Muscle-specific economy of force generation and efficiency of work production during human running
Human running features a spring-like interaction of body and ground, enabled by elastic tendons that store mechanical energy and facilitate muscle operating conditions to minimize the metabolic cost. By experimentally assessing the operating conditions of two important muscles for running, the soleu...
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eLife Sciences Publications Ltd
2021
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oai:doaj.org-article:34380fb1d0b04308996feb31ca710f4d2021-11-15T07:20:17ZMuscle-specific economy of force generation and efficiency of work production during human running10.7554/eLife.671822050-084Xe67182https://doaj.org/article/34380fb1d0b04308996feb31ca710f4d2021-09-01T00:00:00Zhttps://elifesciences.org/articles/67182https://doaj.org/toc/2050-084XHuman running features a spring-like interaction of body and ground, enabled by elastic tendons that store mechanical energy and facilitate muscle operating conditions to minimize the metabolic cost. By experimentally assessing the operating conditions of two important muscles for running, the soleus and vastus lateralis, we investigated physiological mechanisms of muscle work production and muscle force generation. We found that the soleus continuously shortened throughout the stance phase, operating as work generator under conditions that are considered optimal for work production: high force-length potential and high enthalpy efficiency. The vastus lateralis promoted tendon energy storage and contracted nearly isometrically close to optimal length, resulting in a high force-length-velocity potential beneficial for economical force generation. The favorable operating conditions of both muscles were a result of an effective length and velocity-decoupling of fascicles and muscle-tendon unit, mostly due to tendon compliance and, in the soleus, marginally by fascicle rotation.Sebastian BohmFalk MersmannAlessandro SantuzArno SchrollAdamantios ArampatziseLife Sciences Publications Ltdarticleforce-length and force-velocity relationshipenthalpy-velocity relationshiplength- and velocity-decouplingtendon elasticitymetabolic cost of runningsoleus muscleMedicineRScienceQBiology (General)QH301-705.5ENeLife, Vol 10 (2021) |
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DOAJ |
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DOAJ |
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EN |
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force-length and force-velocity relationship enthalpy-velocity relationship length- and velocity-decoupling tendon elasticity metabolic cost of running soleus muscle Medicine R Science Q Biology (General) QH301-705.5 |
| spellingShingle |
force-length and force-velocity relationship enthalpy-velocity relationship length- and velocity-decoupling tendon elasticity metabolic cost of running soleus muscle Medicine R Science Q Biology (General) QH301-705.5 Sebastian Bohm Falk Mersmann Alessandro Santuz Arno Schroll Adamantios Arampatzis Muscle-specific economy of force generation and efficiency of work production during human running |
| description |
Human running features a spring-like interaction of body and ground, enabled by elastic tendons that store mechanical energy and facilitate muscle operating conditions to minimize the metabolic cost. By experimentally assessing the operating conditions of two important muscles for running, the soleus and vastus lateralis, we investigated physiological mechanisms of muscle work production and muscle force generation. We found that the soleus continuously shortened throughout the stance phase, operating as work generator under conditions that are considered optimal for work production: high force-length potential and high enthalpy efficiency. The vastus lateralis promoted tendon energy storage and contracted nearly isometrically close to optimal length, resulting in a high force-length-velocity potential beneficial for economical force generation. The favorable operating conditions of both muscles were a result of an effective length and velocity-decoupling of fascicles and muscle-tendon unit, mostly due to tendon compliance and, in the soleus, marginally by fascicle rotation. |
| format |
article |
| author |
Sebastian Bohm Falk Mersmann Alessandro Santuz Arno Schroll Adamantios Arampatzis |
| author_facet |
Sebastian Bohm Falk Mersmann Alessandro Santuz Arno Schroll Adamantios Arampatzis |
| author_sort |
Sebastian Bohm |
| title |
Muscle-specific economy of force generation and efficiency of work production during human running |
| title_short |
Muscle-specific economy of force generation and efficiency of work production during human running |
| title_full |
Muscle-specific economy of force generation and efficiency of work production during human running |
| title_fullStr |
Muscle-specific economy of force generation and efficiency of work production during human running |
| title_full_unstemmed |
Muscle-specific economy of force generation and efficiency of work production during human running |
| title_sort |
muscle-specific economy of force generation and efficiency of work production during human running |
| publisher |
eLife Sciences Publications Ltd |
| publishDate |
2021 |
| url |
https://doaj.org/article/34380fb1d0b04308996feb31ca710f4d |
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| _version_ |
1718428487386136576 |