Department of Physiology, Faculty of Natural Sciences, Szczecin University, Szczecin, Poland.
Int J Occup Med Environ Health. 2010;23(4):367-75. doi: 10.2478/v10001-010-0037-0.
In Poland and all over the world, whole-body cryostimulation is becoming more and more popular in the treatment of different diseases and in sport. However, changes that occur in the human body subjected to cryogenic temperatures are still not completely understood. Therefore, the aim of this study was to evaluate changes in blood circulation and aerobic capacity induced by repeated exposure to whole-body cryostimulation of young and clinically healthy male subjects.
The study included 25 young men, aged 21 ± 0.9 years, average body weight 74.65 ± 6.98 kg and height 179.5 ± 5.12 cm. The participants were exposed to extremely low temperatures in a cryogenic chamber once a day for 15 days. Each session lasted 3 min at -130°C and was preceded by 30-second, adaptation in a vestibule at -60°C. Blood pressure and heart rate were measured before entering the chamber, immediately after exiting and 10 min later. We also calculated pulse pressure and the mean arterial blood pressure. Before and after the treatment the maximal oxygen uptake was measured.
Our results showed a significant increase in systolic blood pressure after each cryostimulation (by an average of 19 mmHg) and an increase in diastolic blood pressure only after the first cryostimulation (by 6 mm Hg). The increase in systolic blood pressure was accompanied by a significant decrease in heart rate (by about 7 bpm). No adaptation changes were observed after 15 treatments. There were no changes in aerobic capacity after 15 sessions of WBC, however we observed a significant decrease in RBC and hemoglobin concentration.
Due to the increase in systolic blood pressure after WBC, this kind of physiotherapy treatment is not recommended for people with advanced or not pharmacologically controlled hypertension.
在波兰和世界各地，全身冷冻刺激疗法在治疗各种疾病和运动方面越来越受欢迎。然而，人体在受到冷冻温度影响时所发生的变化仍不完全清楚。因此，本研究的目的是评估重复暴露于全身冷冻刺激对年轻且临床健康的男性受试者的血液循环和有氧能力的变化。
该研究纳入了 25 名年轻男性，年龄 21 ± 0.9 岁，平均体重 74.65 ± 6.98kg，身高 179.5 ± 5.12cm。参与者每天在冷冻室中接受一次极低温暴露，持续 15 天。每次治疗持续 3 分钟，温度为-130°C，在进入冷冻室前 30 秒先在过渡室适应-60°C 的温度。进入冷冻室前、出冷冻室后即刻和 10 分钟后测量血压和心率。我们还计算了脉压和平均动脉血压。在治疗前后测量最大摄氧量。
我们的结果显示，每次冷冻刺激后收缩压均显著升高（平均升高 19mmHg），且仅在第一次冷冻刺激后舒张压升高（升高 6mmHg）。收缩压的升高伴随着心率的显著下降（约 7 次/分）。经过 15 次治疗后，没有观察到适应变化。经过 15 次 WBC 治疗后，有氧能力没有变化，但我们观察到红细胞和血红蛋白浓度显著下降。
由于 WBC 后收缩压升高，这种物理治疗方法不建议用于患有晚期或未经药物控制的高血压的人群。
