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Differences in throwing kinematics due to changes in run-up speed in javelin throwing
Mizuki Makino1, Koichi Nakayama2, Yuka Ando3
1Japan Institute of Sports Sciences, Tokyo, Japan - m.mzk1011@gmail.com.
The Journal of Sports Medicine and Physical Fitness
|October 3, 2024
Summary
Javelin throwers exhibit distinct joint movements during short run-up throws compared to full run-up throws. This study analyzed kinematic differences in javelin throwing techniques.
Area of Science:
- Biomechanics
- Sports Science
- Athletic Performance
Background:
- Short run-up throwing is common in javelin training, but its biomechanical differences from full run-up throwing remain unclear.
- Understanding these differences is crucial for optimizing training and performance.
Purpose of the Study:
- To investigate and clarify the kinematic distinctions between short run-up (Cross) and full run-up (Run) javelin throwing.
- Compare joint angles and throwing motions in two distinct javelin throwing conditions.
Main Methods:
- Twelve male javelin throwers participated, performing both Cross and Run throwing techniques.
- An optical motion capture system recorded marker coordinates from foot contact to release.
- Kinematic variables were calculated and compared between the two throwing conditions.
Main Results:
- Significant differences were observed in the joint angles of the left knee, trunk, and right shoulder between Cross and Run.
- These kinematic variations suggest distinct movement patterns for each throwing type.
Conclusions:
- The throwing motion in javelin throw differs significantly between short and full run-up techniques.
- These findings provide valuable insights for javelin throw training and technique refinement.
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