Metcalfe, R., Thomas, G., Songsorn, P., Gorman, A., Brackenridge, B., Cullen, T., . . . Vollaard, N. B. (2020). Reducing training frequency from 3 or 4 sessions/week to 2 sessions/week does not attenuate improvements in maximal aerobic capacity with reduced-exertion high-intensity interval training (REHIT). Applied Physiology, Nutrition, and Metabolism, 45(6), pp. 683-685. doi:10.1139/apnm-2019-0750

Metcalfe, Richard, Gavin Thomas, Preeyaphorn Songsorn, Aimee Gorman, Ben Brackenridge, Tom Cullen, Ben Fitzpatrick, and Niels B.J Vollaard. "Reducing Training Frequency From 3 or 4 Sessions/week to 2 Sessions/week Does Not Attenuate Improvements in Maximal Aerobic Capacity With Reduced-exertion High-intensity Interval Training (REHIT)." Applied Physiology, Nutrition, and Metabolism 45, no. 6 (2020): 683-685.

Metcalfe, Richard, et al. "Reducing Training Frequency From 3 or 4 Sessions/week to 2 Sessions/week Does Not Attenuate Improvements in Maximal Aerobic Capacity With Reduced-exertion High-intensity Interval Training (REHIT)." Applied Physiology, Nutrition, and Metabolism 45.6 (2020): 683-685.