Hostetter, K., S. R. Steven R. McClaran, D. G. Cox, and G. M. Dallam. “Triathlete Adapts to Breathing Restricted to the Nasal Passage Without Loss in VO2max or vVO2max”. Journal of Sport and Human Performance, vol. 4, no. 1, Apr. 2016, doi:10.12922/jshp.v4i1.70.