下肢负重时代谢功率对跑步的反应。
Metabolic power response to added mass on the lower extremities during running.
机构信息
Industrial Engineering and Management Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
Integrative Physiology Department, University of Colorado, Boulder, CO, USA.
出版信息
Appl Ergon. 2024 Jan;114:104109. doi: 10.1016/j.apergo.2023.104109. Epub 2023 Aug 31.
BACKGROUND
Wearable exoskeletal devices can enhance locomotor performance, but their mass results in a metabolic penalty. Previous studies have quantified the metabolic cost of running with added mass on the feet, but less is known about the effects of adding mass to the thigh and shank segments.
AIM
To quantify the metabolic cost of running with additional leg mass.
METHODS
15 participants (7 F, 8 M) completed treadmill running trials (3 m/s) normally and with lead mass (300-1350 g) attached to either the thigh, shank, or foot, bilaterally. We measured metabolic power using expired gas analysis.
RESULTS
Per 1000 g of added mass per leg, gross metabolic power increased by approximately 16% (foot) and 11% (shank) for females which was slightly greater than the 11% and 8% increases for males, respectively. For thigh loading, metabolic power increased by just 4% per 1000 g in both sexes.
CONCLUSION
Adding mass more distally on the leg increases the metabolic cost of running to a greater extent. For the same absolute added mass on the foot or shank, metabolic power increases more in females.
背景
可穿戴外骨骼设备可以提高运动表现，但它们的质量会导致代谢惩罚。先前的研究已经量化了在脚部增加质量对跑步代谢成本的影响，但对于在大腿和小腿部位增加质量的影响知之甚少。
目的
量化腿部附加质量对跑步代谢成本的影响。
方法
15 名参与者（7 名女性，8 名男性）分别在正常情况下和双侧大腿、小腿或脚部附加 300-1350g 铅块的情况下完成跑步机跑步试验（3m/s）。我们使用呼出气体分析来测量代谢功率。
结果
对于每个附加 1000g 腿部质量，女性的总代谢功率分别增加了约 16%（脚部）和 11%（小腿），略高于男性的分别增加 11%和 8%。对于大腿负重，男女的代谢功率分别仅增加了每 1000g 增加 4%。
结论
腿部附加质量越远，跑步的代谢成本增加得越多。对于脚部或小腿上相同的绝对附加质量，女性的代谢功率增加更多。
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