Weight training increases fat-free mass and strength in untrained young women

Journal of the American Dietetic Association
K Cullinen, M Caldwell

Abstract

To examine the effects of a weight training program on the resting metabolic rate, fat-free mass, strength, and dietary intake of untrained young women. A 12-week weight training program was completed by 20 previously untrained women aged 19 through 44 years. Twenty-three study subjects and 14 control subjects were recruited on a volunteer basis. Twenty study subjects and 10 control subjects completed the study. Study subjects participated in a 12-week moderate-intensity, progressive resistance weight training program consisting of 2 supervised sessions per week with 6 types of lifting exercises per session. Resting metabolic rate, fat-free mass, strength, and dietary intake were measured before and immediately after the study. Repeated measures analysis of variance and t tests (unequal variance and paired) were used to determine interaction effects and differences within and between groups. The study group increased their fat-free mass (mean+/-standard deviation) from 44.2+/-5.4 kg to 46.2+/-6.0 kg (P<.001). Elbow flexion, elbow extension, and knee flexion strength all increased from 28.9+/-5.3 to 34.5+/-3.8, 16.9+/-4.9 to 22.1+/-5.3, and 39.5+/-8.6 to 48.6+/-7.3 ft-lb, respectively (P<.001). Percent body fat decreased from 29...Continue Reading

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Citations

Jun 23, 1999·British Journal of Sports Medicine·B PrabhakaranB C Leutholtz
Jan 16, 2004·Experimental Gerontology·Isabelle J DionneEric T Poelhman
Nov 25, 2004·Best Practice & Research. Clinical Gastroenterology·Joseph E DonnellyRichard Washburn
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May 8, 2008·American Journal of Human Biology : the Official Journal of the Human Biology Council·Andrew W Froehle
Nov 8, 2005·Nursing & Health Sciences·Sriareporn PunpilaiBoonyaprapa Sombut
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Feb 11, 2016·Journal of Racial and Ethnic Health Disparities·Lorena MartinArlette C Perry
Aug 17, 2019·Frontiers in Psychiatry·Valentin Stefanov Panayotov
Feb 2, 2015·Open Medicine·Stanisław SawczynPaweł Cięszczyk
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Jan 25, 2003·Medicine and Science in Sports and Exercise·William J KraemerHoward G Knuttgen

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