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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology


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ORIGINAL ARTICLE  BODY COMPOSITION, NUTRITION AND SUPPLEMENTATION


The Journal of Sports Medicine and Physical Fitness 2018 April;58(4):457-64

DOI: 10.23736/S0022-4707.16.06730-X

Copyright © 2016 EDIZIONI MINERVA MEDICA

language: English

Resistance training with dietary intake maintenance increases strength without altering body composition in older women

Matheus A. do NASCIMENTO 1, 2 , Aline M. GERAGE 3, Renata S. JANUÁRIO 3, Fábio L. PINA 1, Luís A. GOBBO 1, 4, Jerry L. MAYHEW 5, Edilson S. CYRINO 1

1 Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil; 2 Paraná State University, Paranavaí Campus, Paranavaí, Brazil; 3 Department of Physical Education, University of Northern Parana, Londrina, Parana, Brazil; 4 Department of Physical Education, School of Technology and Sciences, Estadual Paulista University, Pres. Prudente, Brazil; 5 Exercise Science Department, Truman State University, Kirksville, MO, USA


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BACKGROUND: Evidence suggests that the aging process tends to lead to sarcopenia and osteoporosis which reduce the quality of life in older women. Resistance training (RT) is widely supported as a means of delaying or offsetting the decline in muscle strength and loss of bone mineral content in older women. The purpose of this investigation was to analyze the effects of a 12-wk RT program (3 times a week) with dietary intake maintenance on muscle strength and body composition of healthy, sedentary older women.
METHODS: Forty-four older women were randomly assigned to a RT program (N.=22, 66.3±4.8 years, 60.7±9.1 kg, 153.1±0.90 cm, 24.9±3.3 kg/m²) or a control group (N.=22, 66.4±4.0 years, 63.3±7.5 kg, 155.5±5.8 cm, 26.2±2.6 kg/m²) performing stretching exercises during the same period. One-repetition maximum test on chest press and leg extension were used to assess muscle strength. Body composition was measured by dual energy x-ray absorptiometry to determine fat mass, fat-free mass, and bone mineral content. Dietary intake was recorded using a 3-day food records. All subjects maintained their normal diet during the investigation.
RESULTS: No significant differences were found for the body composition components within and between groups. A significant time by group interaction indicated that the RT group made greater improvements in upper and lower limb muscle strength (chest press ~12%, P=0.0001; leg extension ~13%, P<0.0001).
CONCLUSIONS: These results suggest that RT program improves muscle strength of major muscle groups, without altering body composition in older women under dietary intake maintenance.


KEY WORDS: Geriatrics - Dietary supplements - Resistance training

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Publication History

Issue published online: March 16, 2018
Article first published online: October 13, 2016
Manuscript accepted: October 12, 2016
Manuscript revised: July 26, 2016
Manuscript received: May 27, 2016

Cite this article as

do Nascimento MA, Gerage AM, Januário RS, Pina FL, Gobbo LA, Mayhew JL, et al. Resistance training with dietary intake maintenance increases strength without altering body composition in older women. J Sports Med Phys Fitness 2018;58:457-64. DOI: 10.23736/S0022-4707.16.06730-X

Corresponding author e-mail

matheusamarante@hotmail.com