Unformatted text preview: Assessing'Strength'and'Muscular'
• Review as needed from Muscle
! Strength: ◦ Test the ability to generate maximal contractile force
against the resistance
for a single contraction
◦ no extraneous body movement ! Endurance: ◦ Test the ability for a muscle (group) to exert submaximal
force over a period of time
◦ Rate of /or amount of decrement in force (final / initial)
over a fixed duration Strength & endurance
can be assessed for static & dynamic
! Isometric Contraction:
– Iso = same; metric = length
– Immoveable resistance where there is
joint movement • Dynamic Contraction:
– visible joint movement
– Concentric, eccentric, isokinetic Isometric'tests:'Sta4c'Strength'and'
• Dynamometers, cable tensiometers, load cells
• Testing procedures depend on type of test and
• Hand dynamometer –gripping, adjust according
to hand size, spring.
– Often used in clinical settings and related to
clinical outcomes Dynamic contractions
• Concentric contractions
– Muscle shortening (arm curl – decreasing joint angle) • Eccentric contractions
– Muscle lengthening (arm curl – increasing joint angle) • In theory, these are isotonic contractions
– The weight lifted is constant while torque changes
– HOWEVER, due to changes in musc...
View Full Document
- Fall '12
- Endurance, Cardiovascular Endurance, muscle group