Relationship of shoulder internal and external rotation peak force and rate of force development to throwing velocity in high school and collegiate pitchers.

Autor: Job TDW 3rd; Athlete Training and Health, 23910 Katy Freeway Katy, TX 77494, USA(1); Sports Performance Research Institute New Zealand, Mail Code P-1, Private Bag 92006, Auckland 1142, New Zealand. Electronic address: trey.job2012@gmail.com., Cross MR; Sports Performance Research Institute New Zealand, Mail Code P-1, Private Bag 92006, Auckland 1142, New Zealand. Electronic address: matthew.cross@aut.ac.nz., Cronin JB; Athlete Training and Health, 23910 Katy Freeway Katy, TX 77494, USA(1); Sports Performance Research Institute New Zealand, Mail Code P-1, Private Bag 92006, Auckland 1142, New Zealand. Electronic address: john.cronin@aut.ac.nz.
Jazyk: angličtina
Zdroj: Journal of biomechanics [J Biomech] 2024 Nov; Vol. 176, pp. 112339. Date of Electronic Publication: 2024 Sep 21.
DOI: 10.1016/j.jbiomech.2024.112339
Abstrakt: The purpose of this research was to characterize the difference between high school (HS) and collegiate pitcher's throwing velocity, shoulder internal (IR) and external rotator (ER) maximum strength (Fmax) and rate of force development (RFD) and explore relationships between these measures. Competitive HS and collegiate pitchers (n = 26) participated in a single session assessment in which shoulder rotator isometric Fmax and RFD were quantified via a portable strain gauge device and throwing velocity via radar. Paired t-tests, stepwise linear regression models and correlational analyses were used to answer the questions of interest. No significant differences (p > 0.05) in pitching velocity were observed between HS and collegiate pitchers, and all pitchers were pooled into one sample for subsequent analyses. For both IR and ER models, the explained variance of Fmax with throwing velocity was small (R 2  = 0.12-0.13). RFD and arm length did not contribute to the models. Large correlations (r ≥ 0.50; p < 0.001) were observed between IR and ER for Fmax and RFD measures, as well as between Fmax and RFD for IR and ER. In terms of throwing velocity, having strong IR and ER Fmax capabilities would seem more important than the ability to express force quickly in this cohort.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: John Cronin is an inventor and shareholder in the strain gauge technology used in this study. The results of the present study do not constitute endorsement of the product by authors.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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