CAJ | 학술논문

目的检测健康老年人股四头肌的功能,分析其相关因素,建立老年人股四头肌功能的正常值. 方法 60例老年人纳入研究,股四头肌功能测试包括三项指标:磁刺激股神经诱发的最大肌颤搐张力(TwQmax)、最大主动收缩力(QMVC)、耐力时间.对受试者的日常运动(PA)进行量化分析并评分,对身高、体质量、肌肉体积等进行人体学测量. 结果股四头肌功能3项检测结果在男女组均呈正态分布.TwQmax、QMVC和耐力时间的均值及正常范围在男性组分别为[13.86(10.53～17.65)]kg、[42.06 (34.45～49.67)]kg、[81.08(58.52～103.66)]s,在女性组分别为[7.41(6.02～9.52)]kg、[29.40 (24.66～33.82)]kg、[83.44(60.81～106.67)]s.回归分析结果显示,股四头肌功能与受试者的性别、PA评分、身高、体质量及肌肉体积等因素相关. 结论老年健康者股四头肌功能在人群中呈正态分布,其与受试者的性别、体质量等多因素有关,而肌肉运动情况是影响肌肉功能的最主要因素.
목적 검측건강노년인고사두기적공능,분석기상관인소,건립노년인고사두기공능적정상치. 방법 60례노년인납입연구,고사두기공능측시포괄삼항지표:자자격고신경유발적최대기전휵장력(TwQmax)、최대주동수축력(QMVC)、내력시간.대수시자적일상운동(PA)진행양화분석병평분,대신고、체질량、기육체적등진행인체학측량. 결과 고사두기공능3항검측결과재남녀조균정정태분포.TwQmax、QMVC화내력시간적균치급정상범위재남성조분별위[13.86(10.53～17.65)]kg、[42.06 (34.45～49.67)]kg、[81.08(58.52～103.66)]s,재녀성조분별위[7.41(6.02～9.52)]kg、[29.40 (24.66～33.82)]kg、[83.44(60.81～106.67)]s.회귀분석결과현시,고사두기공능여수시자적성별、PA평분、신고、체질량급기육체적등인소상관. 결론 노년건강자고사두기공능재인군중정정태분포,기여수시자적성별、체질량등다인소유관,이기육운동정황시영향기육공능적최주요인소.
Objective Backgrounds and Objectives Skeletal muscle dysfunction is an important systemic manifestation of several diseases such as chronic obstructive pulmonary disease and chronic heart failure.Quadriceps function assessment was used in majority of the studies for assessment of peripheral skeletal muscle function as it is readily accessible and is a primary locomotor muscle.Appropriate evaluation of the prevalence and severity of quadriceps dysfunction relies on the proper control data from the age-matched normal subject.So,the present study was aimed to measure the quadriceps function in healthy elderly,to investigate the multiple factors related to quadriceps functions,and to establish the normal ranges for quadriceps functional performance in healthy elderly.Methods Sixty healthy volunteers were recruited for the study.Quadriceps function was assessed by measurement of the following 3 items:maximum of twitch tension (TwQmax) induced by magnetic stimulation of femoral nerve,maximal volitional contraction (QMVC),and endurance time.The intensity and frequency of quadriceps exercises were quantified with physical activity (PA) scores by using a special PA questionnaire.Anthropometric measurements such as height,weight and mid-thigh muscle mass (MTMC) were measured in all of the subjects.Multiple regression models were developed by stepwise method to determine the independent factors respectively contributing to the quadriceps functional performance.Results Quadriceps functional tests results showed that the data of the three items fit normal distributions in both female and male subjects,and the gendcr-related difference was observed in quadriceps strength,with TwQmax and QMVC being significantly decreased in female than in male subjects.The mean values and normal ranges for TwQmax,QMVC,and endurance time were [13.86(10.53-17.65)] kg,[42.06(34.45-49.67)] kg,and [81.08(58.52-103.66)] second,respectively,in male subjects; and they were [7.41(6.02-9.52)] kg,and [29.40(24.66-33.82)] kg,and [83.44 (60.81-106.67)] second,respectively,in female subjects.Stepwise regression correlation analysis showed that QMVC was related with sex,PA scores and weight (R2=0.61,P＜0.01) ; endurance time was predicted by PA scores,MTMC,body weight and sex (R2 =0.58,P ＜0.01) ; and TwQmax was predicted by sex,height and PA scores (R2 =0.67,P＜0.01).Conclusions Our study results demonstrate that quadriceps functional performance fits normal distributions in healthy elderly,and that quadriceps function is related to multiple factors such as subjects' sex,muscles exercises,weight,height,muscle mass,and etc,with muscles exercises being the most significant one,except of gender.We conclude that muscles exercises take a very important role in muscles functional performance in healthy elderly.