Pregnant women who perform exercises that push their heart rate beyond 150 beats a minute may increase their likelihood of suffering a miscarriage, according to a study by Aichi Medical University.
A pulse rate exceeding 150 can cause irregularities in a fetus' heart rate, which has been linked to premature labor and miscarriage, according to the research team led by Mitsuoki Asai, an associate professor of obstetrics and gynecology at Aichi Medical University.
The finding is to be presented at a meeting of the Japan Society of Obstetrics and Gynecology next month in Fukuoka.