Kinesiology 2236A/B Lecture Notes - Lecture 4: Muscle Contraction, Bursitis, Ultimate Tensile Strength

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2236A/B
• Professor: Dave Humphreys

Document Summary

Injury classification: used to be called acute or chronic, this was confusing because technically, all injuries are acute because something initiates them, now classified as, traumatic. Formerly acute: occurs when tissue loading is sufficient to cause sudden irreversible deformation of the tissue, usually in high speed sports with or without high energy contact, overuse. Seen in aerobic sports that require lengthy training schedules or in technical sports where a movement is repeated numerous times. What factors cause injuries: extrinsic/external, originating outside anatomical limits of a part. Intrinsic/internal: belonging to or lying within a given part. Muscle characteristics: contractile tissue with central function to generate power, well vascularized, leads to good o2 and nutrients, which leads to good healing. Generally occur in 2 ways: distention strains or pulled muscle, direct trauma, contusion/laceration. Strains usually occur at the musculotendinous junction: more common in 2 joint muscles.