Lam, Eddie T. C.; Black, Jill M.; Little, Kathleen D.; Ausherman, Judith; Rafiroiu, Codruta
March 2002
American Journal of Health Studies;2002, Vol. 18 Issue 1, p38
Academic Journal
Previous research regarding the effects of exercise on pregnancy outcomes has been inconsistent. The purpose of this study was to adopt an objective research technique, meta-analysis, to summarize and analyze different studies with controversial results. Three coding variables (i.e., exercise duration, pre-pregnancy weight, and age) were selected in this study for comparisons. Though the effect size (ES) of the pregnant mothers who exercised under 30 minutes was greater than that of those who exercised between 30 and 60 minutes, the overall ES (-107.838, 95% CI = -482.93 to 267.26) indicated no significant birth weight differences between the two groups. On the whole, the results of this study support the notion that a significant positive relationship exists between birth weight and the prepregnancy weight. However, regression analysis indicated that a significant (p < .05) positive relationship existed between birth weight and the pre-pregnancy weight of the pregnant mothers (R =.75, p=.04). The conclusions of this study should be cautiously interpreted since they are limited to the selected studies under investigation. Directions and recommendations for future research are discussed.


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