2Billat ,LV,Interval training for performance:a scientific and empirical practice.Part I :aerobic interval training[J].Sports Med,2001 (31) :13-31.
3B. Knechtle , G. Muller ,F. Willmann,et al. Fat oxidation ill men and women eudurance athletes in running and cycling[J], lnt J Sports Med,2004(25) :38-44.