Quiz 3 Flashcards
(125 cards)
what are the 3 key elements of muscle performance?
1) strength
2) power
3) endurance
what is muscle strength?
ability of contractile tissue to produce tension and a resultant force based on the demands placed on the muscle
what is muscle power?
related to strength and speed of movement
F x D/T
what is muscle endurance?
ability to perform low-intensity, repetitive, or sustained activities over a prolonged period of time
what can MMT give us insights into?
muscle strength
pain/level of irritability
differentiating inert vs contractile lesions
what is inert tissue?
ligaments and bursa
what is contractile tissue?
muscles and tendons
what is the accuracy of MMT based upon?
comparison w/a cohort of norms
if there is a greater difference bw active and passive tests is there likely a weakness or stiffness problem?
weakness
if there is a smaller difference bw active and passive tests is there likely a weakness or stiffness problem?
stiffness
what are contraindications for MMT?
unhealed fx/potential fx
post-surgery protective phase (6 wks for tendons)
inflammation/pain
dislocation
bone carcinoma
osteoporosis
myositis ossificans
what is grade 5 (normal)?
completes full ROM against gravity w/max resistance
inability of therapist to break contraction
what is a make test?
testing though ROM
what is a break test?
testing isometrically
what is grade 4 (good)
completes full ROM against gravity w/mod resistance
fails the break test with mod resistance
what is 4+?
completes full ROM against gravity w/mod to max resistance
what is 4-?
completes full ROM against gravity w/min to mod resistance
what is grade 3 (fair)?
complete full ROM against gravity w/o resistance
represents the “functional threshold”
what is 3+?
complete full ROM against gravity w/min resistance
what is 3-?
completes >50% <100% ROM against gravity w/o resistance
can passively go through full ROM
what is grade 2 (poor)?
completes full ROM in a “gravity-lessened” position
what is a gravity lessened position?
usually in a transverse plane or parallel to the ground
what is 2+?
initiates motion against gravity and completes <50% ROM
what is 2-?
unable to complete full ROM in “gravity-lessened” position