![]() Non-linear HRV measures included Sample entropy (SampEn, the short (Î☑, 4–12 beats and long-term (Î☒, 13–64 beats detrend fluctuation analysis slope and the correlation dimension (D2. A disposable cardiac patch monitor was used, to record the nocturnal cardiac inter-beat interval data, over 1 h (0200–0300 h, for offline HRV assessment. This study sought to examine this relationship at terrestrial HA.Methods: Sixteen healthy British military servicemen were studied at baseline (800 m, first night and over eight consecutive nights, at a sleeping altitude of up to 3600 m. Compared with traditional HRV measures, non-linear HRV appears to offer incremental and prognostic data, yet its utility and relationship to AMS have been barely examined at HA. High Altitude Affects Nocturnal Non-linear Heart Rate Variability: PATCH- HA Studyĭirectory of Open Access Journals (Sweden)įull Text Available Background: High altitude ( HA exposure can lead to changes in resting heart rate variability (HRV, which may be linked to acute mountain sickness (AMS development. ![]() This chapter describes experimental and clinical studies. HA is highly osseoconductive, and the positive effect is well documented in both basic and long-term clinical research. Of these, hydroxyapatite ( HA) is the most widely used and most extensively investigated. Daugaard, Henrik Søballe, Kjeld Bechtold, Joan E
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