Coralie Arc-Chagnaud of the University of Poitiers and her colleagues conducted a small cross-sectional study and concluded that a short course of whole-body cryostimulation improves sleep quality in healthy individuals. The study involved 11 men and 9 women aged 23.1 ± 2.6 years. Sleep quality and heart rate variability were randomly recorded for each participant over five consecutive days, during which they either received or did not receive five-minute sessions of whole-body cryostimulation at -90 degrees Celsius. The results were published in the journal Cryobiology.
It was found that even a short course of cryostimulation resulted in an average improvement in subjective sleep quality (from 3.6 ± 0.5 to 3.9 ± 0.3 points), overall mood on the POMS scale, and the duration of slow-wave sleep (by 7.3 ± 16.8 minutes); other physiological parameters were unaffected. No such changes were observed in the absence of active procedures.
