Cross training: indices of training stress and performance - Flynn, M. G.; Carroll, K. K.; Hall, H. L.; Bushman, B. A.; Brolinson, P. G.; Weideman, C. A. (Medicine & Science in Sports & Exercise, 1998)
Keywords: long distance running; training method; ergometry; load organization; hormone; overtraining; USA; biological and medical sciences; endurance sports