Kinesiology 2236A/B Lecture Notes - Lecture 19: Autonomic Nervous System, Croatian Radiotelevision, Tachycardia

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

Document Summary

Lecture 19a autonomic dysregulation in concussed adolescents. Concussion: complex pathological changes to the brain, induced by biomechanical forces either directly to the head or the body, where forces are transmitted to the brain. Increased participation in high-risk sports (i. e. american football, hockey: symptom resolution, > one month. Proof of pns involvement: pns increase in hr, vagal withdrawal, sns increase in hr. Isometric handgrip (ihg: elicits rapid tachycardia (increase in hr, blunted in individuals with vagal dysfunction, aging population, individuals with cv disease you would see a smaller/slower increase of hr (graph) Isometric handgrip (ihg) as a diagnostic tool: the handgrip tool could be an effective objective diagnostic tool as it allows us to evaluate impairments in the interplay between sns and pns function, specifically, vagal control of hr. Study objective: compare the heart rate (hr) response during a brief isometric handgrip in concussed adolescents to controls.