PMID: 8589762Oct 1, 1995Paper

Resting metabolic rate and cardiovascular disease risk in resistance- and aerobic-trained middle-aged women

International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity
M J Toth, E T Poehlman

Abstract

To examine differences in resting metabolic rate (RMR) and cardiovascular disease risk in middle-aged women differing in training status. Cross-sectional. Fifty-four healthy middle-aged women characterized as resistance-trained (RT; n = 8; 43 +/- 3 yrs), aerobic-trained (AT; n = 12; 42 +/- 5 yrs) or untrained (UT; n = 34; 44 +/- 4 yrs) according to habitual exercise practices. RMR, substrate oxidation, body composition, body fat distribution, supine blood pressure, peak oxygen consumption (peak VO2), dietary intake and fasting levels of plasma lipids and hormones. RMR was higher (P < 0.01) in AT and RT women compared to UT women, independent of differences in fat-free mass. No differences in RMR were noted between RT and AT groups. No differences in estimated rates of carbohydrate or fat oxidation were noted among groups. RT women displayed lower plasma cholesterol (P < 0.01), LDL-C (P < 0.01) and supine diastolic blood pressure (P < 0.05) compared to UT and AT women. No differences, however, were noted among groups for triglycerides, HDL-C, supine systolic blood pressure or the insulin to glucose ratio. Stepwise regression analysis revealed that fat mass accounted for the greatest portion of the variation in plasma cholesterol...Continue Reading

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