Cardiac function during heat stress: impact of short-term passive heat acclimation
Lukas D. Trachsel, Hadiatou Barry, Hugo Gravel, Parya Behzadi, Christine Henri, Daniel Gagnon
Abstract
A lower heart rate during heat exposure is a classic marker of heat acclimation (HA). It remains unknown if improved cardiac function contributes to this response. A 7-day passive HA protocol did not alter cardiac systolic function during passive heating, whereas it improved some indexes of diastolic function in young adults. Nonetheless, heart rate during heating was unaffected by HA. These results suggest that passive HA induces limited adaptations in cardiac function during passive heating.
Topics & Concepts
Heat stressAcclimatizationCardiac function curveCardiologyInternal medicineDiastoleHeart rateFunction (biology)Diastolic functionMedicineAnimal scienceBiologyHeart failureCell biologyEcologyBlood pressureThermoregulation and physiological responsesClimate Change and Health ImpactsInfrared Thermography in Medicine