title: [Leisure time physical exercise during pregnancy and the risk of miscarriage: a study within the Danish National Birth Cohort--secondary publication].
abstract: We investigated the association between exercise during pregnancy and risk of miscarriage among more than 90,000 pregnant women. Information on exposures was obtained by means of computer-assisted telephone interviews. A relation was found between the amount of exercise and the risk of miscarriage with the risk of miscarriage rising stepwise by the amount of exercise performed. Particularly "high impact exercise" was associated with an increased risk of miscarriage. No association was seen between exercise and risk of miscarriage after 18 weeks of gestation.
authors.affiliation: Syddansk Universitet, Afdeling for Epidemiologi, Statens Institut for Folkesundhed, Odense C. mimadsen@health.sdu.dk
authors.forename: Mia
authors.initials: M
authors.lastname: Madsen
authors.forename: Tina
authors.initials: T
authors.lastname: Jørgensen
authors.forename: Mette Lundsby
authors.initials: ML
authors.lastname: Jensen
authors.forename: Mette
authors.initials: M
authors.lastname: Juhl
authors.forename: Jørn
authors.initials: J
authors.lastname: Olsen
authors.forename: Per Kragh
authors.initials: PK
authors.lastname: Andersen
authors.forename: Anne-Marie Nybo
authors.initials: AM
authors.lastname: Andersen