Evidence for an Upper Threshold for Resistance Training Volume in Trained Women
Authors: Paulo Gentil
Victor Silveira Coswig
James P Fisher
Antonio Paoli
Matheus Barbalho
James Steele
Journal: Medicine and science in sports and exercise (2019)
Discipline: CLINICAL MEDICINE
Keywords: Resistance training; Muscle performance; Hypertrophy; Trained women; Volume
Affiliations: Department of Biological Science and Health, University of Amazonia, Belém, Pará, BRAZIL., College of Physical Education and Dance, Federal University of Goiás, Goiânia, Goiás, BRAZIL., College of Physical Education, Federal University of Pará, Castanhal, Pará, BRAZIL., School of Sport, Health and Social Sciences, Southampton Solent University, Southampton, UNITED KINGDOM., ukactive Research Institute, London, UNITED KINGDOM., Department of Biomedical Sciences, Physiological Laboratory, University of Padova, Padova, ITALY.

Abstract:  Introduction: The purpose of the present study was to compare the effects of different volumes of resistance training (RT) on muscle performance and hypertrophy in trained women. Methods: The study included 40 volunteers that performed RT for 24 wk divided into groups that performed 5 (G5), 10 (G10), 15 (G15), and 20 (G20) sets per muscle group per session. Ten-repetition maximum (10RM) tests were performed for the bench press, lat pulldown, 45° leg press, and stiff-legged deadlift. Muscle thickness (MT) was measured using ultrasound at biceps brachii, triceps brachii, pectoralis major, quadriceps femoris, and gluteus maximus. Results: All groups significantly increased all MT measures and 10RM tests after 24 wk of RT (P &lt; 0.05). Between-group comparisons revealed no differences in any 10RM test between G5 and G10 (P &gt; 0.05). G5 and G10 showed significantly greater 10RM increases than G15 for lat pulldown, leg press, and stiff-legged deadlift. 10RM changes for G20 were lower than all other groups for all exercises (P &lt; 0.05). G5 and G10 showed significantly greater MT increases than G15 and G20 in all sites (P &lt; 0.05). MT increased more in G15 than G20 in all sites (P &lt; 0.05). G5 increases were higher than G10 for pectoralis major MT, whereas G10 showed higher increases in quadriceps MT than G5 (P &lt; 0.05). Conclusions: Five to 10 sets per week might be sufficient for attaining gains in muscle size and strength in trained women during a 24-wk RT program. There appears no further benefit by performing higher exercise volumes. Because lack of time is a commonly cited barrier to exercise adoption, our data support RT programs that are less time consuming, which might increase participation and adherence. 

Retracted: No

PubPeer comments:
 Copy pasted from https: journals.lww.com acsm-msse Citation 9000 Upper_Threshold_for_Resistance_Training_Volume_in.96058.aspx :  RETRACTION: Upper Threshold for Resistance Training Volume in Trained Womenu2014RETRACTION. Medicine Science in Sports Exercise: March 26, 2021 - Volume Publish Ahead of Print - Issue -doi: 10.1249 MSS.0000000000002672 The Editor-in-Chief of Medicine Science in Sports Exercise is retracting this article (1) because of concerns about the veracity of the data. Two authors of the article raised questions regarding the data in the article and requested that it be retracted. The other authors and their institutions were contacted and permitted to respond. Those authors and institutions reported no irregularities in the conduct of the research. However, at the request of the Editor-in-Chief of Medicine Science in Sports Exercise, four content area experts with statistical expertise investigated the data in detail, considered the author and institutional responses, and provided evaluations. Based on their reports and all pertinent information gathered, the data were judged to be highly unusual, correspondingly dubious, and insufficiently trustworthy. Medicine Science in Sports Exercise is a member of the Committee on Publications Ethics (COPE) and is committed to the very highest standards of publication ethics. Medicine Science in Sports Exerciseu00ae has followed the processes set forth by COPE for the handling of such matters. Reference. 1. Barbalho M, Coswig VS, Steele J, Fisher JP, Paoli A, Gentil P. Evidence for an upper threshold for resistance training volume in trained women. Med Sci Sports Exerc. 2019;51(3):515u201322. DOI: 10.1249 MSS.0000000000001818 PMID: 30779716  ,