Effect of resistance training with different frequencies and subsequent detraining on muscle mass and appendicular lean soft tissue, IGF-1, and testosterone in older women

European Journal of Sport Science
Matheus A NascimentoE S Cyrino

Abstract

To analyse the effect of resistance training (RT) frequency on muscle mass, appendicular lean soft tissue, insulin-like growth factor 1 (IGF-1), testosterone, and their changes with detraining in older women. Forty-five physically independent older women (≥ 60 years) were randomly assigned to perform RT either two (G2X, n = 21) or three times/week (G3X, n = 24), during 12 weeks (8 exercises, 1 set of 10-15 repetition maximum). Muscle mass and appendicular lean soft tissue, IGF-1, testosterone, and dietary intake were measured at pre-training, post-training, and after detraining (12 weeks). Muscle mass and appendicular lean soft tissue significantly increased post-training (G2X = +5.5% and G3X = +5.8%, P < .0001) with no differences between groups, and gains were retained after detraining (G2X = 100% and G3X = 99%, P < .0001). IGF-1 and dietary intake did not change for the groups during the study. Testosterone did not change post-training but significantly decreased after detraining (G2X = -21% and G3X = -50%, P < .0001). We conclude that lower RT frequency is as effective as higher frequency to improve muscle mass and appendicular lean soft tissue, and to maintain testosterone and IGF-1. Additionally, detraining may reduce tes...Continue Reading

References

Nov 1, 1995·International Journal of Sports Medicine·K Häkkinen, A Pakarinen
May 4, 2000·The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences·K L Fingerman
Apr 3, 2001·Medicine and Science in Sports and Exercise·J O MarxW J Kraemer
Apr 3, 2001·Medicine and Science in Sports and Exercise·S E BorstM L Pollock
May 25, 2002·Journal of the American Geriatrics Society·Stephen E BorstRandy W Braith
Jul 30, 2002·The American Journal of Clinical Nutrition·Jaehee KimDympna Gallagher
Nov 7, 2002·American Journal of Physiology. Endocrinology and Metabolism·Michelangela BarbieriGiuseppe Paolisso
Feb 15, 2003·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Marcas M BammanGary R Hunter
Sep 13, 2003·Journal of Applied Physiology·Timothy J Doherty
Nov 2, 2006·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Bret H GoodpasterAnne B Newman
Aug 10, 2007·Journal of Strength and Conditioning Research·Chad HarrisTerry Ann Spitzer Gibson
May 24, 2008·Maturitas·Fabio L OrsattiRoberto C Burini
Aug 12, 2008·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Tim R Henwood, Dennis R Taaffe
Feb 11, 2009·Medicine and Science in Sports and Exercise·UNKNOWN American College of Sports Medicine
Mar 24, 2009·Clinical Physiology and Functional Imaging·Savvas P TokmakidisAndreas Parlavantzas
Dec 7, 2010·Medicine and Science in Sports and Exercise·C Scott BickelMarcas M Bamman
Apr 14, 2012·Journal of Aging Research·Stephen P Sayers, Kyle Gibson
Jul 11, 2012·Current Sports Medicine Reports·Wayne L Westcott
Nov 22, 2012·Journal of Strength and Conditioning Research·Paulo T V FarinattiSteve J Fleck
Mar 7, 2014·Clinical Interventions in Aging·Alexandra Miranda Assumpção PicorelliLeani Souza Máximo Pereira
Jul 30, 2014·European Journal of Sport Science·Alex S RibeiroEdilson S Cyrino
Feb 13, 2016·European Review of Aging and Physical Activity : Official Journal of the European Group for Research Into Elderly and Physical Activity·Carla Coetsee, Elmarie Terblanche

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Citations

Feb 2, 2021·European Journal of Sport Science·Yun-Tsung ChenJung-Charng Lin
Apr 4, 2021·International Journal of Environmental Research and Public Health·Eduardo Vásquez-AranedaIgor Cigarroa
Jun 3, 2021·International Journal of Environmental Research and Public Health·Anna PieczyńskaMariola Pawlaczyk

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