单项选择题
A.热身前B.热身后C.完成6min步行后即刻D.整理活动之后
A.改良跨栏拉伸(Modified hurdler stretch)B.向前推墙拉伸(Forward wall push stretch)C.跨式拉伸(Straddle stretch)D.腿交叉直立触摸脚尖(Cross-legged standing toe touch)
A.KarvonenB.DiaphragmaticC.valsalvaD.Anginal