PMID: 9638034Jun 25, 1998Paper

Exercise tolerance, body composition and blood lipids in obese African-American women following short-term training

The Journal of Sports Medicine and Physical Fitness
L SzmedraW M Shearn

Abstract

The purpose of this investigation was to examine the exercise tolerance, body composition and blood lipids in African-American women, possessing greater than or equal to 30% body fat, following six weeks of endurance training. Oxygen consumption (VO2), central hemodynamics, blood lipids, body weight, body fat, and the body mass index of seven subjects (21.0 +/- 0.8 yrs) were studied. Heart rate (HR), blood pressure (BP), exercise duration, rating of perceived exertion (RPE), blood lactate (bLA) and VO2 were obtained in response to a maximal exercise tolerance test on a motorized treadmill. Subjects trained three times per week for 50 minutes per session (30 minutes at 70% maximal oxygen consumption (VO2max). Dependent "t"-tests revealed significant (p < 0.05) increases in VO2max, 27%; exercise duration, 31%; as well as peak HR, systolic blood pressure (SBP), and bLA. Values for submaximal HR, SBP, RPE during the post-training test were lower. In addition, body weight, body fat and the body mass index decreased 2.2%, 1.3% and 3.4% respectively. There were no changes in blood lipids. These findings suggest short-term training at 70% VO2max provides the necessary stimulus for obese women to improve exercise tolerance and body comp...Continue Reading

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