A Method for Continuous Blood Sampling During Flotation REST
Flotation Restricted Environmental Stimulation Therapy (flotation REST) is a deep relaxation modality in which an individual lies supinely in a thermoneutral buoyant fluid with minimal photic, auditory and tactile stimulation (Lilly, 1977). Blood levels of several hormones, including aldosterone, renin activity, ACTH, LH, and Cortisol, have been measured in association with flotation REST (henceforth, REST) and significant changes in the levels of several of these hormones have been reported (Turner & Fine 1983, 1991; Turner et al., 1989; McGrady et al., 1987). These studies have examined pre- to post-session and across-session changes in plasma levels of hormones. Although pre- to post-session decreases in plasma Cortisol have been observed (Turner & Fine, 1983) in sessions as brief as 35 minutes, the characteristics and patterns of hormonal change during a REST session are unknown.
KeywordsPlasma Cortisol Tactile Stimulation Plasma Cortisol Level Heparin Infusion Cortisol Data
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