Journal article
The relationship among lead knee extension, fastball velocity and elbow torque in professional baseball pitchers
SPORTS BIOMECHANICS
19 Mar 2022
PMID: 35297732
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The purpose of this study was to investigate potential differences in lead knee extension velocity, elbow varus torque and lead knee extension (the change in lead knee flexion from foot contact to ball release) in high and low velocity professional pitchers. Three-dimensional motion capture (480 Hz) was used to assess 322 professional pitchers. T-test were used to compare the two groups and multiple linear regression analyses were performed on all pitchers (n = 322). The high-velocity group (n = 99; 40.3 +/- 0.9m/s) had greater lead knee extension (17 +/- 13 vs 5 +/- 14 degrees, p < 0.001, g = 0.9), lead knee extension velocity (419 +/- 135 vs 297 +/- 121 degrees/s, p < 0.001, g = 0.9) and elbow varus torque (91.1 +/- 15.5 vs 84.0 +/- 14.7 Nm, p < 0.001, g = 0.5) compared to the low-velocity group (n = 88; 36.1 +/- 1.2 m/s). Lead knee extension (R-2 = 0.352, p < 0.001) and lead knee extension velocity (R-2 = 0.326, p < 0.001) were found to be positive predictors of ball velocity but not elbow varus torque (p = 0.807). Instructing professional pitchers to utilise a lead leg bracing technique that facilitates increased lead knee extension can contribute to faster ball velocity, but most likely results from a combination of other mechanics.
Metrics
Details
- Title
- The relationship among lead knee extension, fastball velocity and elbow torque in professional baseball pitchers
- Publication Details
- SPORTS BIOMECHANICS
- Publisher
- ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD; ABINGDON
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000770293100001
- Scopus ID
- 2-s2.0-85126727990
- Other Identifier
- 991021861165104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Biomedical
- Sport Sciences