Comparing unequal volumes of HIIT and MICT does not introduce bias

Citation

Vollaard NB, Metcalfe RS & Astorino TA (2023) Comparing unequal volumes of HIIT and MICT does not introduce bias. Trends in Endocrinology & Metabolism. https://doi.org/10.1016/j.tem.2023.03.007

Abstract
First paragraph: We would like to thank Andreato et al. [1] and Stern [2] for their further contributions to the discussion about the perceived need to equalise high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) for energy expenditure, work done, or session duration, to avoid bias in the interpretation of comparison studies. We read their letters with interest, but we fail to find further justification for the need to equalise protocols, and remain unconvinced by the arguments presented. Unfortunately, we have insufficient space to rebut all claims made by Andreato et al. [1] and Stern [2], or to expand the argument to research into sports performance. Therefore, we will limit ourselves to the key presenting issue.

Keywords
bias; comparison studies; high-intensity interval training; moderate-intensity continuous training.

Journal
Trends in Endocrinology & Metabolism