Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud ISSN Impreso: 1409-0724 ISSN electrónico: 1659-4436

OAI: https://revistas.ucr.ac.cr/index.php/pem/oai
Speed and heart rate variation during marathon running in a hot environment
Portada del volumen 18 número 1 de la Revista Pensar en Movimiento
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Keywords

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

How to Cite

Rojas-Valverde, D., Sánchez-Ureña, B., Ugalde-Ramírez, A., Gómez-Carmona, C. D., Pino-Ortega, J., & Gutiérrez-Vargas, R. (2020). Speed and heart rate variation during marathon running in a hot environment. Pensar En Movimiento: Revista De Ciencias Del Ejercicio Y La Salud, 18(1), e37602. https://doi.org/10.15517/pensarmov.v18i1.37602

Abstract

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.

https://doi.org/10.15517/pensarmov.v18i1.37602
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