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Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings
Small differences in turn cycle structure, invisible to the naked eye, could be decisive in improving descent performance. The aim of this study was to assess the influence of turn cycle structure on the performance of elite alpine skiers using an inertial measurement unit (IMU) in different slalom...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838443/ https://www.ncbi.nlm.nih.gov/pubmed/35161648 http://dx.doi.org/10.3390/s22030902 |
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author | Pérez-Chirinos Buxadé, Carla Padullés Riu, Josep Maria Gavaldà Castet, Dani Trabucchi, Michela Fernández-Valdés, Bruno Tuyà Viñas, Sílvia Moras Feliu, Gerard |
author_facet | Pérez-Chirinos Buxadé, Carla Padullés Riu, Josep Maria Gavaldà Castet, Dani Trabucchi, Michela Fernández-Valdés, Bruno Tuyà Viñas, Sílvia Moras Feliu, Gerard |
author_sort | Pérez-Chirinos Buxadé, Carla |
collection | PubMed |
description | Small differences in turn cycle structure, invisible to the naked eye, could be decisive in improving descent performance. The aim of this study was to assess the influence of turn cycle structure on the performance of elite alpine skiers using an inertial measurement unit (IMU) in different slalom (SL) course settings. Four SL courses were set: a flat-turned (FT), a steep-turned (ST), a flat-straighter (FS) and a steep-straighter (SS). Five elite alpine skiers (21.2 ± 3.3 years, 180.2 ± 5.6 cm, 72.8 ± 6.6 kg) completed several runs at maximum speed for each SL course. A total of 77 runs were obtained. Fast total times correlate with a longer initiation (INI) time in FT, a shorter steering time out of the turn (STE(OUT)) in the FT and FS and a shorter total steering time (STE(IN+OUT)) in the FT and SS courses. The linear mixed model used for the analysis revealed that in the FT-course for each second increase in the INI time, the total time is reduced by 0.45 s, and for every one-second increase in the STE(OUT) and STE(IN+OUT) times, the total time increases by 0.48 s and 0.31 s, respectively. Thus, to enhance descent performance, the skier should lengthen the INI time and shorten the STE(OUT) and STE(IN+OUT) time. Future studies could use an IMU to detect turn phases and analyze them using the other built-in sensors. |
format | Online Article Text |
id | pubmed-8838443 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-88384432022-02-13 Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings Pérez-Chirinos Buxadé, Carla Padullés Riu, Josep Maria Gavaldà Castet, Dani Trabucchi, Michela Fernández-Valdés, Bruno Tuyà Viñas, Sílvia Moras Feliu, Gerard Sensors (Basel) Article Small differences in turn cycle structure, invisible to the naked eye, could be decisive in improving descent performance. The aim of this study was to assess the influence of turn cycle structure on the performance of elite alpine skiers using an inertial measurement unit (IMU) in different slalom (SL) course settings. Four SL courses were set: a flat-turned (FT), a steep-turned (ST), a flat-straighter (FS) and a steep-straighter (SS). Five elite alpine skiers (21.2 ± 3.3 years, 180.2 ± 5.6 cm, 72.8 ± 6.6 kg) completed several runs at maximum speed for each SL course. A total of 77 runs were obtained. Fast total times correlate with a longer initiation (INI) time in FT, a shorter steering time out of the turn (STE(OUT)) in the FT and FS and a shorter total steering time (STE(IN+OUT)) in the FT and SS courses. The linear mixed model used for the analysis revealed that in the FT-course for each second increase in the INI time, the total time is reduced by 0.45 s, and for every one-second increase in the STE(OUT) and STE(IN+OUT) times, the total time increases by 0.48 s and 0.31 s, respectively. Thus, to enhance descent performance, the skier should lengthen the INI time and shorten the STE(OUT) and STE(IN+OUT) time. Future studies could use an IMU to detect turn phases and analyze them using the other built-in sensors. MDPI 2022-01-25 /pmc/articles/PMC8838443/ /pubmed/35161648 http://dx.doi.org/10.3390/s22030902 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pérez-Chirinos Buxadé, Carla Padullés Riu, Josep Maria Gavaldà Castet, Dani Trabucchi, Michela Fernández-Valdés, Bruno Tuyà Viñas, Sílvia Moras Feliu, Gerard Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title | Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title_full | Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title_fullStr | Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title_full_unstemmed | Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title_short | Influence of Turn Cycle Structure on Performance of Elite Alpine Skiers Assessed through an IMU in Different Slalom Course Settings |
title_sort | influence of turn cycle structure on performance of elite alpine skiers assessed through an imu in different slalom course settings |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838443/ https://www.ncbi.nlm.nih.gov/pubmed/35161648 http://dx.doi.org/10.3390/s22030902 |
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