External training loads and smartphone-derived heart rate variability indicate readiness to train in elite soccer - Chrismas, B. C. R.; Taylor, L.; Thornton, H. R.; Murray, A.; Stark, G. (International Journal of Performance Analysis in Sport, 2019)
Keywords: soccer; high performance sport; training; load intensity; exercise / load tolerance; fatigue; performance; nervous system; recovery; heart rate; variability; technology; investigation method; training documentation; heart rate variability; Great Britain; biological and medical sciences; sport games