Musculoskeletal testing (second half) Flashcards
how do you measure grip endurance ?
using hand dynamometer, record initial force and final force at end of 1 minute
- final force/initial force x 100 = % decline in force production
how is the flexed arm hang scored? proper position?
scored as the # of seconds the participant can support their body weight with the chin over the pull up bar, pronated grip
proper form for wall sit
flat against wall, knees 90 degrees, hands at side
4 static endurance tests
grip endurance, flexed arm hang, wall sit, back endurance,
how do you test static endurance of the trunk
test time to failure,
extension: flat back, trunk extended over bench, lower body secured
lateral flexors: side plank/bridge, torso elevated and supported; hips of floor
what do you do before administering back endurance test
prescreen for LBP
(lower back pain)
- have them lie face down and extend one leg at a time off floor and then one arm and opposite leg at same time
what is the 30 second chair stand test and what does it measure
- how do you score
- measures lower body endurance
- with the chair positioned against wall have client sit in chair with arms crossed across chest, feet flat on floor
- count the # of reps the client can complete in 30s (ROM touch seat–> full extension)
in the seated chair test if more than 1/2 way when the time expires in the last rep what do you do?
count it as a rep, if less than 1/2 the way then dont count
what are the pros of isotonic strength testing (5)
- relatively inexpensive
- accessible- different types of equipment can be used
- easy to learn how to administer most tests
- construct and face validity
- correlates better with sports performance
what are the cons of isotonic strength testing (5)
- cant obtain strength curve - measures weakest point in ROM
- risk of injury if free weights are used
- equipment specific (eg. norm specific)
- can be time consuming
- can be difficult to find 1 RM, involves technique
what are the pros of isometric testing (3)
- norm data easily accesible
- can be used to test a variety of muscle groups
- strong research base
what are the cons fo isometric testing (3)
- only one joint angle can be tested at a time
- does not provide a strength curve
- limited transferability to real life movement
what is the best equipment to use for strength testing
constant resistance machine or free weights
5 points about variale resistance machines (pros and cons)
- difficult to match strength curves of difference muscle groups
- difficult to assess clients actual strength because force is altered throughout ROM
- no spotter required
- dont fit everyone
- more beneficial for training than testing
5 points about constant resistance machines (pros and cons)
- expensive but safe
- limit ROM and plane of movement
- no spotter required
- dont fit everyone
- some have large weight increments
3 points of free weights (pros and cons)
- increase neuromuscular coordination
- allow full ROM
- spotter required
- force plates
- cybex
- WAT
- RM lifts with a speed component
- vertical jump
- margeria
- sprints
- snatches, cleans
- -> all examples of ways to measure what?
power
any test that has a speed component
______ test and _____ are not highly correlated with mechanically measured power
jumping tests, sprints
–> ppl of different weights will have different power (more mass = more power)
the peak capability of a muscle to generate force
muscular power
the maximum rate of ATP utilization using anaerobic (without oxygen) metabolism, per unit of time
anaerobic power
the cunningham and faulkner tests are measures of ?
anaerobic capacity