Effects of Different Wearable Resistance Placements on Running Stability
Arunee Promsri1, Siriyakorn Deedphimai1, Petradda Promthep1
1Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand.
Sports (Basel, Switzerland)
|February 23, 2024
Summary
Wearing loads on the lower legs improves running stability by enhancing side-to-side dynamic stability. This finding offers valuable insights for optimizing running training programs.
Area of Science:
- Biomechanics
- Sports Science
- Human Movement Analysis
Background:
- Running stability is critical for performance.
- Wearable equipment with external loads may influence running stability.
- Understanding load effects on stability is essential for training.
Purpose of the Study:
- To investigate how wearable equipment with external loads on different body parts affects running stability.
- To determine the impact of load distribution on local dynamic stability during running.
Main Methods:
- Fifteen recreational male runners participated in treadmill running trials.
- Loads equivalent to 10% of body weight were applied to forearms, lower legs, trunk, or a combination.
- A smartphone sensor recorded accelerations at the lumbar spine (L5).
- The largest Lyapunov exponent (LyE) measured local dynamic stability.
Main Results:
- Load distribution significantly affected mediolateral (ML) running stability.
- Loads on the lower legs resulted in a lower LyE_ML, indicating enhanced stability.
- This effect was significant compared to no load and loads on forearms, trunk, or combined segments.
Conclusions:
- Running with loads on the lower legs enhances side-to-side local dynamic stability.
- These findings provide practical insights for designing running training programs.
- Optimizing load placement can improve running performance and stability.
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