Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Schoenfeld, Brad J.a; * | Contreras, Bretb | Vigotsky, Andrew D.c | Ogborn, Dand | Fontana, Fabioe | Tiryaki-Sonmez, Gula
Affiliations: [a] Department of Health Sciences, Program of Exercise Science, CUNY Lehman College, Bronx, NY, USA | [b] Sport Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand | [c] Kinesiology Program, Arizona State University, Phoenix, AZ, USA | [d] School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada | [e] School of Health, Physical Education, and Leisure Services, University of Northern Iowa, Cedar Falls, IA, USA
Correspondence: [*] Corresponding author: Brad J. Schoenfeld, 250 Bedford Park Blvd West, Bronx, NY 10462, USA. Tel.: +1 718 960 1999; E-mail:brad@workout911.com
Abstract: OBJECTIVE: The purpose of this study was to compare activation of the upper body musculature during the barbell bench press at varying training intensities. METHODS: Twelve young, resistance-trained men performed sets of the bench press to momentary muscular failure with two different loads: a high-load (HIGH) set at 80% of 1RM and a low-load (LOW) set at 50% 1RM. Exercise order was counterbalanced so that half the subjects performed the LOW condition first and the other half performed the HIGH first. Surface electromyography (EMG) was used to assess mean, peak, and iEMG muscle activation of the anterior deltoid, triceps brachii, and sternal and clavicular heads of the pectoralis major. RESULTS: The main effects for trials were significant for mean EMG (p < 0.001) and iEMG matched (p < 0.001) favoring HIGH and iEMG total favoring LOW (p = 0.001) across all muscle groups in both conditions with varying effect sizes. All other main effects and interactions were not statistically significant. CONCLUSION: Despite similarities in peak EMG amplitude, the greater results for mean and iEMG matched in HIGH suggests that heavier loads may produce greater muscle activation.
Keywords: Size principle, low-load, light weights, muscle hypertrophy, training intensity
DOI: 10.3233/IES-160620
Journal: Isokinetics and Exercise Science, vol. 24, no. 3, pp. 217-224, 2016
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl