Monitoring weekly heart rate variability in futsal players during the preseason: the importance of maintaining high vagal activity.
Nakamura FY, Pereira LA, Rabelo FN, Flatt AA, Esco MR, Bertollo M, Loturco I. Monitoring weekly heart rate variability in futsal players during the preseason: the importance of maintaining high vagal activity. J Sports Sci. 2016 Dec; 34(24):2262-2268.