Resisted Exercise Flashcards
What are the three types of muscle fibres?
Slow
Fast
Intermediate
What are the features of slow fibres?
For endurance Red High fatigue resistance High capillary supply Oxygen storage
What are the features of fast fibres?
For power
White
Bigger for increased force and tension
Lower capillary supply - anaerobic
What are the features of intermediate fibres?
Pink
Fast contraction
Anaerobic
Define muscle strength
The ability a muscle has to produce tension
Define muscle power
Maximum strength per unit of time
Define muscle endurance
Ability to sustain contractions over a period of time
Define strength
Ability to control forces produced to carry out functional activities
What factors does muscle strength depend on
Cross sectional area of muscle Structure of CT Number of motor units Fibre type Lever size Age and fitness Cognition Genetics Type of contraction Muscle length
What are the different types of resisted exercise?
Patient own body weight - push ups Manual resistance Pnf techniques Free weights Mechanical resistance
What are the three types of muscle work?
Isometric
Isotonic - concentric - accelerating
or eccentric - decelerating
Isokinetic - speed of limb
What happens to the sarcomere in outer range?
No overlap
No cross bridges formed
What happens to the sarcomere in mid range?
All myosin in contact with actin
Many cross bridges made
What happens to the sarcomere in inner range?
Not as many cross bridges
How much force is there with a concentric contraction that’s:
Slow
Fast
Slow contraction = high force
Fast contraction = small force
As cross bridges cannot form due to filaments moving too fast