BPK 142 Lecture Notes - Lecture 6: Erector Spinae Muscles, Spinal Disc Herniation, Heavy Object

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 142
• Professor: R.Craig Asmundson

Document Summary

Qualitative analysis - a non-numerical description of a movement based on direct observation. Quantitative analysis - a movement is analyzed numerically based on measurements from data collected during the performance of the movement. This type of analysis is usually conducted by researchers. Mass the quantity of matter contained in an object. Units = newtons (n) 1 n = (1 kg) (1 m/s2) Weight the amount of gravitational force exerted on a body. Weight = mass x acceleration of gravity = mag. If a person has a mass of 80 kg, his weight = (80 kg) (9. 81 m/s2) = 785 n. Torque the product of force and the perpendicular distance from the fo(cid:396)(cid:272)e"s li(cid:374)e of a(cid:272)tio(cid:374) to the a(cid:454)is of (cid:396)otatio(cid:374). It may be thought of as rotary force. Torque = force (n) x moment arm (m) Moment arm the pe(cid:396)pe(cid:374)di(cid:272)ula(cid:396) dista(cid:374)(cid:272)e (cid:271)et(cid:449)ee(cid:374) the fo(cid:396)(cid:272)e"s li(cid:374)e of action and the axis of rotation.