| Titre : | Maternal leisure-time exercise and timely delivery. (1998) |
| Auteurs : | M. HATCH ; B. Levin ; X.O. SHU ; M. SUSSER ; Columbia School of Public Health. New York NY. USA |
| Type de document : | Article |
| Dans : | American journal of public health (vol. 88, n° 10, 1998) |
| Pagination : | 1528-1533 |
| Langues: | Anglais |
| Mots-clés : | Activité physique ; Grossesse ; Prématurité ; Epidémiologie ; Facteur risque ; Nouveau né ; Homme ; Femme ; Etats Unis ; Amérique du Nord ; Amérique |
| Résumé : | [BDSP. Notice produite par INIST HLR0xmbM. Diffusion soumise à autorisation]. Objectives. This study investigated whether, in a general obstetric population, exercise in pregnancy affects the timeliness of delivery. The hypothesis was that maternal exercise would not raise the risk of preterm birth. Methods. A community cohort of 557 prenatal patients was followed up until the time of delivery. Data were collected on exercise in each trimester : none, low-moderate (<1000 kcal [4184 kJ]/wk in energy expenditure), or heavy ( 1000 kcal/wk). Timely delivery was adopted as an outcome criterion. Thus, in the analysis, a term birth was treated as optimal and survival techniques were used to estimate risks for both preterm and postdates delivery. Results. No association was found between low-moderate exercise and gestational length. Heavier exercise appeared to reduce, rather than raise, the risk of preterm birth. The adjusted relative risk among conditioned heavy exercisers was 0.11 (95% confidence inter=0.02,0.81). After term, conditioned heavy exercisers delivered faster than nonexercisers. Conclusions. The most important finding was the lack of evidence that vigorous maternal exercise is a risk factor for preterm delivery. A promising finding was that conditioned heavy exercisers have timely deliveries. |
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