Impact of high intensity interval exercise with and without heat stress on cardiovascular and aerobic performance: a pilot study

BMC Sports Science, Medicine and Rehabilitation

Research Article

Isabelle F. Albin¹  Peter A. Califano¹  Justin M. Faller¹  Stephen J. Ives¹  Leah Glickman¹  Alexs A. Matias²  Gwenael Layec³ 

[1] Department of Health and Human Physiological Sciences, Skidmore College, 815 N. Broadway, 12866, Saratoga Springs, NY, USA;Department of Health and Human Physiological Sciences, Skidmore College, 815 N. Broadway, 12866, Saratoga Springs, NY, USA;Department of Kinesiology, University of Massachusetts at Amherst, Amherst, MA, USA;Department of Kinesiology, University of Massachusetts at Amherst, Amherst, MA, USA;Institute for Applied Life Sciences, University of Massachusetts, Amherst, MA, USA;

关键词: Blood pressure;    Running;    Vascular stiffness;    Pulse wave velocity;    Heat acclimation;   

DOI  :  10.1186/s13102-023-00682-8

 received in 2022-08-26, accepted in 2023-06-21,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundHeat stress during aerobic exercise training may offer an additional stimulus to improve cardiovascular function and performance in a cool-temperate environment. However, there is a paucity of information on the additive effects of high-intensity interval exercise (HIIE) and acute heat stress. We aimed to determine the effects of HIIE in combination with acute heat stress on cardiovascular function and exercise performance.MethodsTwelve active (peak O2 consumption [VO2peak]: 47 ± 8 ml·O2/min/kg) young adults were counterbalanced to six sessions of HIIE in hot (HIIE-H, 30 ± 1 °C, 50 ± 5% relative humidity [RH]) or temperate conditions (HIIE-T, 20 ± 2 °C, 15 ± 10% RH). Resting heart rate (HR), HR variability (HRV), central (cBP) and peripheral blood pressure (pBP), peripheral mean arterial pressure (pMAP), pulse wave velocity (PWV), VO2peak, and 5-km treadmill time-trial were measured pre- and post-training.ResultsResting HR and HRV were not significantly different between groups. However, expressed as percent change from baseline, cSBP (HIIE-T: + 0.9 ± 3.6 and HIIE-H: -6.6 ± 3.0%, p = 0.03) and pSBP (HIIE-T: -2.0 ± 4.6 and HIIE-H: -8.4 ± 4.7%, p = 0.04) were lower in the heat group. Post-training PWV was also significantly lower in the heat group (HIIE-T: + 0.4% and HIIE-H: -6.3%, p = 0.03). Time-trial performance improved with training when data from both groups were pooled, and estimated VO2peak was not significantly different between groups (HIIE-T: 0.7% and HIIE-H: 6.0%, p = 0.10, Cohen’s d = 1.4).ConclusionsThe addition of acute heat stress to HIIE elicited additive adaptations in only cardiovascular function compared to HIIE alone in active young adults in temperate conditions, thus providing evidence for its effectiveness as a strategy to amplify exercise-induced cardiovascular adaptations.

【 授权许可】

CC BY   
© The Author(s) 2023

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