Journal of science and medicine in sport · 2025
Core temperature responses of male football players during matches in the heat - Associations with physiological and running demands.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Schwarz Edgar, Oliveira Catarina B, Duarte Muñoz Monica, Alanis Agustín, Alanis Marcela, Lara Aldo, Freeze Alfredo, Costa Júlio A, Eckerle Leander, Meyer Tim, Duffield Rob
Аннотация
OBJECTIVES: This study describes core temperature (Tcore) responses during football matches in warm to hot conditions. It aims to identify which physiological, running, and perceptual factors are associated with reaching high Tcore values while controlling for environmental conditions and cooling.
DESIGN: Forty highly trained male youth football players participated in at least two out of four matches held at temperatures between 26 and 42 °C. In three matches, heat mitigation strategies (passive rest and 17 °C drinks, or cold towels and 5 °C drinks) were applied pre-match, at half-time, and in additional breaks per half.
METHODS: Match running, heart rates, hydration markers, and perceptual responses were measured and checked for associations with peak Tcore values via linear mixed models accounting for environmental conditions and heat mitigation strategies.
RESULTS: Peak Tcore was 39.2 ± 0.5 °C (range: 37.9-40.1 °C). Higher total distance (β = 0.39 [0.13, 0.64], p = 0.004) and distance at low-to-moderate speeds (β = 0.44 [0.18, 0.69], p = 0.001) were associated with higher peak Tcore, while walking distance was inversely associated (β = -0.42 [-0.69, -0.15], p = 0.003). High-speed and sprinting distances were not associated with peak Tcore. Higher heart rate (β = 0.37 [0.10, 0.64], p = 0.008), sweat loss (β = 0.38 [0.14, 0.62], p = 0.002) and body mass loss (β = 0.20 [0.00, 0.40], p = 0.047) were also associated with higher peak Tcore. Rating-of-fatigue (p = 0.74), perceived exertion (p = 0.78), and thermal sensation (p = 0.98) were not associated with peak Tcore.
CONCLUSIONS: High Tcore peaks were observed in all conditions and were associated with higher heart rate, sweat loss, and match running. Covering more distance at low-to-moderate speed was associated with a higher heat strain, whereas walking more (instead of running) was associated with lower Tcore peaks.
DESIGN: Forty highly trained male youth football players participated in at least two out of four matches held at temperatures between 26 and 42 °C. In three matches, heat mitigation strategies (passive rest and 17 °C drinks, or cold towels and 5 °C drinks) were applied pre-match, at half-time, and in additional breaks per half.
METHODS: Match running, heart rates, hydration markers, and perceptual responses were measured and checked for associations with peak Tcore values via linear mixed models accounting for environmental conditions and heat mitigation strategies.
RESULTS: Peak Tcore was 39.2 ± 0.5 °C (range: 37.9-40.1 °C). Higher total distance (β = 0.39 [0.13, 0.64], p = 0.004) and distance at low-to-moderate speeds (β = 0.44 [0.18, 0.69], p = 0.001) were associated with higher peak Tcore, while walking distance was inversely associated (β = -0.42 [-0.69, -0.15], p = 0.003). High-speed and sprinting distances were not associated with peak Tcore. Higher heart rate (β = 0.37 [0.10, 0.64], p = 0.008), sweat loss (β = 0.38 [0.14, 0.62], p = 0.002) and body mass loss (β = 0.20 [0.00, 0.40], p = 0.047) were also associated with higher peak Tcore. Rating-of-fatigue (p = 0.74), perceived exertion (p = 0.78), and thermal sensation (p = 0.98) were not associated with peak Tcore.
CONCLUSIONS: High Tcore peaks were observed in all conditions and were associated with higher heart rate, sweat loss, and match running. Covering more distance at low-to-moderate speed was associated with a higher heat strain, whereas walking more (instead of running) was associated with lower Tcore peaks.