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A comparison between free-weight and isokinetic bench pressing.
Med Sci Sports Exerc. 1985 Jun; 17(3):344-53.MS

Abstract

The purpose of the study was to evaluate selected parameters describing performance characteristics of a free-weight and isokinetic bench press. A secondary purpose was an attempt to clarify the technique requirements essential for a successful lift. Parameters describing the free-weight condition were generated from cinematographic data (150 fps) for five trials each at 90 and 75% of the subject's maximal performance (1RM). Isokinetic data were obtained from an instrumented Cybex Power Bench Press at two speeds corresponding to the average speeds for the free-weight conditions. Despite differences, accommodation appeared to occur for both methods when the lifts were performed maximally. A "sticking region" was defined as the portion of the free-weight activity when the subjects' force application was less than the weight of the bar. No significant difference (P less than 0.05) was observed between the 90% 1RM (26.02%) and 75% 1RM (26.94%) mean relative time values for these regions. For the Cybex device, the percentage of the activity which was isokinetic was longer for the slower speeds of rotation (0.47 rad X s-1 = 70%) and steadily decreased until the movement was only 50% isokinetic at 1.74 rad X s-1. The observed relationships between applied force-time data along with anatomical considerations suggest an ideal technique for the lift.

Authors

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Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

4021780

Citation

Lander, J E., et al. "A Comparison Between Free-weight and Isokinetic Bench Pressing." Medicine and Science in Sports and Exercise, vol. 17, no. 3, 1985, pp. 344-53.
Lander JE, Bates BT, Sawhill JA, et al. A comparison between free-weight and isokinetic bench pressing. Med Sci Sports Exerc. 1985;17(3):344-53.
Lander, J. E., Bates, B. T., Sawhill, J. A., & Hamill, J. (1985). A comparison between free-weight and isokinetic bench pressing. Medicine and Science in Sports and Exercise, 17(3), 344-53.
Lander JE, et al. A Comparison Between Free-weight and Isokinetic Bench Pressing. Med Sci Sports Exerc. 1985;17(3):344-53. PubMed PMID: 4021780.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A comparison between free-weight and isokinetic bench pressing. AU - Lander,J E, AU - Bates,B T, AU - Sawhill,J A, AU - Hamill,J, PY - 1985/6/1/pubmed PY - 1985/6/1/medline PY - 1985/6/1/entrez SP - 344 EP - 53 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 17 IS - 3 N2 - The purpose of the study was to evaluate selected parameters describing performance characteristics of a free-weight and isokinetic bench press. A secondary purpose was an attempt to clarify the technique requirements essential for a successful lift. Parameters describing the free-weight condition were generated from cinematographic data (150 fps) for five trials each at 90 and 75% of the subject's maximal performance (1RM). Isokinetic data were obtained from an instrumented Cybex Power Bench Press at two speeds corresponding to the average speeds for the free-weight conditions. Despite differences, accommodation appeared to occur for both methods when the lifts were performed maximally. A "sticking region" was defined as the portion of the free-weight activity when the subjects' force application was less than the weight of the bar. No significant difference (P less than 0.05) was observed between the 90% 1RM (26.02%) and 75% 1RM (26.94%) mean relative time values for these regions. For the Cybex device, the percentage of the activity which was isokinetic was longer for the slower speeds of rotation (0.47 rad X s-1 = 70%) and steadily decreased until the movement was only 50% isokinetic at 1.74 rad X s-1. The observed relationships between applied force-time data along with anatomical considerations suggest an ideal technique for the lift. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/4021780/A_comparison_between_free_weight_and_isokinetic_bench_pressing_ L2 - https://journals.lww.com/4021780.pmid DB - PRIME DP - Unbound Medicine ER -