单项选择题
A.肱三头肌 B.三角肌 C.胸肌 D.斜方肌
A.仰卧起坐-仰卧两头起-腿贴墙仰卧起坐-直角悬垂举腿 B.直角悬垂举腿-腿贴墙仰卧起坐-仰卧两头起-仰卧起坐 C.直角悬垂举腿-仰卧两头起-仰卧起坐-腿贴墙仰卧起坐 D.腿贴墙仰卧起坐-直角悬垂举腿-仰卧两头起-仰卧起坐
A.向心收缩 B.离心收缩 C.等张收缩 D.静力收缩