Recently, Ketelhut et al. published an article on the effectiveness of a multi-activity high-intensity interval training in school-aged children on aerobic fitness and hemodynamic parameters in the International Journal of Sports Medicine. With this letter to the editor we would like to comment on the methods and clinical relevance of the results found.

dx.doi.org/10.1055/a-1308-8615, hdl.handle.net/1765/133236
International Journal of Sports Medicine
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Erasmus MC: University Medical Center Rotterdam

Mans, M.F.T. (M. F.T.), Van Der Most, F. (F.), & Cloosterman, K.L.A. (K. L.A.). (2021). Letter to the Editor on: Effectiveness of Multi-activity, High-intensity Interval Training in School-aged Children. International Journal of Sports Medicine, 42(1), 96–97. doi:10.1055/a-1308-8615