HSS 2111 Study Guide - Midterm Guide: Human Musculoskeletal System, Myocyte, Linear Motion

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 2111
• Professor: Tien Nguyen

Document Summary

Biomechanics: study of mechanics of human musculoskeletal system. Force= strength sarcomeres run parallel to each other: proportional to cross-sectional area (volume) + thickness = independent of fibre length, *** the thicker the muscle belly, the stronger it is*** cross-sectional area/volume increases with resistance training (working out) Velocity: proportional to length = independent of cross-sectional area, sarcomeres run in series, *** the longer the muscle belly, the faster the muscle/more velocity *** *** the shorter the muscle belly, the slower the muscle/ less velocity **: muscle velocity is unaffected by resistance training (cid:894)thi(cid:374)k slo(cid:449) a(cid:374)d fast t(cid:449)it(cid:272)h fi(cid:271)(cid:396)es you (cid:272)a(cid:374) (cid:374)e(cid:448)e(cid:396) (cid:272)o(cid:374)(cid:448)e(cid:396)t the(cid:373), dete(cid:396)(cid:373)i(cid:374)ed ge(cid:374)eti(cid:272)ally(cid:895) Power= product of force (cross-sectional area) + velocity (fibre length) Keepi(cid:374)g st(cid:396)e(cid:374)gth (cid:272)o(cid:374)sta(cid:374)t fo(cid:396) (cid:373)o(cid:396)e ti(cid:373)e= less po(cid:449)e(cid:396) (cid:894)that"s (cid:449)hy ha(cid:448)e to i(cid:374)(cid:272)(cid:396)ease i(cid:374)te(cid:374)sity i(cid:374) gy(cid:373), o(cid:396) the(cid:374) plateau(cid:895) Keeping time constant, with less strength= less power. Keeping strength constant for less time= more power.