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Communicated by Susan A. Ward.
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Bradley, P.S., Mascio, M.D., Bangsbo, J. et al. The maximal and sub-maximal versions of the Yo-Yo intermittent endurance test level 2 are simply reproducible, sensitive and valid. Eur J Appl Physiol 112, 1973–1975 (2012). https://doi.org/10.1007/s00421-011-2155-1
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DOI: https://doi.org/10.1007/s00421-011-2155-1