PT 5101 Lecture Notes - Lecture 7: Kinematic Chain, Motor Control, Short-Term Memory

• School: Northeastern University
• Department: Physical Therapy
• Course: PT 5101
• Professor: Hickey Mary

Document Summary

Kinetics: forces acting on the individual segment or combined segments of the body. Compression: pushes 2 surfaces together: axial compression pressure along spine with standing. Shear: slide one surface on another: h(cid:720)(cid:735)(cid:735)(cid:724)(cid:733)(cid:738) w(cid:727)(cid:724)(cid:733) y(cid:734)(cid:740) (cid:723)(cid:734)(cid:733)"(cid:739) (cid:740)(cid:738)(cid:724) (cid:735)(cid:737)(cid:734)(cid:735)(cid:724)(cid:737) (cid:721)(cid:734)(cid:723)y (cid:732)(cid:724)(cid:722)(cid:727)(cid:720)(cid:733)(cid:728)(cid:722)(cid:738) Torsion: twist about an axis: smaller muscle, build for holding power. 1st class: fulcrum in the center of force and load. 2nd class: load in the center of fulcrum and effort most inefficient. 3rd class: effort at the center or load and fulcrum most often in body. 2nd class: 1: >1 ratio biggest ma. 3rd class: 1: <1 ratio stress: or load, describes type of force applied strain: change in length of material as a result of tension linear strain: length change shear strain: angular change. Try to push people up to failure point, work hard enough to make them better. Feel tissues, know anatomy, know kinematics plastic region. Stretch after workout, when muscles already warmed up.