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ATTR 362: Muscular Strength and Endurance
Transcript of ATTR 362: Muscular Strength and Endurance
Sliding Filament Theory
Action potential >> motor neuron fires >> muscle fibers contract (sliding filament)
Motor units will fire at the same time
The more motor units recruited, the stronger the muscles response
IN YOUR OWN WORDS
define the term and explain the significance
Types of Muscle Fibers
Quick, forceful contractions
Power, explosive muscles
maximum force a muscle or muscle group can exert
strength applied over a distance for a specific amount of time. P = Fd/T
ability of a muscle or muscle group to perform repeated contractions against a less-than-maximal load
Relationship Between Strength and Endurance
Types of Muscle Activity
Open and Closed Kinetic Chain Activities
Open Kinetic Chain (OKC):
distal segment moves freely
Closed Kinetic Chain (CKC):
distal segment is weight bearing
List 2 OKC and 2 CKC exercises
Muscle will adapt to the demands placed on it
Low weight, high reps = endurance
High weight, low reps = strength
Exercises should mimic stresses during functional activity
Progress within patients' tolerance.
Pain = too difficult/too much
Challenging but attainable
To continue to produce strength gains, the load must progressively increase.
DeLorme and Watkins
Review these on your own!