CONTRALATERAL V IPSILATERAL CANE USE: Effects on Muscles Crossing the Knee Joint
CONTRALATERAL V IPSILATERAL CANE USE: Effects on Muscles Crossing the Knee Joint
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对侧 V 同侧手杖的使用：对穿过膝关节的肌肉的影响
DOI：
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发表时间：
1992
影响因子：
3
通讯作者：
J. Nicholas
中科院分区：
文献类型：
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作者：
M. Vargo;L. Robinson;J. Nicholas
尽管对侧使用手杖已被证明可以减少髋关节的肌肉活动，但对膝盖的影响却知之甚少。我们测量了 10 名身体健全的受试者膝盖周围的肌肉活动。我们同时记录了各种站立动作期间右侧股四头肌、内侧和外侧腘绳肌、腓肠肌和髋外展肌的综合校正表面肌电活动：两腿站立、无支撑单腿站立和通过同侧或对侧手杖施加最大、中等（20%体重）或最小（10%体重）力的单腿站立。肌电活动以每块肌肉在无支撑的单腿站立期间记录的百分比表示。当通过对侧手杖放置最大重量时，髋部外展肌活动最低（66%），而同侧最大重量时髋部外展肌活动最高（424%）。当对对侧手杖施加最大和中等力量时，内侧腘绳肌活动分别增加 404% 和 200%，但同侧手杖没有变化。在使用对侧手杖时，外侧腘绳肌也最活跃。使用手杖以中等或最小的力量（范围 57% 至 84%），股四头肌活动减少。使用手杖时，对侧（60% 至 66%）和同侧（75% 至 96%）腓肠肌活动下降。该数据表明，膝盖周围肌肉活动产生的力并不会因对侧手握拐杖而均匀减弱，甚至可能会增加。
Although using a cane contralaterally has been shown to reduce muscular activity across the hip joint, little is known about effects on the knee. We measured muscular activity around the knee in 10 able-bodied subjects. We simultaneously recorded integrated rectified surface electromyographic activity from the right quadriceps, medial and lateral hamstrings, gastrocnemius and hip abductors during various standing maneuvers: two-legged stance, unsupported one-legged stance and one-legged stance putting maximal, moderate (20% body weight) or minimal (10% body weight) force through an ipsilateral or contralateral cane. Electromyographic activity was expressed as the percentage of that recorded during unsupported one-legged stance in each muscle. Hip abductor activity was lowest when maximal weight was placed through a contralateral cane (66%) and highest with maximal weight ipsilaterally (424%). Medial hamstrings activity increased by 404% and 200%, respectively, when maximal and moderate force was applied to a contralateral cane, although there was no change with ipsilateral cane. Lateral hamstrings were also most active during contralateral cane use. Quadriceps activity decreased using a cane in either hand with moderate or minimal force (range 57 to 84%). Gastrocnemius activity decreased during contralateral (60 to 66%) and ipsilateral (75 to 96%) cane use. This data suggests that forces generated by muscular activity around the knee are not uniformly diminished by holding a cane in the contralateral hand and may even be increased.