Journal
PEDIATRIC EXERCISE SCIENCE
Volume 25, Issue 3, Pages 347-359Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/pes.25.3.347
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Funding
- University of Oklahoma Health Sciences Center Vice President of Research Seed Grant Program
- University of Oklahoma Health Sciences Center General Clinical Research Center
- National Center for Research Resources, National Institutes of Health [M01 RR14467]
- NATIONAL CENTER FOR RESEARCH RESOURCES [M01RR014467] Funding Source: NIH RePORTER
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The purpose of this study was to determine if light physical activity (LPA) minimizes the impairment of cardiometabolic risk factors following a typical meal in adolescents. Eighteen adolescents (50% male, 14.8 +/- 2.3 yrs) consumed a meal (32% fat, 14% protein, 53% carbohydrate), then completed a walking (1.5mph for 45 min of each hour) or sitting treatment for 3 hr in randomized order on separate days. Following the meal, HDL cholesterol declined 4.8% but remained higher during walking at 3 hr (42.1mg/dl +/- 9.3) than sitting (8.4% decline; 40.5mg/dL +/- 9.9; treatment x time interaction, p < .03). The 3-hr insulin was lower after walking (24.8 mu IU/ml +/- 33.4) than sitting (37.8 mu IU/ml +/- 34.7; treatment x time interaction, p < .0001). Triglycerides increased by similar to 40% above baseline at 1 and 2 hr, with higher values for walking (treatment x time interaction, p < .02). However by 3 hr, triglycerides were not different from baseline. Area under the curve (AUC) analyses were not significantly different between treatments for any outcomes. Although minor, LPA appears to mitigate the undesirable postprandial changes in HDL cholesterol and insulin but not triglycerides, following a typical meal in adolescents.
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