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Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction
The objectives of the present study were to examine the validity and reliability of the 10 Hz Johan GPS unit in assessing in-line movement and change of direction. The validity was tested against the criterion measure of 200 m track-and-field (track-and-field athletes, n = 8) and 20 m shuttle run en...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5862865/ https://www.ncbi.nlm.nih.gov/pubmed/29599725 http://dx.doi.org/10.3389/fphys.2018.00228 |
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author | Nikolaidis, Pantelis T. Clemente, Filipe M. van der Linden, Cornelis M. I. Rosemann, Thomas Knechtle, Beat |
author_facet | Nikolaidis, Pantelis T. Clemente, Filipe M. van der Linden, Cornelis M. I. Rosemann, Thomas Knechtle, Beat |
author_sort | Nikolaidis, Pantelis T. |
collection | PubMed |
description | The objectives of the present study were to examine the validity and reliability of the 10 Hz Johan GPS unit in assessing in-line movement and change of direction. The validity was tested against the criterion measure of 200 m track-and-field (track-and-field athletes, n = 8) and 20 m shuttle run endurance test (female soccer players, n = 20). Intra-unit and inter-unit reliability was tested by intra-class correlation coefficient (ICC) and coefficient of variation (CV), respectively. An analysis of variance examined differences between the GPS measurement and five laps of 200 m at 15 km/h, and t-test examined differences between the GPS measurement and 20 m shuttle run endurance test. The difference between the GPS measurement and 200 m distance ranged from −0.13 ± 3.94 m (95% CI −3.42; 3.17) in the first lap to 2.13 ± 2.64 m (95% CI −0.08; 4.33) in the fifth lap. A good intra-unit reliability was observed in 200 m (ICC = 0.833, 95% CI 0.535; 0.962). Inter-unit CV ranged from 1.31% (fifth lap) to 2.20% (third lap). The difference between the GPS measurement and 20 m shuttle run endurance test ranged from 0.33 ± 4.16 m (95% CI −10.01; 10.68) in 11.5 km/h to 9.00 ± 5.30 m (95% CI 6.44; 11.56) in 8.0 km/h. A moderate intra-unit reliability was shown in the second and third stage of the 20 m shuttle run endurance test (ICC = 0.718, 95% CI 0.222;0.898) and good reliability in the fifth, sixth, seventh and eighth (ICC = 0.831, 95% CI −0.229;0.996). Inter-unit CV ranged from 2.08% (11.5 km/h) to 3.92% (8.5 km/h). Based on these findings, it was concluded that the 10 Hz Johan system offers an affordable valid and reliable tool for coaches and fitness trainers to monitor training and performance. |
format | Online Article Text |
id | pubmed-5862865 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-58628652018-03-29 Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction Nikolaidis, Pantelis T. Clemente, Filipe M. van der Linden, Cornelis M. I. Rosemann, Thomas Knechtle, Beat Front Physiol Physiology The objectives of the present study were to examine the validity and reliability of the 10 Hz Johan GPS unit in assessing in-line movement and change of direction. The validity was tested against the criterion measure of 200 m track-and-field (track-and-field athletes, n = 8) and 20 m shuttle run endurance test (female soccer players, n = 20). Intra-unit and inter-unit reliability was tested by intra-class correlation coefficient (ICC) and coefficient of variation (CV), respectively. An analysis of variance examined differences between the GPS measurement and five laps of 200 m at 15 km/h, and t-test examined differences between the GPS measurement and 20 m shuttle run endurance test. The difference between the GPS measurement and 200 m distance ranged from −0.13 ± 3.94 m (95% CI −3.42; 3.17) in the first lap to 2.13 ± 2.64 m (95% CI −0.08; 4.33) in the fifth lap. A good intra-unit reliability was observed in 200 m (ICC = 0.833, 95% CI 0.535; 0.962). Inter-unit CV ranged from 1.31% (fifth lap) to 2.20% (third lap). The difference between the GPS measurement and 20 m shuttle run endurance test ranged from 0.33 ± 4.16 m (95% CI −10.01; 10.68) in 11.5 km/h to 9.00 ± 5.30 m (95% CI 6.44; 11.56) in 8.0 km/h. A moderate intra-unit reliability was shown in the second and third stage of the 20 m shuttle run endurance test (ICC = 0.718, 95% CI 0.222;0.898) and good reliability in the fifth, sixth, seventh and eighth (ICC = 0.831, 95% CI −0.229;0.996). Inter-unit CV ranged from 2.08% (11.5 km/h) to 3.92% (8.5 km/h). Based on these findings, it was concluded that the 10 Hz Johan system offers an affordable valid and reliable tool for coaches and fitness trainers to monitor training and performance. Frontiers Media S.A. 2018-03-15 /pmc/articles/PMC5862865/ /pubmed/29599725 http://dx.doi.org/10.3389/fphys.2018.00228 Text en Copyright © 2018 Nikolaidis, Clemente, van der Linden, Rosemann and Knechtle. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Physiology Nikolaidis, Pantelis T. Clemente, Filipe M. van der Linden, Cornelis M. I. Rosemann, Thomas Knechtle, Beat Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title | Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title_full | Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title_fullStr | Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title_full_unstemmed | Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title_short | Validity and Reliability of 10-Hz Global Positioning System to Assess In-line Movement and Change of Direction |
title_sort | validity and reliability of 10-hz global positioning system to assess in-line movement and change of direction |
topic | Physiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5862865/ https://www.ncbi.nlm.nih.gov/pubmed/29599725 http://dx.doi.org/10.3389/fphys.2018.00228 |
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