Tags

Type your tag names separated by a space and hit enter

Muscle activation during resistance exercise at 70% and 90% 1-repetition maximum in resistance-trained men.
Muscle Nerve. 2017 09; 56(3):505-509.MN

Abstract

INTRODUCTION

Muscle activation was investigated during resistance exercise with 2 relatively high-intensity loads.

METHODS

Ten resistance-trained men performed the leg press exercise to repetition failure: a set at 70% of 1-repetition maximum (1RM) and a set at 90% of 1RM. Surface electromyography (EMG) was used to assess peak and mean muscle activation of the vastus lateralis, rectus femoris, and vastus medialis.

RESULTS

Peak and mean EMG remained greater at 90% than 70% 1RM across all repetitions (P = 0.03 and P = 0.02, respectively). Main effects for trial were also significant for mean EMG activity of the final common repetitions (P = 0.03) favoring 90% 1RM; however, peak EMG activity was similar during the final common repetitions of the 70% and 90% 1RM sets.

CONCLUSIONS

Across all repetitions, 90% 1RM appears to produce greater muscle activation during the leg press exercise, but similar peak EMG was observed during the final common repetitions of each set. Muscle Nerve 56: 505-509, 2017.

Authors+Show Affiliations

Department of Health Professions, Hofstra University, Hempstead, New York, 11549, USA.Department of Health Professions, Hofstra University, Hempstead, New York, 11549, USA.Department of Health Professions, Hofstra University, Hempstead, New York, 11549, USA.Department of Health Professions, Hofstra University, Hempstead, New York, 11549, USA.Department of Health Professions, Hofstra University, Hempstead, New York, 11549, USA.Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, Georgia, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27935085

Citation

Gonzalez, Adam M., et al. "Muscle Activation During Resistance Exercise at 70% and 90% 1-repetition Maximum in Resistance-trained Men." Muscle & Nerve, vol. 56, no. 3, 2017, pp. 505-509.
Gonzalez AM, Ghigiarelli JJ, Sell KM, et al. Muscle activation during resistance exercise at 70% and 90% 1-repetition maximum in resistance-trained men. Muscle Nerve. 2017;56(3):505-509.
Gonzalez, A. M., Ghigiarelli, J. J., Sell, K. M., Shone, E. W., Kelly, C. F., & Mangine, G. T. (2017). Muscle activation during resistance exercise at 70% and 90% 1-repetition maximum in resistance-trained men. Muscle & Nerve, 56(3), 505-509. https://doi.org/10.1002/mus.25509
Gonzalez AM, et al. Muscle Activation During Resistance Exercise at 70% and 90% 1-repetition Maximum in Resistance-trained Men. Muscle Nerve. 2017;56(3):505-509. PubMed PMID: 27935085.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Muscle activation during resistance exercise at 70% and 90% 1-repetition maximum in resistance-trained men. AU - Gonzalez,Adam M, AU - Ghigiarelli,Jamie J, AU - Sell,Katie M, AU - Shone,Edward W, AU - Kelly,Christopher F, AU - Mangine,Gerald T, Y1 - 2017/04/02/ PY - 2016/08/05/received PY - 2016/10/26/revised PY - 2016/12/05/accepted PY - 2016/12/10/pubmed PY - 2017/9/12/medline PY - 2016/12/10/entrez KW - EMG KW - electromyography KW - intensity KW - muscle activation KW - muscle activity KW - resistance training SP - 505 EP - 509 JF - Muscle & nerve JO - Muscle Nerve VL - 56 IS - 3 N2 - INTRODUCTION: Muscle activation was investigated during resistance exercise with 2 relatively high-intensity loads. METHODS: Ten resistance-trained men performed the leg press exercise to repetition failure: a set at 70% of 1-repetition maximum (1RM) and a set at 90% of 1RM. Surface electromyography (EMG) was used to assess peak and mean muscle activation of the vastus lateralis, rectus femoris, and vastus medialis. RESULTS: Peak and mean EMG remained greater at 90% than 70% 1RM across all repetitions (P = 0.03 and P = 0.02, respectively). Main effects for trial were also significant for mean EMG activity of the final common repetitions (P = 0.03) favoring 90% 1RM; however, peak EMG activity was similar during the final common repetitions of the 70% and 90% 1RM sets. CONCLUSIONS: Across all repetitions, 90% 1RM appears to produce greater muscle activation during the leg press exercise, but similar peak EMG was observed during the final common repetitions of each set. Muscle Nerve 56: 505-509, 2017. SN - 1097-4598 UR - https://www.unboundmedicine.com/medline/citation/27935085/Muscle_activation_during_resistance_exercise_at_70_and_90_1_repetition_maximum_in_resistance_trained_men_ L2 - https://doi.org/10.1002/mus.25509 DB - PRIME DP - Unbound Medicine ER -