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Open AccessArticle
Acute Response of Different High-Intensity Interval Training Protocols on Cardiac Auto-Regulation Using Wearable Device
by
Myong-Won Seo
Myong-Won Seo
Department of Sport and Leisure Studies, College of Physical Education, Keimyung University, Daegu 42601, Republic of Korea
Sensors 2024, 24(14), 4758; https://doi.org/10.3390/s24144758 (registering DOI)
Submission received: 20 June 2024
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Revised: 11 July 2024
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Accepted: 19 July 2024
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Published: 22 July 2024
Abstract
The purpose of this study was to compare different high-intensity interval training (HIIT) protocols with different lengths of work and rest times for a single session (all three had identical work-to-rest ratios and exercise intensities) for cardiac auto-regulation using a wearable device. With a randomized counter-balanced crossover, 13 physically active young male adults (age: 19.4 years, BMI: 21.9 kg/m2) were included. The HIIT included a warm-up of at least 5 min and three protocols of 10 s/50 s (20 sets), 20 s/100 s (10 sets), and 40 s/200 s (5 sets), with intensities ranging from 115 to 130% Wattmax. Cardiac auto-regulation was measured using a non-invasive method and a wearable device, including HRV and vascular function. Immediately after the HIIT session, the 40 s/200 s protocol produced the most intense stimulation in R-R interval (Δ-33.5%), ln low-frequency domain (Δ-42.6%), ln high-frequency domain (Δ-73.4%), and ln LF/HF ratio (Δ416.7%, all p < 0.05) compared to other protocols of 10 s/50 s and 20 s/100 s. The post-exercise hypotension in the bilateral ankle area was observed in the 40 s/200 s protocol only at 5 min after HIIT (right: Δ-12.2%, left: Δ-12.6%, all p < 0.05). This study confirmed that a longer work time might be more effective in stimulating cardiac auto-regulation using a wearable device, despite identical work-to-rest ratios and exercise intensity. Additional studies with 24 h measurements of cardiac autoregulation using wearable devices in response to various HIIT protocols are warranted.
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MDPI and ACS Style
Seo, M.-W.
Acute Response of Different High-Intensity Interval Training Protocols on Cardiac Auto-Regulation Using Wearable Device. Sensors 2024, 24, 4758.
https://doi.org/10.3390/s24144758
AMA Style
Seo M-W.
Acute Response of Different High-Intensity Interval Training Protocols on Cardiac Auto-Regulation Using Wearable Device. Sensors. 2024; 24(14):4758.
https://doi.org/10.3390/s24144758
Chicago/Turabian Style
Seo, Myong-Won.
2024. "Acute Response of Different High-Intensity Interval Training Protocols on Cardiac Auto-Regulation Using Wearable Device" Sensors 24, no. 14: 4758.
https://doi.org/10.3390/s24144758
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