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Updated: Jan 20, 2026
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Importance of Jumping Ability in Handball Throwing Speed and Accuracy
Published on: April 4, 2025
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Relationship between workload and throwing injury in varsity baseball players
1Medstar Georgetown University Hospital, Physical Medicine & Rehabilitation Department, 3800 Reservoir Road NW, Bles Bldg, Room CG12, Washington, DC, 20007, USA.
Summary
High acute-to-chronic valgus workload ratio (ACVR) significantly increases injury risk in baseball players. Athletes with ACVR above 1.27 were 14.9 times more likely to sustain injuries.
Area of Science:
- Sports Medicine
- Biomechanics
- Baseball Analytics
Background:
- Baseball players are susceptible to various injuries, particularly those related to throwing.
- Understanding workload management is crucial for injury prevention in elite athletes.
- The acute-to-chronic workload ratio (ACVR) is a metric used to assess training load, but its relationship with injury in baseball is not well-established.
Purpose of the Study:
- To conduct the first analysis of the relationship between ACVR and injury occurrence in baseball.
- To investigate if ACVR can predict injury risk in elite baseball players.
Main Methods:
- An observational study was conducted over six months with 18 elite male baseball players.
- Players wore motusTHROW™ sleeves and sensors to capture throwing data, including ACVR.
- Injuries were recorded throughout the pre-season and regular season.
Main Results:
- Ten injuries were recorded, with six being throwing-related.
- Five of the six throwing-related injuries occurred when ACVR was above 1.27 (75th percentile).
- Logistic regression showed a significant relationship between ACVR and injury (p < .05), with an odds ratio of 15.2 and risk ratio of 14.9.
Conclusions:
- High ACVR is significantly associated with an increased risk of injury in baseball players.
- ACVR values exceeding 1.27 may indicate a heightened risk for throwing-related injuries.
- This study highlights the importance of monitoring ACVR for injury prevention strategies in baseball.
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