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4On the condition of unilateral holding load and enough high load levels, the activation pattern of the two lumbar muscles existed contralateral enhanced effect;(5)The back weigh loading had symmetrical effect for lumbar multifidus and erector spinae.(6)The left and right hand weight loading had the same effect in activation level; The lumbar muscles activation of went upstairs were higher than the plain and downstairs

在行走過程中人人上人人插人人操，隨著負(fù)荷等級的增加黄色网站国产日本，豎脊肌收縮力增大，其AEMG值也相應(yīng)增大在线视频狼友；左手提與右手提對腰部兩觀察肌肉的激活程度具有同等效果日韩二区网站；上樓時(shí)腰部豎脊肌、多裂肌的激活強(qiáng)度顯著大于平地和下樓時(shí)的激活強(qiáng)度毛片国产一国产AN毛片，而平地與下樓之間不存在差異欧美人妻视频一区二区三区。