Levels of agreement for RR intervals and short-term heart rate variability obtained from the Polar S810 and an alternative system - Nunan, D.; Jakovljevic, D. G.; Donovan, G.; Hodges, L. D.; Sandercock, G. R. H.; Brodie, D. A. (European Journal of Applied Physiology, 2008)
Keywords: heart rate; investigation method; auxiliary device; heart; frequency; Germany; biological and medical sciences; technical and natural sciences