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Is Workload Associated With Oblique Injuries in Professional Baseball Players?
Peter N Chalmers1, Kathryn Mcelheny2, John D'Angelo3
1Department of Orthopaedic Surgery, University of Utah, Salt Lake City, Utah, USA.
Orthopaedic Journal of Sports Medicine
|June 17, 2024
Summary
High player workload increases oblique strain risk in professional baseball. Chronic high workload, including more innings pitched/fielded and plate appearances, is more predictive than acute increases.
Area of Science:
- Sports Medicine
- Baseball Analytics
- Injury Prevention
Background:
- Oblique strains are frequent injuries in professional baseball.
- The relationship between player workload and oblique strains is not well understood.
Purpose of the Study:
- To investigate if player workload is a significant risk factor for oblique strains in professional baseball.
- To test the hypothesis that reduced rest and increased game participation (innings pitched/fielded, batters faced/plate appearances) elevate oblique strain risk.
Main Methods:
- A case-control study design (Level of evidence, 3) was employed.
- Data from 2011-2017 on professional baseball players with oblique strains were analyzed using the MLB Health and Injury Tracking System.
- Player workload metrics (rest days, innings pitched/fielded, batters faced/plate appearances) were compared between injured players and a control group.
Main Results:
- Increased innings pitched and batters faced correlated with oblique strains in pitchers (P < .001).
- Fewer rest days, more innings fielded, and more plate appearances correlated with oblique strains in position players (P < .001).
- Pitchers with ≥7 innings/game had a 2.4-fold increased risk; position players with >4 plate appearances/game had a 2.1-fold increased risk.
Conclusions:
- Player workload is demonstrably associated with an elevated risk of oblique injuries in professional baseball.
- Sustained high workload over time is a stronger predictor of oblique strains than acute workload spikes.
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