A1 Journal article (refereed)
Ankle and knee extensor muscle effort during locomotion in young and older athletes : Implications for understanding age-related locomotor decline (2020)


Kulmala, J.-P., Korhonen, M. T., Ruggiero, L., Kuitunen, S., Suominen, H., Heinonen, A., Mikkola, A., & Avela, J. (2020). Ankle and knee extensor muscle effort during locomotion in young and older athletes : Implications for understanding age-related locomotor decline. Scientific Reports, 10, Article 2801. https://doi.org/10.1038/s41598-020-59676-y


JYU authors or editors


Publication details

All authors or editors: Kulmala, Juha-Pekka; Korhonen, Marko T.; Ruggiero, Luca; Kuitunen, Sami; Suominen, Harri; Heinonen, Ari; Mikkola, Aki; Avela, Janne

Journal or series: Scientific Reports

eISSN: 2045-2322

Publication year: 2020

Volume: 10

Article number: 2801

Publisher: Nature Publishing Group

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1038/s41598-020-59676-y

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67919


Abstract

Age-related reduction in muscle force generation capacity is similarly evident across different lower limb muscle groups, yet decline in locomotor performance with age has been shown to depend primarily on reduced ankle extensor muscle function. To better understand why ageing has the largest detrimental effect on ankle joint function during locomotion, we examined maximal ankle and knee extensor force development during a two-leg hopping test in older and young men, and used these forces as a reference to calculate relative operating efforts for the knee and ankle extensors as participants walked, ran and sprinted. We found that, across locomotion modes in both age groups, ankle extensors operated at a greater relative effort compared to knee extensors; however, slightly less pronounced differences between ankle and knee extensor muscle efforts were present among older men, mainly due to a reduction in the ankle extensor force generation during locomotion modes. We consider these findings as evidence that reduced ankle push-off function in older age is driven by a tendency to keep ankle extensor effort during locomotion lower than it would otherwise be, which, in turn, may be an important self-optimisation strategy to prevent locomotor-induced fatigue of ankle extensor muscles.


Keywords: biomechanics; ankles; knees; muscles; ageing; ability to move


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1


Last updated on 2021-07-07 at 21:30