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Effects of Four Days Hiking on Postural Control
Hiking is a demanding form of exercise that may cause delayed responses of the postural muscles and a loss of somatosensory information, particularly when repeatedly performed for several days. These effects may negatively influence the postural control of hikers. Therefore, the aim of this study wa...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4406731/ https://www.ncbi.nlm.nih.gov/pubmed/25902060 http://dx.doi.org/10.1371/journal.pone.0123214 |
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author | Vieira, Marcus Fraga de Avelar, Ivan Silveira Silva, Maria Sebastiana Soares, Viviane Lobo da Costa, Paula Hentschel |
author_facet | Vieira, Marcus Fraga de Avelar, Ivan Silveira Silva, Maria Sebastiana Soares, Viviane Lobo da Costa, Paula Hentschel |
author_sort | Vieira, Marcus Fraga |
collection | PubMed |
description | Hiking is a demanding form of exercise that may cause delayed responses of the postural muscles and a loss of somatosensory information, particularly when repeatedly performed for several days. These effects may negatively influence the postural control of hikers. Therefore, the aim of this study was to investigate the effects of a four-day hike on postural control. Twenty-six adults of both sexes travelled 262 kilometers, stopping for lunch and resting in the early evening each day. Force platforms were used to collect center of pressure (COP) data at 100 Hz for 70 seconds before hiking started and immediately after arriving at the rest station each day. The COP time course data were analyzed according to global stabilometric descriptors, spectral analysis and structural descriptors using sway density curve (SDC) and stabilometric diffusion analysis (SDA). Significant increases were found for global variables in both the anterior-posterior and medial-lateral directions (COP sway area, COP total sway path, COP mean velocity, COP root mean square value and COP range). In the spectral analysis, only the 80% power frequency (F80) in the anterior-posterior direction showed a significant increase, reflecting the increase of the sway frequencies. The SDC revealed a significant increase in the mean distance between peaks (MD) and a significant decrease in the mean peak amplitudes (MP), suggesting that a larger torque amplitude is required for stabilization and that the postural stability is reduced. The SDA revealed a decrease in the long-term slope (Hl) and increases in the short-term (Ks) and the long-term (Kl) intercepts. We considered the likelihood that the presence of local and general fatigue, pain and related neuromuscular adaptations and somatosensory deficits may have contributed to these postural responses. Together, these results demonstrated that four days of hiking increased sway frequencies and deteriorated postural control in the standing position. |
format | Online Article Text |
id | pubmed-4406731 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-44067312015-05-07 Effects of Four Days Hiking on Postural Control Vieira, Marcus Fraga de Avelar, Ivan Silveira Silva, Maria Sebastiana Soares, Viviane Lobo da Costa, Paula Hentschel PLoS One Research Article Hiking is a demanding form of exercise that may cause delayed responses of the postural muscles and a loss of somatosensory information, particularly when repeatedly performed for several days. These effects may negatively influence the postural control of hikers. Therefore, the aim of this study was to investigate the effects of a four-day hike on postural control. Twenty-six adults of both sexes travelled 262 kilometers, stopping for lunch and resting in the early evening each day. Force platforms were used to collect center of pressure (COP) data at 100 Hz for 70 seconds before hiking started and immediately after arriving at the rest station each day. The COP time course data were analyzed according to global stabilometric descriptors, spectral analysis and structural descriptors using sway density curve (SDC) and stabilometric diffusion analysis (SDA). Significant increases were found for global variables in both the anterior-posterior and medial-lateral directions (COP sway area, COP total sway path, COP mean velocity, COP root mean square value and COP range). In the spectral analysis, only the 80% power frequency (F80) in the anterior-posterior direction showed a significant increase, reflecting the increase of the sway frequencies. The SDC revealed a significant increase in the mean distance between peaks (MD) and a significant decrease in the mean peak amplitudes (MP), suggesting that a larger torque amplitude is required for stabilization and that the postural stability is reduced. The SDA revealed a decrease in the long-term slope (Hl) and increases in the short-term (Ks) and the long-term (Kl) intercepts. We considered the likelihood that the presence of local and general fatigue, pain and related neuromuscular adaptations and somatosensory deficits may have contributed to these postural responses. Together, these results demonstrated that four days of hiking increased sway frequencies and deteriorated postural control in the standing position. Public Library of Science 2015-04-22 /pmc/articles/PMC4406731/ /pubmed/25902060 http://dx.doi.org/10.1371/journal.pone.0123214 Text en © 2015 Vieira et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Vieira, Marcus Fraga de Avelar, Ivan Silveira Silva, Maria Sebastiana Soares, Viviane Lobo da Costa, Paula Hentschel Effects of Four Days Hiking on Postural Control |
title | Effects of Four Days Hiking on Postural Control |
title_full | Effects of Four Days Hiking on Postural Control |
title_fullStr | Effects of Four Days Hiking on Postural Control |
title_full_unstemmed | Effects of Four Days Hiking on Postural Control |
title_short | Effects of Four Days Hiking on Postural Control |
title_sort | effects of four days hiking on postural control |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4406731/ https://www.ncbi.nlm.nih.gov/pubmed/25902060 http://dx.doi.org/10.1371/journal.pone.0123214 |
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