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Elbow joint fatigue and bench-press training.
Yen-Po Huang1, You-Li Chou, Feng-Chun Chen
1Department of Engineering Science, National Cheng-Kung University, Tainan, Taiwan.
Journal of Athletic Training
|February 19, 2014
Summary
Fatigue during bench-press exercises increases elbow-joint forces and moments, potentially raising injury risk. Careful control of repetitions is crucial for safe training and rehabilitation programs.
Area of Science:
- Sports Medicine
- Biomechanics
- Exercise Physiology
Background:
- Bench-press exercises are fundamental for upper extremity strength and endurance.
- Existing research explores bench-press variations but lacks comprehensive data on fatigue's impact on elbow joint kinetics.
- Understanding fatigue effects is crucial for optimizing training and preventing injuries.
Purpose of the Study:
- To investigate the effects of fatigue on elbow joint kinetics and myodynamic performance during bench-press training.
- To quantify changes in joint forces, moments, and muscle strength under fatiguing conditions.
Main Methods:
- A controlled laboratory study involving 18 healthy male students.
- Participants performed bench-press exercises to volitional fatigue.
- Key outcome measures included repetitions, cycle time, myodynamic decline rate, elbow-joint force, and elbow-joint moment.
Main Results:
- Bench-press exercise cycle time increased significantly with fatigue (2.1s to 2.58s).
- Medial-lateral force and internal-external moment on the elbow joint increased as participants fatigued.
- Significant reductions in elbow extension-flexion and forearm supination-pronation strength were observed.
Conclusions:
- Fatigue during bench-press exercises elevates elbow joint loading, potentially increasing injury risk.
- Clinicians should carefully manage the number of repetitions in bench-press regimens for athletic training, muscle strengthening, and rehabilitation.
- Implementing controlled repetition limits can mitigate increased joint stress and promote safer training practices.
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