Effect of exercise-heat acclimation on cardiac autonomic modulation in type 2 diabetes: A pilot study
Publication Name
Applied Physiology, Nutrition and Metabolism
Abstract
The effects of exercise-heat acclimation on heart rate variability (HRV) in individuals with type 2 diabetes (T2D) remains unclear. We assessed electrocardiogram recordings during exercise-heat stress in middle-aged-to-older individuals (50–70 years) with (n = 6) and without (control; n = 8;) T2D, before and after 7 days of exercise-heat acclimation. Exercising heart rate was reduced (control, 9 6 5 bpm; T2D, 14 6 9 bpm) yet HRV was not significantly different. Given the negative correlations between diminished HRV and cardiac risk observed in the scientific literature, further research is warranted. Novelty: Our observations indicate that 7 days exercise-heat acclimation may not effectively attenuate the deviation toward reduced overall HRV and unfavourable cardiac autonomic modulation in individuals with T2D.
Open Access Status
This publication is not available as open access
Volume
46
Issue
3
First Page
284
Last Page
287