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Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing

The smartphone has recently become a commonly used tool for satellite navigation. The reliability of built-in smartphone Global Navigation Satellite Systems receivers was analyzed in terms of distance, velocity/speed and acceleration, but little is known about the accuracy of angular change-of-direc...

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Autores principales: Tarnas, Jacek, Schaffert, Nina, Elegańczyk-Kot, Helena, Kostański, Leszek, Stemplewski, Rafał
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7277220/
https://www.ncbi.nlm.nih.gov/pubmed/32429531
http://dx.doi.org/10.3390/ijerph17103494
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author Tarnas, Jacek
Schaffert, Nina
Elegańczyk-Kot, Helena
Kostański, Leszek
Stemplewski, Rafał
author_facet Tarnas, Jacek
Schaffert, Nina
Elegańczyk-Kot, Helena
Kostański, Leszek
Stemplewski, Rafał
author_sort Tarnas, Jacek
collection PubMed
description The smartphone has recently become a commonly used tool for satellite navigation. The reliability of built-in smartphone Global Navigation Satellite Systems receivers was analyzed in terms of distance, velocity/speed and acceleration, but little is known about the accuracy of angular change-of-direction measurements. This might be important in the assessment of usefulness in sailing navigation. The aim of the study was to assess the reliability of the calculated change-of-direction angles, measured with the built-in smartphone Global Navigation Satellite Systems technology using the SoniSailing application. One individual completed five trials in an urban open space (sports ground), wearing six identical Samsung Galaxy J5 smartphones. The trials simulated an upwind sailing race (127 m), including two consecutive courses at 45° angle to the line of the tacking leg. To assess the reliability of change-of-direction angle measures the intra- and inter-device correlation coefficients were calculated. The analysis showed excellent reliability in change-of-direction angle measures—no less than 0.95 and 0.93 in case of correlation coefficients for inter- and intra-device, respectively. Correlation coefficients for average measures were no less than 0.99 in both cases. The study confirmed high reliability of the calculated change-of-direction angles, measured with the Global Navigation Satellite Systems technology using the SoniSailing application for smartphones.
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spelling pubmed-72772202020-06-15 Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing Tarnas, Jacek Schaffert, Nina Elegańczyk-Kot, Helena Kostański, Leszek Stemplewski, Rafał Int J Environ Res Public Health Article The smartphone has recently become a commonly used tool for satellite navigation. The reliability of built-in smartphone Global Navigation Satellite Systems receivers was analyzed in terms of distance, velocity/speed and acceleration, but little is known about the accuracy of angular change-of-direction measurements. This might be important in the assessment of usefulness in sailing navigation. The aim of the study was to assess the reliability of the calculated change-of-direction angles, measured with the built-in smartphone Global Navigation Satellite Systems technology using the SoniSailing application. One individual completed five trials in an urban open space (sports ground), wearing six identical Samsung Galaxy J5 smartphones. The trials simulated an upwind sailing race (127 m), including two consecutive courses at 45° angle to the line of the tacking leg. To assess the reliability of change-of-direction angle measures the intra- and inter-device correlation coefficients were calculated. The analysis showed excellent reliability in change-of-direction angle measures—no less than 0.95 and 0.93 in case of correlation coefficients for inter- and intra-device, respectively. Correlation coefficients for average measures were no less than 0.99 in both cases. The study confirmed high reliability of the calculated change-of-direction angles, measured with the Global Navigation Satellite Systems technology using the SoniSailing application for smartphones. MDPI 2020-05-17 2020-05 /pmc/articles/PMC7277220/ /pubmed/32429531 http://dx.doi.org/10.3390/ijerph17103494 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tarnas, Jacek
Schaffert, Nina
Elegańczyk-Kot, Helena
Kostański, Leszek
Stemplewski, Rafał
Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title_full Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title_fullStr Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title_full_unstemmed Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title_short Intra- and Inter-Device Reliability of the Change-of-Direction Angles Using a Smartphone Application for Sailing
title_sort intra- and inter-device reliability of the change-of-direction angles using a smartphone application for sailing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7277220/
https://www.ncbi.nlm.nih.gov/pubmed/32429531
http://dx.doi.org/10.3390/ijerph17103494
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