Impact of supra-maximal interval training vs. high-intensity interval training on cardiac auto-regulation response in physically active adults.

Autor: Seo MW; Department of Sports and Leisure Studies, College of Physical Education, Keimyung University, Daegu, Republic of Korea., Lee S; Department of Counseling, Health and Kinesiology, College of Education and Human Development, Texas A&M University at San Antonio, San Antonio, TX, USA., Jung HC; Sports Science Research Center, College of Physical Education, Kyung Hee University, Yongin, Gyeonggi-do, Republic of Korea. jhc@khu.ac.kr.; Department of Sports Coaching, College of Physical Education, Kyung Hee University, Yongin, Gyeonggi-do, Republic of Korea. jhc@khu.ac.kr.
Jazyk: angličtina
Zdroj: European journal of applied physiology [Eur J Appl Physiol] 2024 Jun; Vol. 124 (6), pp. 1771-1780. Date of Electronic Publication: 2024 Jan 20.
DOI: 10.1007/s00421-023-05402-1
Abstrakt: Purpose: This study aimed to examine the impact of supra-maximal interval training (SMIT) and high-intensity interval training (HIIT) on cardiac auto-regulation response.
Methods: Physically active young adults volunteered to participate in the study with a randomized cross-over counterbalanced design (N = 12). HIIT sessions consisted of 20 bouts of 10 s of exercise followed by 50 s of recovery, totaling 20 min at two different intensities; "all-out (SMIT)" vs. "115-130% W max (HIIT)". The cardiac auto-regulation included heart rate variability (HRV) and vascular function. HRV and vascular function were measured at baseline and five different time points after acute exercise.
Results: The SMIT was higher in workload (31%), peak heart rate (28%), and rate of perceived exertion (40%) compared with HIIT (all p < 0.001). The R-R interval, NN50, and pNN50 measured until 60 min after acute exercise was higher in the HIIT compared with SMIT (all p < 0.05). The SMIT elicited a greater shift in ln LF/HF ratio immediately after acute exercise (3802%, p < 0.01) and induced a decrease in bilateral ba-PWV at the time point 5 min after acute exercise, persisting until 65 min after (p < 0.05). Yet, HIIT showed no change over time in the frequency domain of HRV and blood vascular tone after cessation of acute exercise.
Conclusion: Our findings confirmed that SMIT is a more potent modulator of the autonomic nervous system compared with HIIT. Further study is needed to monitor through complete recovery to baseline, to understand acute cardiac auto-regulation response after cessation of various exercise intensities identical interval training protocol.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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