Cargando…

Running humans attain optimal elastic bounce in their teens

In an ideal elastic bounce of the body, the time during which mechanical energy is released during the push equals the time during which mechanical energy is absorbed during the brake, and the maximal upward velocity attained by the center of mass equals the maximal downward velocity. Deviations fro...

Descripción completa

Detalles Bibliográficos
Autores principales: Legramandi, Mario A., Schepens, Bénédicte, Cavagna, Giovanni A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575582/
https://www.ncbi.nlm.nih.gov/pubmed/23419705
http://dx.doi.org/10.1038/srep01310
_version_ 1782259753194356736
author Legramandi, Mario A.
Schepens, Bénédicte
Cavagna, Giovanni A.
author_facet Legramandi, Mario A.
Schepens, Bénédicte
Cavagna, Giovanni A.
author_sort Legramandi, Mario A.
collection PubMed
description In an ideal elastic bounce of the body, the time during which mechanical energy is released during the push equals the time during which mechanical energy is absorbed during the brake, and the maximal upward velocity attained by the center of mass equals the maximal downward velocity. Deviations from this ideal model, prolonged push duration and lower upward velocity, have found to be greater in older than in younger adult humans. However it is not known how similarity to the elastic bounce changes during growth and whether an optimal elastic bounce is attained at some age. Here we show that similarity with the elastic bounce is minimal at 2 years and increases with age attaining a maximum at 13-16 years, concomitant with a mirror sixfold decrease of the impact deceleration peak following collision of the foot with the ground. These trends slowly reverse during the course of the lifespan.
format Online
Article
Text
id pubmed-3575582
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-35755822013-02-19 Running humans attain optimal elastic bounce in their teens Legramandi, Mario A. Schepens, Bénédicte Cavagna, Giovanni A. Sci Rep Article In an ideal elastic bounce of the body, the time during which mechanical energy is released during the push equals the time during which mechanical energy is absorbed during the brake, and the maximal upward velocity attained by the center of mass equals the maximal downward velocity. Deviations from this ideal model, prolonged push duration and lower upward velocity, have found to be greater in older than in younger adult humans. However it is not known how similarity to the elastic bounce changes during growth and whether an optimal elastic bounce is attained at some age. Here we show that similarity with the elastic bounce is minimal at 2 years and increases with age attaining a maximum at 13-16 years, concomitant with a mirror sixfold decrease of the impact deceleration peak following collision of the foot with the ground. These trends slowly reverse during the course of the lifespan. Nature Publishing Group 2013-02-19 /pmc/articles/PMC3575582/ /pubmed/23419705 http://dx.doi.org/10.1038/srep01310 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Legramandi, Mario A.
Schepens, Bénédicte
Cavagna, Giovanni A.
Running humans attain optimal elastic bounce in their teens
title Running humans attain optimal elastic bounce in their teens
title_full Running humans attain optimal elastic bounce in their teens
title_fullStr Running humans attain optimal elastic bounce in their teens
title_full_unstemmed Running humans attain optimal elastic bounce in their teens
title_short Running humans attain optimal elastic bounce in their teens
title_sort running humans attain optimal elastic bounce in their teens
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575582/
https://www.ncbi.nlm.nih.gov/pubmed/23419705
http://dx.doi.org/10.1038/srep01310
work_keys_str_mv AT legramandimarioa runninghumansattainoptimalelasticbounceintheirteens
AT schepensbenedicte runninghumansattainoptimalelasticbounceintheirteens
AT cavagnagiovannia runninghumansattainoptimalelasticbounceintheirteens