CAJ | 학술논문

目的：研究不同负荷强度的长期抗阻运动对健康中老年男性和女性颈动脉顺应性的影响。方法：从无吸烟史且半年内未进行过系统锻炼的健康自愿者中选取年龄在50～60岁之间的男性47名和女性43名作为受试者，按不同性别及训练负荷强度随机分成4个实验组，进行为期32周的抗阻力量训练计划，每周训练3次。实验前及训练中每隔2个月对颈动脉顺应性指标CAC和p各测量一次，共计5次；采用三因素重复测量方差分析法和事后多重比较检验考察不同时间段各组实验数据间的差异。结果：1）中强度负荷下，受试者CAC较训练前明显下降（P〈0．05），降低幅度在S—S段和S4-S2段有显著性差异（P〈0．05），且S至S4段的男性降幅明显高于女性（P〈O．05）；颈动脉僵硬度8较训练前明显上升（P〈0．05），升高幅度在Sz—S段和S—S段有显著性差异（P〈0．05），且S至S段的男性增幅明显高于女性（P〈0．05）。2）低强度负荷下，受试者CAC各时段较训练前无明显降低（P〉0．05），仅有男性降幅较女性偏高的趋势；颈动脉僵硬度B各时段较训练前无明显升高（P〉O．05），仅有男性增幅较女性偏高的趋势。结论：1）中强度负荷的长期抗阻训练在前4个月会增加健康中老年人的血管硬化度，颈动脉顺应性显著降低，且男性降幅明显高于女性。2）中强度负荷的长期抗阻训练对健康中老年人血管硬化度的影响效应随时间而逐渐减弱，颈动脉顺应性在后4个月已无显著性降低。3）低强度负荷的长期抗阻训练对健康中老年人的血管硬化度无明显影响，不会加速其随增龄的颈动脉顺应性降低。
목적：연구불동부하강도적장기항조운동대건강중노년남성화녀성경동맥순응성적영향。방법：종무흡연사차반년내미진행과계통단련적건강자원자중선취년령재50～60세지간적남성47명화녀성43명작위수시자，안불동성별급훈련부하강도수궤분성4개실험조，진행위기32주적항조역량훈련계화，매주훈련3차。실험전급훈련중매격2개월대경동맥순응성지표CAC화p각측량일차，공계5차；채용삼인소중복측량방차분석법화사후다중비교검험고찰불동시간단각조실험수거간적차이。결과：1）중강도부하하，수시자CAC교훈련전명현하강（P〈0．05），강저폭도재S—S단화S4-S2단유현저성차이（P〈0．05），차S지S4단적남성강폭명현고우녀성（P〈O．05）；경동맥강경도8교훈련전명현상승（P〈0．05），승고폭도재Sz—S단화S—S단유현저성차이（P〈0．05），차S지S단적남성증폭명현고우녀성（P〈0．05）。2）저강도부하하，수시자CAC각시단교훈련전무명현강저（P〉0．05），부유남성강폭교녀성편고적추세；경동맥강경도B각시단교훈련전무명현승고（P〉O．05），부유남성증폭교녀성편고적추세。결론：1）중강도부하적장기항조훈련재전4개월회증가건강중노년인적혈관경화도，경동맥순응성현저강저，차남성강폭명현고우녀성。2）중강도부하적장기항조훈련대건강중노년인혈관경화도적영향효응수시간이축점감약，경동맥순응성재후4개월이무현저성강저。3）저강도부하적장기항조훈련대건강중노년인적혈관경화도무명현영향，불회가속기수증령적경동맥순응성강저。
Objective：To determine the effects of chronic resistance training in different intensity load on carotid arterial compliance （CAC） in middle-aged and older male and female, in order to provide scientific theoretical basis for fitness exercise prescription of different populations. Methods ： Selected men （ n = 47 ） and women （ n = 43 ） aged 50 ~ 60 years old from healthy volunteers who had no smoking and exercise history in half a year, to randomly divided into 4 experiment-groups, who participated in a 32-weeks resistance training program for 3 times a week. Carotid arterial compliance and ~-stiffness index were determined before and after resis- tive training in every 2 months. Compared and analyzed the differences between sets of data in different times by three-factor variance analysis and post hoc multiple comparisons test. Re- suits： 1） Under moderate-intensity load, CAC decreased significantly compared with that before training （P~0.05）. The lowered range of CAC had significant difference in time of Sz-So and SO-So, which was obviously higher in male than female （P~0.05）. Besides, D-stiffness index increased significantly compared with that before training （P~0.05）. The increasing ampli- tude had significant difference in time of So-So and S~-So, which was obviously higher in male than female （P~0.05）. 2） Under low-intensity load, CAC in different times did not decrease significantly compared with that before training （P~ 0.05）, but only a higher trend of low- ered range in male than female. Besides, ~-stiffness index in different times did not increase sig- nificantly compared with that before training （P~0.05）, but only a higher trend of increasing amplitude in male than female. Conclusions： 1） Chronic resistance exercise in moderate-intensi- ty load decreased carotid arterial compliance in middle-aged and older adults in the first four months, which was more obvious in male than female. 2） The influential effect of chronic re- sistance exercise in moderate-intensity load on stiffness of arteries in middle-aged and older a-dults gradually diminished with the extension of training time, and carotid arterial compliance did not reduce significantly after four months. 3） Chronic resistance exercise in low-intensity load did not accelerate stiffness of arteries and the reduction of carotid arterial compliance with age growth in middle-aged and older adults.