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Isometric Shoulder and Hip Strength Impact on Throwing Velocity and Reactive Strength
Recep Fatih Kayhan1, Esranur Terzi2, Serdar Bayrakdaroğlu3
1Faculty of Sports Science, Marmara University, Istanbul, Turkey.
International Journal of Sports Medicine
|July 31, 2024
Summary
Shoulder strength enhances throwing velocity in male handball players, while hip strength is crucial for reactive strength index. This highlights the importance of specific muscle group strength for performance in handball.
Area of Science:
- Sports Science
- Biomechanics
- Human Movement
Background:
- Handball performance relies on explosive movements and precise throwing.
- Understanding the relationship between muscle strength and performance metrics is vital for training optimization.
Purpose of the Study:
- To investigate the correlation between shoulder strength (extension-flexion, internal-external rotation) and throwing velocity in professional male handball players.
- To examine the link between hip strength (extension-flexion) and reactive strength index (vertical and horizontal) in the same cohort.
Main Methods:
- Isometric strength measurements of shoulder and hip muscles were taken.
- Throwing velocity (stable and dynamic) and reactive strength index (vertical and horizontal) were assessed.
- Statistical analysis, including R-squared values, was used to determine predictive relationships.
Main Results:
- Isometric shoulder strength significantly predicted both stable and dynamic throwing velocity (R² range: 0.27-0.73).
- Isometric hip strength significantly predicted both vertical and horizontal reactive strength index (R² range: 0.26-0.45).
Conclusions:
- Shoulder strength positively influences throwing velocity in handball players.
- Hip strength is a key determinant of the reactive strength index, impacting explosive power and stabilization.
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