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Resistance training conserves fat-free mass and resting energy expenditure following weight loss.
Obesity (Silver Spring). 2008 May; 16(5):1045-51.O

Abstract

OBJECTIVE

To determine what effect diet-induced approximately 12 kg weight loss in combination with exercise training has on body composition and resting energy expenditure (REE) in premenopausal African-American (AA) and European-American (EA) women.

METHODS AND PROCEDURES

This study was a longitudinal, randomized weight loss clinical intervention, with either aerobic (AT), resistance (RT), or no exercise training (NT). Forty-eight AA and forty-six EA premenopausal overweight (BMI between 27 and 30) women underwent weight loss to a BMI<25. Body composition (densitometry), REE (indirect calorimetry), maximal oxygen uptake (VO2max), and muscular strength (isometric elbow flexion) were evaluated when subjects were in energy balance.

RESULTS

AA women lost less fat-free mass (FFM, P<or=0.05) (47.0+/-4.6 to 46.9+/-5.0 kg) than EA women (46.4+/-4.9 to 45.2+/-4.6 kg). Regardless of race, RT maintained FFM (P<or=0.05) following weight loss (46.9+/-5.2 to 47.2+/-5.0 kg) whereas AT (45.4+/-4.2 to 44.4+/-4.1 kg) and NT (47.9+/-4.7 to 46.4+/-5.1 kg) decreased FFM (P<or=0.05). Both AT and NT decreased in REE with weight loss but RT did not. Significant time by group interactions (all P<or=0.05) for strength indicated that RT maintained strength and AT did not.

DISCUSSION

AA women lost less FFM than EA women during equivalent weight losses. However, following weight loss in both AA and EA, RT conserved FFM, REE, and strength fitness when compared to women who AT or did not train.

Authors+Show Affiliations

Department of Human Studies, University of Alabama at Birmingham, Birmingham, Alabama, USA. ghunter@uab.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18356845

Citation

Hunter, Gary R., et al. "Resistance Training Conserves Fat-free Mass and Resting Energy Expenditure Following Weight Loss." Obesity (Silver Spring, Md.), vol. 16, no. 5, 2008, pp. 1045-51.
Hunter GR, Byrne NM, Sirikul B, et al. Resistance training conserves fat-free mass and resting energy expenditure following weight loss. Obesity (Silver Spring). 2008;16(5):1045-51.
Hunter, G. R., Byrne, N. M., Sirikul, B., Fernández, J. R., Zuckerman, P. A., Darnell, B. E., & Gower, B. A. (2008). Resistance training conserves fat-free mass and resting energy expenditure following weight loss. Obesity (Silver Spring, Md.), 16(5), 1045-51. https://doi.org/10.1038/oby.2008.38
Hunter GR, et al. Resistance Training Conserves Fat-free Mass and Resting Energy Expenditure Following Weight Loss. Obesity (Silver Spring). 2008;16(5):1045-51. PubMed PMID: 18356845.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Resistance training conserves fat-free mass and resting energy expenditure following weight loss. AU - Hunter,Gary R, AU - Byrne,Nuala M, AU - Sirikul,Bovorn, AU - Fernández,José R, AU - Zuckerman,Paul A, AU - Darnell,Betty E, AU - Gower,Barbara A, Y1 - 2008/03/06/ PY - 2008/3/22/pubmed PY - 2008/7/31/medline PY - 2008/3/22/entrez SP - 1045 EP - 51 JF - Obesity (Silver Spring, Md.) JO - Obesity (Silver Spring) VL - 16 IS - 5 N2 - OBJECTIVE: To determine what effect diet-induced approximately 12 kg weight loss in combination with exercise training has on body composition and resting energy expenditure (REE) in premenopausal African-American (AA) and European-American (EA) women. METHODS AND PROCEDURES: This study was a longitudinal, randomized weight loss clinical intervention, with either aerobic (AT), resistance (RT), or no exercise training (NT). Forty-eight AA and forty-six EA premenopausal overweight (BMI between 27 and 30) women underwent weight loss to a BMI<25. Body composition (densitometry), REE (indirect calorimetry), maximal oxygen uptake (VO2max), and muscular strength (isometric elbow flexion) were evaluated when subjects were in energy balance. RESULTS: AA women lost less fat-free mass (FFM, P<or=0.05) (47.0+/-4.6 to 46.9+/-5.0 kg) than EA women (46.4+/-4.9 to 45.2+/-4.6 kg). Regardless of race, RT maintained FFM (P<or=0.05) following weight loss (46.9+/-5.2 to 47.2+/-5.0 kg) whereas AT (45.4+/-4.2 to 44.4+/-4.1 kg) and NT (47.9+/-4.7 to 46.4+/-5.1 kg) decreased FFM (P<or=0.05). Both AT and NT decreased in REE with weight loss but RT did not. Significant time by group interactions (all P<or=0.05) for strength indicated that RT maintained strength and AT did not. DISCUSSION: AA women lost less FFM than EA women during equivalent weight losses. However, following weight loss in both AA and EA, RT conserved FFM, REE, and strength fitness when compared to women who AT or did not train. SN - 1930-7381 UR - https://www.unboundmedicine.com/medline/citation/18356845/Resistance_training_conserves_fat_free_mass_and_resting_energy_expenditure_following_weight_loss_ L2 - https://doi.org/10.1038/oby.2008.38 DB - PRIME DP - Unbound Medicine ER -