798 CARDIOVASCULAR EFFECTS OF WHOLE-BODY CRYOTHERAPY IN NON-PROFESSIONAL ATHLETES

Abstract

Abstract Whole-body cryotherapy (WBC) is a method of cold therapy widely applied for muscle recovery after injury to counteract the inflammatory response due to specific diseases, characterized by high levels of inflammation. WBC consists of short exposure, of about 2-3 minutes, to dry air at cryogenic temperatures (up to -190°C) in a special chamber. Our study aimed to investigate changes in respiratory rate, oxygen saturation, blood pressure, heart rate and body temperature induced by WBC sessions in athletes. Ten volunteer middle-distance non-professional runners (age: 38±12 years) received 3 once-a-day sessions of WBC. Subjects underwent blood pressure measurements and ECG recorded before and immediately after the daily session. During WBC we recorded a single lead trace (D1) for heart rhythm control. Moreover, we monitored the 5 vital signs, such as blood pressure, heart rate, respiratory rate, oxygen saturation and body temperature, during, and after all WBC session. We did not report significant changes in ECG main intervals (PR, QT, and QTc) and in the mean systolic blood pressure during and after WBC [baseline: 118 ± 5 mmHg, changed to 120 ± 3 mmHg during WBC, and to 121 ± 2 mmHg after session]. Mean respiratory rate did not change significantly during WBC as well as oxygen saturation (98 vs. 99%). Mean heart rate changed from 50.98 ± 4.43 bpm (before) to 56.83 ± 4.26 bpm after WBC session (p < 0.05) and body temperature was slightly increased after WBC, however it remains within physiological values. In non-professional athletes WBC did not affect cardiovascular response and can be safely used. However, further studies are required to confirm these promising results of safety in elderly non-athlete subjects.