There Ex -ch4

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What is flexibilty

ability to move a joint or series easily through an unrestricted pain-free ROM
hypomobility

restricted movement
selective stretching

allow restrictions to develop for improved functioning
types of stretching
- manual
- mechanical
- self-stretch
- neuromuscular
- muscle energy
- joint mobilization
- neural mobilization
benefits of stretching
- improves flexibility and ROM
- injury prevention
- improve function
properties of soft tissue
- elasticity
- viscoelasticity
- plasticity
elasticity

return to pre-stretch length after short stretch
viscoelasticity
- resists change but deforms after sustained stretch
- non-contractile tissues only
plasticity

new and greater length after stretch is removed
effects of immobilization

reduced muscle length & # of sarcomeres in series
stess

amt of tension or load on tissues
strain

amt of deformation/ lengthening occurs during time stress is applied
elastic deformation
- recovers to original length
- breaks if stress exceeds strain
plastic deformation

new shape under slow rates of stress

breaks with quick stress
failure

rupture of tissue
static stretching

holding muscle in fully elongated position for a period of time
types of static stretches
- manual/passive
- self
advantages of static stretches
- decrease chance of injury
- ease of instruction
- pt performs ind.
IDEAL STATIC stretch time

hold 30 seconds 3 reps..3 times a week
ballistic stretch
- rapid forcefull intermittent stretch
- high speed, high intensity
advantages of ballistic stretches
- modified to sport specific
- prepares athlete for sport of high velocity,
advantages of proprioceptive neuromuscular fascilitation
- greatest improvement of extensibility
- used with rom
muscle spindle fibers
do what?
stimulate what?
types?
are stimulated by?
- sense muscle length
- stimulate contraction
- type Ia
- type II
- stimulated by excessive stretch
golgi tendon organs
do what?
stimulate what?
types?
are stimulated by?
- inhibit contraction
- stimulate relaxation
- type Ib fibers
- are stimulated by excessive contraction
describe Type Ia fibers

muscle spindle fibers that are large and rapid conductors
describe Type II fibers
- muscle spindle fibers
- small and slow conducting
Type Ib fibers
- protective response against damage
- junction of tendon and muscle
Contract-Relax
- antagonist muscle stretched
- isotonic contraction of antagonist
Hold-Relax
- antagonist muscle placed on stretch
- isometric contraction of antagonist
Autogenic Inhibition

relax of the affected muscle through contraction
reciprocal inhibition

relax of antagonist muscle through contraction of agonist
mechanical stretching

increase joint ROM using low load, long duration, in stretch
immature scar tissue
- adaptable for 8 wks
- with stress becomes organized
mature scar tissue

unadaptable after 14 wks

Author

laneaustin

243866

Card Set

There Ex -ch4

Description

terms & concepts

Updated

2013-10-30T06:36:20Z

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