Key result
Two periods of high-intensity interval training separated by detraining resulted in reproducible group-level improvements in flow-mediated dilation in young men.
Why the study?
Endothelial function measured by flow-mediated dilation had not been previously examined following repeated periods of high-intensity interval training.
Hypothesis-generating for repeated HIIT effects on endothelial function; larger trials needed before clinical consideration in young men.
This is the first study examining endothelial function [flow-mediated dilation (FMD)] following repeated periods of high-intensity interval training (HIIT). Two periods of HIIT separated by detraining resulted in reproducible group-level improvements in FMD. Despite considerable between-subject variability in FMD adaptation, individual FMD changes with the first HIIT period predicted FMD changes in the second period. This indicates the existence of reproducible between-subject differences in susceptibility to FMD improvement with HIIT.
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Williams et al. (2020) studied this question. High-intensity interval training (HIIT) was evaluated on Endothelial function [flow-mediated dilation (FMD)]. Two periods of high-intensity interval training separated by detraining resulted in reproducible group-level improvements in flow-mediated dilation in young men.
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