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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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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 |
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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 |
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