CAJ | 학술논문

目的：了解老年人下肢特殊肌群肌力和几种功能性活动测试与步速的相关性。方法341名居家老年人(65~94岁)，按步速<0.8 m/s为肌少症的筛查标准，分为可疑肌少症组(n=137)和正常组(n=204)。比较两组人群的基本特征，下肢肌群(包括髂腰肌、股四头肌、腘绳肌、胫前肌)肌力，单腿站立测试、Berg平衡量表、功能性步态测试、功能性伸展测试、计时起立-走测试评分，及其与步速的相关性。结果两组间体重、身高无显著性差异(P>0.05)，可疑肌少症组年龄较大(P<0.05)。双侧下肢肌群肌力两组间无显著性差异(P>0.05)；髂腰肌、股四头肌、腘绳肌肌力与步速呈弱相关(r=0.121~0.227, P<0.05)，胫前肌肌力与步速无显著相关性(P>0.05)。步速与单腿站立试验呈弱相关(r=0.121~0.236, P<0.05)，与Berg平衡量表、功能性步态测试、功能性伸展试验评分呈中度相关(r=0.479~0.584, P<0.001)，与计时起立-走测试评分呈中度负相关(r=-0.502, P<0.001)；除功能性伸展测试(P=0.28)外，其他测试两组间均有非常高度显著性差异(P<0.001)。结论诊断肌少症不能仅依靠肌力，还应结合功能性活动。
목적：료해노년인하지특수기군기력화궤충공능성활동측시여보속적상관성。방법341명거가노년인(65~94세)，안보속<0.8 m/s위기소증적사사표준，분위가의기소증조(n=137)화정상조(n=204)。비교량조인군적기본특정，하지기군(포괄가요기、고사두기、객승기、경전기)기력，단퇴참립측시、Berg평형량표、공능성보태측시、공능성신전측시、계시기립-주측시평분，급기여보속적상관성。결과량조간체중、신고무현저성차이(P>0.05)，가의기소증조년령교대(P<0.05)。쌍측하지기군기력량조간무현저성차이(P>0.05)；가요기、고사두기、객승기기력여보속정약상관(r=0.121~0.227, P<0.05)，경전기기력여보속무현저상관성(P>0.05)。보속여단퇴참립시험정약상관(r=0.121~0.236, P<0.05)，여Berg평형량표、공능성보태측시、공능성신전시험평분정중도상관(r=0.479~0.584, P<0.001)，여계시기립-주측시평분정중도부상관(r=-0.502, P<0.001)；제공능성신전측시(P=0.28)외，기타측시량조간균유비상고도현저성차이(P<0.001)。결론진단기소증불능부의고기력，환응결합공능성활동。
Objective To explore the relevance between gait speed and muscle strength of lower extremities, or several kinds of physical functional tests. Methods 341 community-dwelling individuals (160 males, 181 females) aged 65-94 years were selected. They were divid-ed into suspected sarcopenia group (n=137) and normal group (n=204) by their gait speed less or more than 0.8 m/s. It was compared be-tween both groups with the basic physical characteristics, strength of iliopsoas, quadriceps, hamstrings and tibialis anterior, and the scores of One Leg Standing Test, Berg Balance Scale, Functional Gait Assessment, Functional Stretch Test and Timed Up and Go Test. Results The subjects were older in the suspected sarcopenia group than in the normal group. The difference of body weight, height were not statistically significant between groups. The strength of the muscles in bilateral lower limbs was not significantly different between both groups (P>0.05), while the gait speed positively correlated with the strength of iliopsoas, quadriceps and hamstrings (r=0.121-0.227, P<0.05), but not with the tibialis anterior (P>0.05). Gait speed positively correlated with the scores of One Leg Standing Test, Berg Balance Scale, Functional Gait Assessment, Functional Stretch Test (P<0.05), and negatively correlated with the score of Timed Up and Go Test (r=-0.502, P<0.001). The scores of all the tests were significantly different between 2 groups (P<0.05), except that of Functional Stretch Test (P=0.28). Conclu-sion Sarcopenia diagnosis is not only depended on the strength of muscle of lower extremity, but also their functions.