使用外骨去除能量可以降低行走的代谢成本
Michael Shepertycky1, Sarah Burton2, Andrew Dickson2
1Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON K7L 3N6, Canada. 6mys@queensu.ca ql3@queensu.ca.
概括
这项研究展示了一种外骨, 通过在摇摆阶段去除动能来降低步行代谢成本. 这项创新还产生了电力,突出显示了能源消耗的时间和规模的重要性.
科学领域:
- 生物力学
- 机器人技术
- 人与计算机的互动
背景情况:
- 由于进化优化, 人类行走非常节能.
- 外骨面临进一步降低代谢成本的挑战.
- 现有的外骨往往增加或储存/返回能量以减少代谢支出.
研究的目的:
- 通过移除动能来减少外骨的代谢成本.
- 评估外骨的能量转化效率.
- 确定能量去除时间和大小对降低代谢成本的影响.
主要方法:
- 使用一种新型的外骨架, 旨在在步行周期的摇摆阶段去除动能.
- 在健康的男性参与者中测量代谢成本的降低.
- 量化了从被移除的动能产生的电力.
- 通过比较两个不同的负载形状来分析时间和大小的影响.
主要成果:
- 在健康的男性使用者中,外骨降低了2. 5 ± 0. 8%的代谢成本.
- 该系统将被移除的动能转换为0.25 ± 0.02瓦的电能.
- 证明能量去除的时间和大小都是代谢节约的关键因素.
结论:
- 在摇摆阶段战略性去除动能是降低步行代谢成本的有效策略.
- 这种方法为外骨架辅助的运动提供了一种新的方法,有可能提高效率并使能量收获成为可能.
- 优化对外骨能量清除的控制是最大化代谢效益的关键.
相关概念视频
Production Efficiency
17.3K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
17.3K
Metabolic Rate
781
The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
781
Energy to Drive Translocation
2.4K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
2.4K
Activation Energy
84.6K
Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...
84.6K
Energy Budgets
10.0K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
10.0K
What is Metabolism?
123.5K
Overview
123.5K


