Hyperthermia – Overheating During Pregnancy
Heat stress during exercise creates concern for two reasons. First, an increase in the mother's core temperature (hyperthermia) can be harmful to the baby’s development. Second, loss of water in the mother (dehydration) can decrease the amount of blood available to the fetus and lead to increased risk of preterm contractions.
In non-pregnant women, moderate aerobic exercise causes significant increases in core body temperature. Pregnant women, whether they exercise or not, experience a general increase in base metabolic rate and core temperature. Fortunately, pregnant women regulate their core temperature very efficiently. Increased blood flow to the skin and the expanded skin surface release increased body heat.
It has been shown that pregnant women do not have as much of an increase in body temperature during exercise as those who are not pregnant. However, it is recommended that pregnant women avoid exercising in non-breathable clothing and in very hot or humid conditions, since the impact of hyperthermia can be severe. Using fans during indoor activity, swimming, and wearing light colored, loose fitting clothing may all help in dissipating heat during exercise.
Hyperthermia – Overheating During PregnancyHeat stress during exercise creates concern for two reasons. First, an increase in the mother's core temperature (hyperthermia) can be harmful to the baby’s development. Second, loss of water in the mother (dehydration) can decrease the amount of blood available to the fetus and lead to increased risk of preterm contractions.In non-pregnant women, moderate aerobic exercise causes significant increases in core body temperature. Pregnant women, whether they exercise or not, experience a general increase in base metabolic rate and core temperature. Fortunately, pregnant women regulate their core temperature very efficiently. Increased blood flow to the skin and the expanded skin surface release increased body heat.It has been shown that pregnant women do not have as much of an increase in body temperature during exercise as those who are not pregnant. However, it is recommended that pregnant women avoid exercising in non-breathable clothing and in very hot or humid conditions, since the impact of hyperthermia can be severe. Using fans during indoor activity, swimming, and wearing light colored, loose fitting clothing may all help in dissipating heat during exercise.
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