Kinesiology 1080A/B Lecture Notes - Myocyte, Psychological Refractory Period, Upper Motor Neuron

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 1080A/B
• Professor: Matthew Heath

Document Summary

Motor unit types: fast twitch, fatigable (ff) (fast motor unit) Innervates fast twitch muscle fibers: fast twitch, fatigue resistant (fr) Innervates fast twitch and slow twitch: slow twitch muscle fibers, Motor unit and muscle fiber types in athletes. Red areas dictate more blood (heam) in one area and mean that they have more oxygen or iron being given to them. Paraplegics are not able to sustain long lasting movements. Older adults primarily have slow twitch muscle fibers (difference between younger adults and older adults falling). Postural stability can be increased by increasing fast twitch ratio (training). Dave kosia"study found that wobble boarding training that 6 week training in older adults can give an increase in fast twitch ratio, which gave an improvement in overall balance. The types of neurons associated with motor cool are motor units (efferent neurons) and sensory (afferent) neurons and the interneuron. The motor neurons are specified to send messages away from the central nervous.