High intensity interval training alters substrate utilization and reduces oxygen consumption in the heart - Hafstad, A. D.; Boardman, N. T.; Lund, J.; Hagve, M.; Khalid, A. M.; Wisløff, U.; Larsen, T. S.; Aasum, E. (Journal of Applied Physiology, 2011)
Keywords: training; load intensity; interval method; relation; sport physiology; heart; USA; biological and medical sciences