PMID: 3766435Oct 1, 1986Paper

The effects of exercise on milk yield, milk composition, and offspring growth in rats

The American Journal of Clinical Nutrition
J Treadway, S A Lederman

Abstract

This study examined effects of exercise training throughout pregnancy and lactation upon selected indicators of lactational performance in Wistar rats. During the 7 wk prior to mating, experimental female rats were gradually trained to swim for 2 h/day, 5 days/wk with a 3% tail weight; they continued swimming until the 19th day of pregnancy. Control animals remained sedentary. Swimming resumed during days 2-14 of lactation. Food intake was greater in exercised rats during the lactation period. Body weights of the two groups were comparable. Mild yield (day 10), energy content (day 15), and protein and fat concentrations did not differ, but milk of exercised rats had a lower lactose concentration. The exercise regimen had no statistically significant effect on litter size or on offspring weight to day 15. This study indicates that moderate-intensity, aerobic exercise does not markedly affect the lactational performance of ad libitum-fed rats.

Citations

Nov 17, 2020·Nutrition Reviews·Guadalupe L Rodríguez-GonzálezElena Zambrano
Jan 1, 1989·Comparative Biochemistry and Physiology. A, Comparative Physiology·J H Brackenbury, M S el-Sayed
Jul 1, 1995·American Journal of Obstetrics and Gynecology·J F Clapp, K D Little

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