Speed and heart rate variation during marathon running in a hot environment

Speed and heart rate variation during marathon running in a hot environment

The purpose of the study was to analyze the variation of running speed and heart rate in amateur runners during a marathon in a hot environment. Eighteen runners (weight: 65.2 ± 12.21 kg, height: 168.4 ± 10.6 cm, VO2max: 52.9 ± 7.1 ml/kg/min) took part of a beach-side marathon (42195 m) under a temp...

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Main Authors: Rojas-Valverde, Daniel, Sánchez-Ureña, Braulio, Ugalde-Ramírez, Alexis, Gómez-Carmona, Carlos D, Pino-Ortega, José, Gutiérrez-Vargas, Randall
Format: Online
Language:eng
Published: Escuela de Educación Física y Deportes - Universidad de Costa Rica 2020
Online Access:https://revistas.ucr.ac.cr/index.php/pem/article/view/37602
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author Rojas-Valverde, Daniel
Sánchez-Ureña, Braulio
Ugalde-Ramírez, Alexis
Gómez-Carmona, Carlos D
Pino-Ortega, José
Gutiérrez-Vargas, Randall
spellingShingle Rojas-Valverde, Daniel
Sánchez-Ureña, Braulio
Ugalde-Ramírez, Alexis
Gómez-Carmona, Carlos D
Pino-Ortega, José
Gutiérrez-Vargas, Randall
Speed and heart rate variation during marathon running in a hot environment
author_facet Rojas-Valverde, Daniel
Sánchez-Ureña, Braulio
Ugalde-Ramírez, Alexis
Gómez-Carmona, Carlos D
Pino-Ortega, José
Gutiérrez-Vargas, Randall
author_sort Rojas-Valverde, Daniel
description The purpose of the study was to analyze the variation of running speed and heart rate in amateur runners during a marathon in a hot environment. Eighteen runners (weight: 65.2 ± 12.21 kg, height: 168.4 ± 10.6 cm, VO2max: 52.9 ± 7.1 ml/kg/min) took part of a beach-side marathon (42195 m) under a temperature of 27.8 ± 3.52 ºC and at 0-80 m altitude. Pearson’s correlation showed a significant linear relationship between the increase in thermal stress index (WGBT) and the speed variation (r= 0.168, p= 0.049). In this respect, the total duration of the race revealed a direct relationship with speed (r= 0.675, p= 0.003) and heart rate (r= 0.631, p= 0.007) variation. Multiple regressions analysis showed that 61.6% of the final race time was explained by the speed variation in the 26 to 30 km course section (r2= 0.61; F= 26.17; p< 0.001) and 37% by the heart rate variation in the 31 to 35 km section (r2= 0.37; F= 10.38; p< 0.001). In conclusion, an increase in the environmental temperature provoked a decrease in running pacing, with a stronger effect in the second half of the race. Therefore, coaches should take these aspects into account in training and strategies to mitigate the impact of these conditions on the physical and physiological performance of amateur runners.
title Speed and heart rate variation during marathon running in a hot environment
title_short Speed and heart rate variation during marathon running in a hot environment
title_full Speed and heart rate variation during marathon running in a hot environment
title_fullStr Speed and heart rate variation during marathon running in a hot environment
title_full_unstemmed Speed and heart rate variation during marathon running in a hot environment
title_sort speed and heart rate variation during marathon running in a hot environment
title_alt Speed and heart rate variation during marathon running in a hot environment
Variação da velocidade e a frequência cardíaca durante uma maratona em um ambiente caloroso
publisher Escuela de Educación Física y Deportes - Universidad de Costa Rica
publishDate 2020
url https://revistas.ucr.ac.cr/index.php/pem/article/view/37602
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spelling PEM376022021-06-09T00:54:03Z Speed and heart rate variation during marathon running in a hot environment Speed and heart rate variation during marathon running in a hot environment Variação da velocidade e a frequência cardíaca durante uma maratona em um ambiente caloroso Rojas-Valverde, Daniel Sánchez-Ureña, Braulio Ugalde-Ramírez, Alexis Gómez-Carmona, Carlos D Pino-Ortega, José Gutiérrez-Vargas, Randall marathon thermal stress index passing endurance internal load marathon thermal stress index passing endurance internal load maratona índice de estresse térmico ritmo resistência carga interna The purpose of the study was to analyze the variation of running speed and heart rate in amateur runners during a marathon in a hot environment. Eighteen runners (weight: 65.2 ± 12.21 kg, height: 168.4 ± 10.6 cm, VO2max: 52.9 ± 7.1 ml/kg/min) took part of a beach-side marathon (42195 m) under a temperature of 27.8 ± 3.52 ºC and at 0-80 m altitude. Pearson’s correlation showed a significant linear relationship between the increase in thermal stress index (WGBT) and the speed variation (r= 0.168, p= 0.049). In this respect, the total duration of the race revealed a direct relationship with speed (r= 0.675, p= 0.003) and heart rate (r= 0.631, p= 0.007) variation. Multiple regressions analysis showed that 61.6% of the final race time was explained by the speed variation in the 26 to 30 km course section (r2= 0.61; F= 26.17; p< 0.001) and 37% by the heart rate variation in the 31 to 35 km section (r2= 0.37; F= 10.38; p< 0.001). In conclusion, an increase in the environmental temperature provoked a decrease in running pacing, with a stronger effect in the second half of the race. Therefore, coaches should take these aspects into account in training and strategies to mitigate the impact of these conditions on the physical and physiological performance of amateur runners. The purpose of the study was to analyze the variation of running speed and heart rate in amateur runners during a marathon in a hot environment. Eighteen runners (weight: 65.2 ± 12.21 kg, height: 168.4 ± 10.6 cm, VO2max: 52.9 ± 7.1 ml/kg/min) took part of a beach-side marathon (42195 m) under a temperature of 27.8 ± 3.52 ºC and at 0-80 m altitude. Pearson’s correlation showed a significant linear relationship between the increase in thermal stress index (WGBT) and the speed variation (r= 0.168, p= 0.049). In this respect, the total duration of the race revealed a direct relationship with speed (r= 0.675, p= 0.003) and heart rate (r= 0.631, p= 0.007) variation. Multiple regressions analysis showed that 61.6% of the final race time was explained by the speed variation in the 26 to 30 km course section (r2= 0.61; F= 26.17; p< 0.001) and 37% by the heart rate variation in the 31 to 35 km section (r2= 0.37; F= 10.38; p< 0.001). In conclusion, an increase in the environmental temperature provoked a decrease in running pacing, with a stronger effect in the second half of the race. Therefore, coaches should take these aspects into account in training and strategies to mitigate the impact of these conditions on the physical and physiological performance of amateur runners. O presente estudo teve como objetivo analisar a variação da velocidade da corrida e a frequência cardíaca em corredores amadores durante uma maratona em um ambiente de alto índice térmico. Dezoito corredores amadores (peso: 65,2 ± 12,21 kg, altura: 168,4 ± 10,6 cm, VO2max: 52,9 ± 7,1 ml/kg/min) correram uma maratona (42195 m) em proximidade ao mar, sob um índice térmico de 27,8 ± 3,52 ºC e com percurso de 0-80 metros acima do nível do mar. O teste de Pearson apresentou uma correlação significativa entre o aumento do índice de estresse térmico (IBUTG) e a variação da velocidade (r= 0,168, p= 0,049). Neste sentido, a duração total da corrida apresentou uma relação direta com a velocidade (r= 0,675, p= 0,003) e a variação da frequência cardíaca (r= 0,631, p= 0,007). O tempo final da corrida se interpretou em 61,6% e 37% pela variação da velocidade de 26 a 30 km (r2= 0,61; F= 26,17; p< 0,001) e pela variabilidade da frequência cardíaca no lapso de 31 a 35 km (r2= 0,37; F= 10,38; p< 0,001), respectivamente. Em suma, o índice térmico provoca uma diminuição no ritmo da velocidade, sendo esse efeito maior na segunda metade da corrida. Devido a isso, os preparadores devem planejar treinamentos e estratégias para mitigar o impacto dessas condições no desempenho físico e fisiológico dos corredores amadores. Escuela de Educación Física y Deportes - Universidad de Costa Rica 2020-03-19 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article Artículo con revisión por pares Artigo avaliado pelos pares application/pdf application/pdf text/xml application/zip https://revistas.ucr.ac.cr/index.php/pem/article/view/37602 10.15517/pensarmov.v18i1.37602 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; Vol. 18 No. 1 (2020): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (Opens January 1, closes June 30); e37602 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; Vol. 18 Núm. 1 (2020): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (Abre 1° de enero, cierra 30 de junio); e37602 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; v. 18 n. 1 (2020): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (Abre 1 de Janeiro, encerra 30 de Junho); e37602 Pensar en movimiento; Vol. 18 N.º 1 (2020): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (Abre 1° de enero, cierra 30 de junio); e37602 1659-4436 1409-0724 eng https://revistas.ucr.ac.cr/index.php/pem/article/view/37602/41653 https://revistas.ucr.ac.cr/index.php/pem/article/view/37602/42163 https://revistas.ucr.ac.cr/index.php/pem/article/view/37602/43728 https://revistas.ucr.ac.cr/index.php/pem/article/view/37602/43729 Derechos de autor 2020 Daniel Rojas-Valverde, Braulio Sánchez-Ureña, Alexis Ugalde-Ramírez, Carlos D Gómez-Carmona, José Pino-Ortega, Randall Gutiérrez-Vargas

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