Intro to Muscle Performance Exams

What type of strength testing uses repetition maximum?

isotonic

What type of strength testing uses a dyanmometer?

isokinetic

What type of strength testing uses MMT, dynamometer, and HHD?

isometric

what is isotonic testing

joint movement occurs against a fixed or variable external load

what is isokinetic testing?

joint movement that occurs at a fixed speed, load is matched to maintain

what is isometric testing?

static testing with no apparent joint motion

define MMT

a system of measurement using manually applies resistance to determine strength of a muscle

what is a 5 MMT

Normal- can move through full available ROM against gravity and hold against maximal manual resistance

which MMT test should you start with on a patient

Fair test (full ROM against gravity) then move up or down accordingly

what is a break test?

most commonly used in mmt, where pt applies resistance and tells patient to resist

what variables affect “normal” mmt results

size, age, gender

what should be used as comparison of normal during an mmt?

the good side

what is it important to prevent during MMT?

substitution

what MMT grades have strong relationships w/ other strength measures?

grades below 4

What does an MMT grade of 4 mean?

good- able to move through full ROM against gravity and hold against moderate resistance

What does an MMT grade of 3+ mean?

fair+ : able to move through full ROM against gravity and hold against minimal resistance

What does an MMT grade of 3 mean?

fair : able to move through full ROM against gravity

What does an MMT grade of 3- mean?

fair- : able to move through more than half ROM against gravity

What does an MMT grade of 2+ mean?

poor+ :able to move through less than half RM against gravity

What does an MMT grade of 2 mean?

poor: able to move through full ROM in gravity minimized position

What does an MMT grade of 2- mean?

poor- : able to move through partial ROM gravity minimized

What does an MMT grade of 1 mean?

Trace: no joint motion, gravity minimized position, muscle contraction palpable or observable

What does an MMT grade of 0 mean?

no observable or palpable muscle contraction