【摘要】 目的 观察经皮穴位电刺激（TEAS）对健康人群心功能的影响，为针灸技术应用于在轨航天员心功能防护提供依据。方法 选取天津中医药大学学生24名，采用随机数表法将受试者按1∶1随机分为试验Ⅰ组和试验Ⅱ组。两组受试者均使用TEAS连续干预14 d。试验Ⅰ组每日干预1次，试验Ⅱ组每日干预2次。评价受试者的心肺耐力和心率变异性。结果 两组受试者最大摄氧量均增加，试验Ⅰ组干预第14天与干预前相比，最大摄氧量增加，差异有统计学意义（P<0.05）。两组组内低频功率、低频功率/高频功率干预前后相比，差异无统计学意义（均P>0.05）。两组低频功率，低频功率/高频功率同一观察时间点相比，差异无统计学意义（P<0.05）。两组干预后最大公斤摄氧量、肺通气量分别与本组干预前相比均增加，差异有统计学意义（均P<0.05）；两组最大运动心率均呈下降趋势。安全性方面，两组NRS评分相比，差异无统计学意义（P>0.05）；两组4级安全标准评价相比，差异无统计学意义（P>0.05）。结论 TEAS可有效增强健康人群心功能储备，干预措施安全可靠，有望成为改善在轨航天员心功能的有效手段。更多还原

【Abstract】 Objective To investigate the effect of Transcutaneous Electrical Acupoint Stimulation(TEAS) on cardiac function in healthy individuals, providing experimental evidence for the application of acupuncture techniques in improving astronauts’ cardiac function during space missions. Methods A total of 24 subjects were randomly assigned in a 1:1 ratio to either the Trial Group I or Trial Group II using a random number table. Both groups received continuous TEAS intervention for 14 days, with Trial Group I receiving one session per day and Trial Group II receiving two sessions per day. Cardiopulmonary endurance and heart rate variability were evaluated before and after the intervention. Results Maximal oxygen uptake increased in both groups, with Trial Group I showing a statistically significant increase(P<0.05). There were no significant differences in LF or LF/HF indices within or between groups before and after intervention(all P>0.05). Both groups demonstrated significant increases in maximal oxygen uptake per kilogram and pulmonary ventilation(all P<0.05), and a declining trend in maximal exercise heart rate was observed. Regarding safety, no significant differences were found in NRS scores and safety grading between the groups before and after treatment(all P>0.05). Conclusion TEAS can effectively enhance cardiac functional reserve in healthy individuals, with the intervention being safe and reliable, suggesting its potential as an effective method to improve cardiac function in astronauts during spaceflight.更多还原