Muscle Strength Flashcards
Muscle Strength
Force muscle can produce with single maximal effort
Protocols
Pretest instructions
Paperwork
Resting data
Warm up
Monitoring
Cool down
Contractions
Isomentric
Isotonic
Isometric(Static) contraction
No visible change in joint angle
Isotonic(dynamic)
Visible change in join angle.
1. Concentric
2. Eccentric
3. Open kinetic Chain
4. Closed Kinetic Chane
5. Isokinetic
Concentric
Exert tension while muscle SHORTENS
Eccentric
Exert tension while muscle LENGTHENS
Open Kinetic Chain
Furthest away from body free and not fixed to ground
Closed Kinetic Chain
Furthest away segment fixed
Isokinetic
Maximum contraction at constant velocity throughout entire ROM
Isotonic Strength Tests
Pull ups
10RM
1RM
1 Rep Max Test
5-10min general and specific warm up
Rest and stretch 1min
Do 3-5 reps @69-80% of 1RM
Rest 1min
Inc weight slightly do 1 Rep
Rest 3min
Inc weight slightly do 1 rep
Repeat till Px fails to lift weight
1RM equation
1RM ÷ BW(kg) =relative strength value
Isokinetic Strength Tests
Cybex
KinCom
Biodex
Isometric Muscle Strength tests
MMT
Handgrip test
Leg/back strength
Planking
Wall sit
Flexed arm hang
MMT
×use Lafayette MmT/bp cuff
0=no contraction
1=trace contraction, no joint movement
2=contraction, joint movement with gravity
3=joint movement against gravity
4+-=contraction against gravity+moderate ext resistance
5=contraction against gravity+strong external resistance
Handgrip Test
-use Jamar/Takei handgrip dynamometer
1. Stand upright
2. squeeze handgrip quickly and tightly as possible then release pressure
3. 3 trials, 1 min rest select best and add R+L=score
÷Bw=relative strength value
Leg strength
- Knee flexed at 30-40*
- Pronated grip with bar across thighs
- Extend knees then pull bar straight up
Back Strength
- Fully extended knees with head and back erect
- Over under hrip with bar across thighs
- Roll shoulders back
- Oukl up into extension
Sahrman Core stability test
T level core stability test
Evaates abdominal muscle function
Muscle Balance ratio
-strength imbalance=compromise joint stability and inc risk of musculoskeletal injury
-agonist:antagonist
-affected by force-velocity of Muscle groups
-compare 1Rm for muscle groups
Muscle balance ration
Hip/elbow/trunk ext:flex 1:1
Ankle invertors:evertors 1:1
Shoulder Ext/IntR:Flex/ExtR 3:2
Knee ext:flex 3:2
Ankle plantar:dorsiflex. 3:1
Functional fitness testing
Children:1RM
Elderly:arm curl test, 30sec chair stand test
