Biomechanics of Muscle Flashcards
Muscle contractile element
Myofibril
What is the force that a muscle can produce proportional to?
Cross section of the myofibril
What is the velocity and working range that a muscle can produce proportional to?
The length of the myofibril
The affects of increased temperature on muscle force
- Increased stimulation frequency
- Increased muscle efficiency
- Increased elasticity of elastic components
- Increased blood flow
Prolonged stimulation at a frequency that outstrips muscle ability to produce ATP
Fatigue
What does fatigue result in?
Decreased muscle tension
What is force proportional to?
Contraction time
Types of muscle dysfunctions
- Focal
- Global
Muscle dysfunctions involving adhesions, tendinopathies, and trigger pointss
Focal
Muscle dysfunctions involving weakness or tightness
Global
What is tone, or resistance to stretch controlled by?
- Biomechanical factors
- Neurological factors
Biomechanical factors that control tone, or resistance to stretch
- Matrix
- Ground substance
- Collagen within muscle/fascia
Neurological factors that control a muscle’s tone or resistance to stretch
- Muscle spindles
- Stretch reflex
