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Exercise Dose Equalization in High-Intensity Interval Training: A Scoping Review

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Normand-Gravier, T., Britto, F., Launay, T., Renfree, Andrew ORCID: https://orcid.org/0000-0001-9039-8574, Toussaint, J. F. and Desgorces, F. D. (2022) Exercise Dose Equalization in High-Intensity Interval Training: A Scoping Review. International Journal of Environmental Research and Public Health, 19 (9). p. 4980. ISSN 1660-4601

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Official URL: https://doi.org/10.3390/ijerph19094980

Abstract

Based on comparisons to moderate continuous exercise (MICT), high-intensity interval training (HIIT) is becoming a worldwide trend in physical exercise. This raises methodological questions related to equalization of exercise dose when comparing protocols. The present scoping review aims to identify in the literature the evidence for protocol equalization and the soundness of methods used for it. PubMed and Scopus databases were searched for original investigations comparing the effects of HIIT to MICT. A total of 2041 articles were identified, and 169 were included. Of these, 98 articles equalized protocols by utilizing energy-based methods or exercise volume (58 and 31 articles, respectively). No clear consensus for protocol equalization appears to have evolved over recent years. Prominent equalization methods consider the exercise dose (i.e., energy expenditure/production or total volume) in absolute values without considering the nonlinear nature of its relationship with duration. Exercises resulting from these methods induced maximal exertion in HIIT but low exertion in MICT. A key question is, therefore, whether exercise doses are best considered in absolute terms or relative to individual exercise maximums. If protocol equalization is accepted as an essential methodological prerequisite, it is hypothesized that comparison of program effects would be more accurate if exercise was quantified relative to intensity-related maximums.

Item Type:	Article
Additional Information:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Uncontrolled Discrete Keywords:	training programs, physical activity, effort, patients, athletes
Subjects:	Q Science > QP Physiology
Divisions:	College of Business, Psychology and Sport > School of Sport and Exercise Science
Related URLs:	Publisher
Copyright Info:	© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Depositing User:	Andrew Renfree
Date Deposited:	27 Apr 2022 15:29
Last Modified:	27 Apr 2022 15:29
URI:	https://eprints.worc.ac.uk/id/eprint/12001

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