The Influence of External Additional Loading on the Muscle Activity and Ground Reaction Forces during Gait
Bartłomiej Zagrodny1, Michał Ludwicki1, Wiktoria Wojnicz2
1Department of Automation, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Łódź University of Technology, 1/15 Stefanowskiego Str. 90-924 Łódź, Poland.
Applied Bionics and Biomechanics
|August 9, 2021
Summary
Carrying loads asymmetrically, like on one shoulder, increases muscle strain and alters body mechanics. This study highlights the risks, recommending avoidance of such practices for musculoskeletal health.
Area of Science:
- Biomechanics
- Human Movement Science
- Ergonomics
Background:
- Asymmetrical external loading is common despite being recognized as detrimental to the musculoskeletal system.
- Practices include carrying loads on one shoulder, in one hand, or with a strap across the torso.
Purpose of the Study:
- To investigate the effects of common asymmetrical load-carrying methods on muscle activity.
- To assess the influence of these methods on thermal patterns and ground reaction forces.
Main Methods:
- Utilized infrared thermography to evaluate muscle temperature distribution.
- Employed a pedobarographic force platform for ground reaction force and pressure measurements.
Main Results:
- Observed increased load-dependent asymmetry in torso temperature distribution.
- Detected significant influence of asymmetrical external loading on ground reaction forces.
Conclusions:
- Asymmetrical load carrying should be avoided to mitigate musculoskeletal risks.
- Identified specific carrying methods as potentially less or more harmful, informing safer practices.
