KIN 155 Lecture Notes - Lecture 9: Electromyography
4 Apr 2016
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Stability is determined by relationship between center of mass (com) and base of support (bos) Predictive (feed forward) before the instability: eg. Anticipatory postural adjustment moving your center of mass before standing on one foot while someone is nudging (cid:1) (cid:1) (cid:1) (cid:1) your shoulder. Kinematics: movement: joint angle, displacement, velocity . How do you measure sway : center of pressure sway. A kinetic measure (forces: center of mass sway. Forces that you generate causes center of balance to get back to where it should. Center of pressure always goes further , the force that stabilizes venter of mass (cid:1) On the wii we were measuring : static balance center of pressure sway (cid:1) (cid:1) How do you measure reactions: emg. Perturbations (internal and external: pushing somebody can be an example of an external perturbation (sebastian, internal: a mistake you make, induction instability.
