Objective: The research was carried out to test the influence of adaptation to passive whole body hyperthermia (PH) on physical capacity and cardio-respiratory efficiency in men-amateur athletes under the testing load...Objective: The research was carried out to test the influence of adaptation to passive whole body hyperthermia (PH) on physical capacity and cardio-respiratory efficiency in men-amateur athletes under the testing load of increasing intensity in laboratory thermal-neutral conditions. Twenty-eight amateur athletes (males, mean age 20.2 ± 2.1 y.o., game-based kinds of sports—football, handball, training experience—4 - 7 years) were randomized into two groups: experimental (14 people), who underwent 24 PH procedures, and control (14 people), who underwent 24 light training sessions in interval regime on elliptical gym apparatus. Results: Adaptation to PH was accompanied by moderate increase of aerobic efficiency and cardio-respiratory endurance in amateur athletes under thermally neutral conditions, while interval training in the control group showed no reliable changes in efficiency. Conclusion: A 10-week course of PH procedures leads to the increase of peak oxygen consumption, oxygen consumption at the level of anaerobic threshold, and heart efficiency (enhancement of oxygen pulse values), as well as efficiency of pulmonary ventilation and bronchial conductance, which we consider to be cross effects of adaptation to passive whole-body repetitive hyperthermia.展开更多
目的观察异丙酚对全身高温(whole body hyperthermia,WBH)导致的老年大鼠认知功能障碍和海马区神经元凋亡的影响。方法采用热辐射法建立大鼠WBH模型,用脱氧核糖核苷酸末端转移酶介导的缺口末端标记法(TUNEL)检测海马神经元凋亡,免疫组...目的观察异丙酚对全身高温(whole body hyperthermia,WBH)导致的老年大鼠认知功能障碍和海马区神经元凋亡的影响。方法采用热辐射法建立大鼠WBH模型,用脱氧核糖核苷酸末端转移酶介导的缺口末端标记法(TUNEL)检测海马神经元凋亡,免疫组织化学法检测海马神经元天冬氨酸特异性半胱氨酸蛋白酶-3(caspase-3)蛋白的表达;用Morris水迷宫试验检测大鼠的认知功能。结果WBH过程中用异丙酚麻醉,能够减少海马神经元caspase-3蛋白的表达和海马神经元的凋亡,减轻大鼠的认知障碍。结论异丙酚能减少WBH引起的大鼠海马神经元凋亡,减轻WBH导致的大鼠认知功能障碍。展开更多
文摘Objective: The research was carried out to test the influence of adaptation to passive whole body hyperthermia (PH) on physical capacity and cardio-respiratory efficiency in men-amateur athletes under the testing load of increasing intensity in laboratory thermal-neutral conditions. Twenty-eight amateur athletes (males, mean age 20.2 ± 2.1 y.o., game-based kinds of sports—football, handball, training experience—4 - 7 years) were randomized into two groups: experimental (14 people), who underwent 24 PH procedures, and control (14 people), who underwent 24 light training sessions in interval regime on elliptical gym apparatus. Results: Adaptation to PH was accompanied by moderate increase of aerobic efficiency and cardio-respiratory endurance in amateur athletes under thermally neutral conditions, while interval training in the control group showed no reliable changes in efficiency. Conclusion: A 10-week course of PH procedures leads to the increase of peak oxygen consumption, oxygen consumption at the level of anaerobic threshold, and heart efficiency (enhancement of oxygen pulse values), as well as efficiency of pulmonary ventilation and bronchial conductance, which we consider to be cross effects of adaptation to passive whole-body repetitive hyperthermia.
文摘目的探讨全身高温对全凭静脉麻醉中脑电双频谱指数(BIS)的影响并探讨其发生机制。方法19例次晚期癌症患者,采用ET-SPACET红外线全身热疗系统加温使体温达40.5℃并维持1 h,丙泊酚静脉麻醉,监测体温升高过程中心率(HR)、血压(BP)、脑电双频谱指数(BIS)等指标的变化情况。结果BIS随着体温的升高而升高,38.5℃~39.5℃时BIS值与基础值相比,差异有统计学意义(P<0.05),当体温升高到40℃~40.5℃时BIS值开始下降,在40.5℃维持1 h BIS值恢复到基础水平。HR在各体温点持续加快且差异有统计学意义(P<0.05)。收缩压(SBP)在37.5℃、39℃、40.5℃持续1 h差异无统计学意义(P>0.05),其他温度段差异有统计学意义(P<0.05)。舒张压(DBP)与平均压(MBP)差异均无统计学意义(P>0.05)。结论升温过程中机体产生应激反应,使BIS增高。体温达到最高平台期后,BIS恢复到常态。
文摘目的观察异丙酚对全身高温(whole body hyperthermia,WBH)导致的老年大鼠认知功能障碍和海马区神经元凋亡的影响。方法采用热辐射法建立大鼠WBH模型,用脱氧核糖核苷酸末端转移酶介导的缺口末端标记法(TUNEL)检测海马神经元凋亡,免疫组织化学法检测海马神经元天冬氨酸特异性半胱氨酸蛋白酶-3(caspase-3)蛋白的表达;用Morris水迷宫试验检测大鼠的认知功能。结果WBH过程中用异丙酚麻醉,能够减少海马神经元caspase-3蛋白的表达和海马神经元的凋亡,减轻大鼠的认知障碍。结论异丙酚能减少WBH引起的大鼠海马神经元凋亡,减轻WBH导致的大鼠认知功能障碍。