PHYS30005 Lecture Notes - Lecture 33: Motor Unit, Skeletal Muscle, Overtraining

• School: University of Melbourne
• Department: Physiology
• Course: PHYS30005
• Professor: Professor

Document Summary

Compare and contrast the adaptations of skeletal muscle to: Muscles will adapt optimally to exercise that moderately exceeds their capacity. Requires gradual progression in training load in order to maximize performance. Limits to the physiological and anatomical development that can be achieved. System (muscle, tissue, organ, cell) is subjected to a perturbing stimulus: alarm phase (reaction to change in homeostasis, resistance phase (responds to change, exhaustion phase (overwhelms the system overtraining) avoid this! All of these activation patterns are abolished (size principle is abolished: recruit large motor units almost straight away. Activates all motor units synchronously and with the same impulse pattern. Standardised model adaptive responses occur in a reproducible, well- defined manner. Adaptations occur in a shorter period compared with voluntary activity. Adaptations restricted to target muscle -> minimise systemic effects. Doesn"t induce muscle damage in rodents (clean investigative model) Principles of training (1) overload (progressive overload)