivered at term." They continue: "Prevention of overweight and obesity in women of reproductive age is an important strategy to improve perinatal health." http://trymassmuscle.com/