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A biomechanical analysis of the sticking region in the bench press.
Med Sci Sports Exerc. 1989 Aug; 21(4):450-62.MS

Abstract

The performance of ten elite powerlifters were analyzed in a simulated competition environment using three-dimensional cinematography and surface electromyography while bench pressing approximately 80% of maximum, a maximal load, and an unsuccessful supramaximal attempt. The resultant moment arm (from the sagittal and transverse planes) of the weight about the shoulder axis decreased throughout the upward movement of the bar. The resultant moment arm of the weight about the elbow axis decreased throughout the initial portion of the ascent of the bar, recording a minimum value during the sticking region, and subsequently increased throughout the remainder of the ascent of the bar. The electromyograms produced by the prime mover muscles (sternal portion of pectoralis major, anterior deltoid, long head of triceps brachii) achieved maximal activation at the commencement of the ascent phase of the lift and maintained this level essentially unchanged throughout the upward movement of the bar. The sticking region, therefore, did not appear to be caused by an increase in the moment arm of the weight about the shoulder or elbow joints or by a minimization of muscular activity during this region. A possible mechanism which envisages the sticking region as a force-reduced transition phase between a strain energy-assisted acceleration phase and a mechanically advantageous maximum strength region is postulated.

Authors+Show Affiliations

Department of Human Movement and Recreation Studies, University of Western Australia, Nedlands.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

2779404

Citation

Elliott, B C., et al. "A Biomechanical Analysis of the Sticking Region in the Bench Press." Medicine and Science in Sports and Exercise, vol. 21, no. 4, 1989, pp. 450-62.
Elliott BC, Wilson GJ, Kerr GK. A biomechanical analysis of the sticking region in the bench press. Med Sci Sports Exerc. 1989;21(4):450-62.
Elliott, B. C., Wilson, G. J., & Kerr, G. K. (1989). A biomechanical analysis of the sticking region in the bench press. Medicine and Science in Sports and Exercise, 21(4), 450-62.
Elliott BC, Wilson GJ, Kerr GK. A Biomechanical Analysis of the Sticking Region in the Bench Press. Med Sci Sports Exerc. 1989;21(4):450-62. PubMed PMID: 2779404.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A biomechanical analysis of the sticking region in the bench press. AU - Elliott,B C, AU - Wilson,G J, AU - Kerr,G K, PY - 1989/8/1/pubmed PY - 1989/8/1/medline PY - 1989/8/1/entrez SP - 450 EP - 62 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 21 IS - 4 N2 - The performance of ten elite powerlifters were analyzed in a simulated competition environment using three-dimensional cinematography and surface electromyography while bench pressing approximately 80% of maximum, a maximal load, and an unsuccessful supramaximal attempt. The resultant moment arm (from the sagittal and transverse planes) of the weight about the shoulder axis decreased throughout the upward movement of the bar. The resultant moment arm of the weight about the elbow axis decreased throughout the initial portion of the ascent of the bar, recording a minimum value during the sticking region, and subsequently increased throughout the remainder of the ascent of the bar. The electromyograms produced by the prime mover muscles (sternal portion of pectoralis major, anterior deltoid, long head of triceps brachii) achieved maximal activation at the commencement of the ascent phase of the lift and maintained this level essentially unchanged throughout the upward movement of the bar. The sticking region, therefore, did not appear to be caused by an increase in the moment arm of the weight about the shoulder or elbow joints or by a minimization of muscular activity during this region. A possible mechanism which envisages the sticking region as a force-reduced transition phase between a strain energy-assisted acceleration phase and a mechanically advantageous maximum strength region is postulated. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/2779404/A_biomechanical_analysis_of_the_sticking_region_in_the_bench_press_ L2 - https://journals.lww.com/2779404.pmid DB - PRIME DP - Unbound Medicine ER -