부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jtherbio.2006.01.004 Byline: Tarja Westerlund (a), Arja Uusitalo (b), Juhani Smolander (c), Marja Mikkelsson (a) Keywords: Whole-body cryotherapy; Heart rate variability; Adaptation of the autonomic nervous system; Women Abstract: Heart rate monitoring was used to measure heart rate variability (HRV) at thermoneutral conditions (Ta 24[degrees]C) in healthy women resting in supine position before and after acute and after repeated (3 times a week during a 3-month period) whole-body cryotherapies (WBC), at -110[degrees]C. The observed acute cooling-related increase in high frequency power (HFP) of RR-intervals indicates an increase in cardiac parasympathetic modulation. After 3 months of repeated WBC the increase in parasympathetic tone was attenuated, which may be interpreted as an adaptation of autonomic function. The repeated WBC exposures-related increase in resting low frequency power (LFP) of RR-intervals during the 3 months resembles the response observed related to exercise training. Author Affiliation: (a) Rheumatism Foundation Hospital, Heinola, Finland (b) Helsinki University Central Hospital, Helsinki, Finland (c) Orton Orthopaedic Hospital and Orton Research Institute, Foundation for Invalids, Helsinki, Finland Article History: Received 27 April 2005; Accepted 17 January 2006