A.1/2 B.1/3 C.2/3 D.1/4 E.3/4
A.10~20歲B.20~30歲C.30~40歲D.40~50歲E.50~60歲
A.向心性收縮 B.離心性收縮 C.等動收縮 D.等長收縮 E.靜力性收縮