2Ferrauti A,Bergeron MF,Pluim BM,et al.Physiological responses in tennis and running with similar oxygen uptake.Eur J Appl Physiol 2001;85 (1-2):27-33
3Smekal G,yon Duvillard SP,Pokan R,et al.Changes in blood lactate and respiratory gas exchange measures in sports with discontinuous load profiles.Eur J Appl Physiol 2003;89(5):489-95