Coralie Arc-Chagnaud from the University of Poitiers and colleagues conducted a small cross-sectional study and concluded that a short course of whole-body cryostimulation improves sleep quality in healthy people. The study involved 11 men and 9 women aged 23.1 ± 2.6 years. Each of them had their sleep quality and heart rate variability recorded randomly at night for five consecutive days, during which they either did or did not receive five-minute sessions of whole-body cryostimulation at a temperature of -90 degrees Celsius. The results are published in the journal Cryobiology.
It turned out that even a short course of cryostimulation improved on average the subjective quality of sleep (from 3.6 ± 0.5 to 3.9 ± 0.3 points), general mood according to the POMS scale and the duration of the slow sleep phase (by 7.3 ± 16.8 minutes); other physiological parameters were not affected. In the absence of active procedures, such changes were not observed.
