Abstract
Objectives To analyze the changes of physiological and biomechanical signals and their relations to fatigue in treadmill walking with backpack load. Methods Cardiopulmonary function parameters, shoulder force, trunk pressure, and perceived fatigues are sampled simultaneously with six healthy men during 30-min treadmill walking experiments under five different conditions of backpack loads. Results HR, BR, VE, and VO2 gradually increased as the load increased, and the increasing rate became bigger during 37–39 kg tests. Shoulder force and shoulder pressure were strongly correlated with load. Pressures at waist and back regions were influenced by the tension degree of waist and chest belts. The 37-kg load was the turning point of human cardiopulmonary function starting working overload. The perceived fatigues in shoulder and whole body are more intense than those of back and waist. Conclusions The coordinate ability of cardiopulmonary system should be considered when studying treadmill walking with loads greater than 37 kg. Shoulder force and pressure are considered as main factors for fatigue evaluation.
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Zheng, J., Shen, Y., Li, C., Ren, P., Guo, Y. (2015). The Changes of Physiological and Biomechanical Indices and Their Relations to Fatigue During Treadmill Walking with Different Loads. In: Long, S., Dhillon, B.S. (eds) Proceedings of the 14th International Conference on Man–Machine–Environment System Engineering. MMESE 2014. Lecture Notes in Electrical Engineering, vol 318. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44067-4_3
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DOI: https://doi.org/10.1007/978-3-662-44067-4_3
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