Remote, Whole-Body Interval Training Improves Muscular Endurance and Cardiac Autonomic Control in Young Adults

Patricia Concepción García-Suárez (), Ermilo Canton-Martínez, Iván Rentería, Barbara Moura Antunes, Juan Pablo Machado-Parra, Jorge Alberto Aburto-Corona, Luis Mario Gómez-Miranda and Alberto Jiménez-Maldonado ()
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Patricia Concepción García-Suárez: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico
Ermilo Canton-Martínez: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico
Iván Rentería: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico
Barbara Moura Antunes: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico
Juan Pablo Machado-Parra: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico
Jorge Alberto Aburto-Corona: Facultad de Deportes Campus Tijuana, Universidad Autónoma de Baja California, Tijuana 22390, Mexico
Luis Mario Gómez-Miranda: Facultad de Deportes Campus Tijuana, Universidad Autónoma de Baja California, Tijuana 22390, Mexico
Alberto Jiménez-Maldonado: Facultad de Deportes Campus Ensenada, Universidad Autónoma de Baja California, Ensenada 22800, Mexico

IJERPH, 2022, vol. 19, issue 21, 1-12

Abstract: High-intensity interval training (HIIT) is an exercise modality acknowledged to maintain physical fitness with more engagement in an active lifestyle compared with other traditional exercise models. Nevertheless, its effects on cardiac control and physical performance in an online-guided setting are not yet clarified. The present work assessed physical fitness and heart rate variability (HRV) before and after an online, home-based HIIT program in college-age students while pandemic lockdowns were in effect. Twenty university students (age: 21.9 ± 2.4 years.) that were solely enrolled in online classes were distributed into three groups: control—CON-( n = 6), 14 min of HIIT—HIIT-14-( n = 8), and 21 min of HIIT—HIIT-21-( n = 6). A maximal push-up test was employed to assess muscular endurance and performance, and resting HRV signals were collected with wireless heart rate monitors and were processed in Kubios HRV Std. (Kubios Oy, Finland). There was an increase in total push-up capacity compared to CON ( p < 0.05 HIIT-21 vs. CON; p < 0.001 HIIT-14 vs. CON) after 8 weeks. A significant interaction was observed in high-frequency and low-frequency spectra ratios after the HIIT-21 intervention ( p < 0.05). The current work demonstrated that either short- or mid-volume online, whole-body HIIT improves muscle strength, whereas mid-volume HIIT (HIIT-21) was the only intervention that developed a sympathovagal adaptation. This study showed promising results on muscular endurance and cardiac autonomic modulation through whole-body HIIT practice at home.

Keywords: high-intensity interval training; COVID-19 pandemic; heart rate variability (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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