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What is the difference between mobility and flexibility?
Mobility is active range of motion
Flexibility is passive range of motion
What is useless flexibility
The ability to get a certain angle (ROM) but not able to use the angle (ROM) in daily life
-essentially you have great flexibility but lack mobility
What can cause reduced ROM from an active tension standpoint?
Nervous system tone (hypertonicity)
-commonly see this
-its a protection mechanism
What can cause reduced ROM from a passive tension standpoint?
Immobilization
What are the 2 types of tissue tension restricting ROM
Active tension
Passive tension
What happens when we have joint hyper-mobility?
Brian senses instability
Responds by creating stability through active stabilization by increasing neuromuscular tone
-feel like they have tight muscles
What is the relationship between flexibility and injuries?
U shaped curve
The very flexible have more joint related injuries (dislocations)
The very tight have more soft tissue injures
What difference does we see between those with tight muscles versus those with flexible muscles?
Less flexible tend to have mores soft tissue injuries
More flexible tend to have more joint related injuries
Tight muscles are more prone to?
Delayed onset muscle soreness (DOMS)
-more often a neurological problem not physiological
Tight muscles are better at what?
Storing energy and releasing energy
Reduction in flexibility of about _____ per decade from what ages?
About 10% per decade from ages 20-49
What most likely causes the feeling of muscle tightness?
Fascial and neurological tension
Why do we experience tightness and stiffness?
Prolonged postures, lack of movement
Stress, diet, sleep, emotional state, etc.= sensitization
How does neuromuscular dysfunction lead to tightness and restricted ROM?
Nervous system dysfunction
Nothing physically wrong with the tissues
Apparent reduces mobility
What are the different types of treatments that are optimal for neuromuscular dysfunction?
Inhibitory techniques (PIR/IR stretching) and or muscle activation techniques
Rapid changes that are often short term changes
What specific types of treatments do physically remodeled/shortened tissues require?
Load over time with progression of forces over a long time frame
What does fascia communicate and remodel in response to?
LOAD
What major structure (s) in the body provide a significant amount of afferent feedback necessary for allowing proper movement expression?
Fascial connections
Why is performing an adjustment before active care exercises recommended?
Greatest degree of afferent and proprioceptive input that can be passively applied is through joint manipulation
Indications for stretching
Decreased motion leads to structural deformities
Muscle weakness and shortening of opposing tissue
Used as part of total fitness program designed multifactoral injury
Prior vigorous exercise to minimize soreness
Contraindications for stretching
Bony block limits motion
Recent fraction, non inion incomplete
Acute inflammatory or infections process
Soft tissue healing could be disrupted due to stretch
Sharp acute pain with joint movement or muscle elongation
(Strains and sprains)
Hematoma
Hypermobility
What does stretching actually do?
Affects change in the nervous system through facilitation or inhibition of neuromuscular tone
Fascial tension/contraciton and vicoelastity
How long do the effects of stretching endure?
5 to 30 minutes
Which important factor is most important to modify in order to counter the short term effects of stretching?
Repetition and consistency= Increase in frequency
What causes the acute increase in ROM seen with static stretching?
Analgesic response
Inhibited nervous system tone
Short term increase in flexibility of muscles
During what timeframe of stretching do the majority of increased ROM occur?
Within the first 5-30 minutes
What are optimal stretching recommendations
3-4 sets for 15-30 seconds for optimal gains
Multiple times per day
6-10 weeks
What is the ideal duration a stretch should be held?
15-30 seconds
What is the ideal frequency for stretching?
Multiple times per day for 6-10 weeks
What is the ideal number of repetitions a stretch should be performers for maximal benefit
3-4 sets for 30 seconds each
What is the primary factor for increasing tendon flexibility?
Heavy slow resistance over long periods of time
How long do you need to stretch a tendon to see length improvements
Help up to 10 minutes
What is stretch-induced strength loss?
Stretching causes an acute inhibition of maximal force produced by the muscle
How can someone mitigate the effects of stretch-induced strength loss?
Maximal contraction of the muscle prior to static stretch
What types of activities does stretching-induced strength loss primarily effect?
More pronounced in activities with relatively slow velocities
What effects does stretching have on economy of movement and perceived exertion for steady state endurance training such as running?
Reducing the perception of effort and making the training sessions more enjoyable
What is the difference between static stretching and strength training for increasing ROM
Static stretching and strength training showed no difference in the effects on ROM gains
-Load and time play a role here
What is DOMS?
Delayed onset muscles soreness
What causes DOMS?
Neural feedback
Free radicals
Swelling
What is recommended in terms of stretching for DOMS?
Should not be performed during DOMS
-avoid stretching following high-intensity sessions or strengthening session
-avoid positions that involve high intensity contractions
How does neural feedback cause DOMS
Muscle stretched during resistance training
Spindle fibers stretch and actives in order to regular level of tension
Pressure is applied to the nerve endings of the muscle spine causing pain
How do free radicals cause DOMS
Released from mitochondria
How does swelling cause DOMS
Relate back to pressure around the nerve endings
What are the different categories of stretching techniques
Static stretching
Dynamic stretching (active dynamic and ballistic stretching)
Muscle energy technique (PIR and RI)
PNF stretching (contact-relax, hold-relax, CRAC)
What is static stretching? How can it be performed individually or with a partner
"Relaxing into a ROM"
Slow and constant
Self assisted (bands, straps, etc)
Have someone else move you into position for with a partner
What is the underlying reasoning behind the push against performing ballistic stretching?
Increased injury risk
-difficult to control moment
-NOT SAFE OR INDICATED FOR INJURY RECOVERY
-constant, repetitive tension on muscle spindles
What is ballistic stretching
Rapid altering moments to end range
-bouncing at end range
Does ballistic stretching result in sustain increases in ROM
NO
How is active dynamic stretching performed
Contorted movement through a full range
Start slow and gradually pick up speed and increase ROM
Prepares and "warms up" the body for specific demand or task
What is propioceptive neuromuscular facilitation (PNF)
Concept of patient management
-all human beings have untapped existing potential
What are the PNF basics for inhibition? (I.e. the goes of PNF inhibitory techniques)
Integrated approach
Positive approach
Help the patient achieve highest level of function
Motor control and learning principles
What is integrated approach with PNF
Each session directed to total human not just specific problem or segment
What is positive approach with PNF
Focus on and reinforce tasks the patient can do
What are the 3 PNF inhibitory techniques
Irradiation
Reciprocal inner actions
Inhibition
What is the spread excitation in the CNS that causes contraction of the synergistic muscles in a specific pattern
Irradiation
-contracting from your toes up one muscle group at a time
Simple way of explaining irradiation and the final result of it
Contraction in "A" excites synergistic "B" and "C"
Result- both facilitate the movement
Which PNF stretching technique uses reciprocal inhibition? Which other technique uses the same concept of reciprocal inhibition?
PNF technique of "hold relax"
Same idea as PIR from MET
Which PNF stretching technique uses post contraction inhibits? Which other technique uses the same concept?
Contract relax anatagonist contract (CRAC) from PNF
Same idea as RI from MET
What is the main difference between hold-relax, contract-relax and CRAC?
All 3 start with the same basic steps but
Contract relax after the isometric contraction you ask the patient to concentrically contract the muscle being stretched while providing light resistance until neural
And then in CRAC they contract the opposite muscle to increase stretch further into barrier
What is muscle energy technique (MET)?
Stretching that involves voluntary contraction of a muscle in precise and controlled direction and variations in intensity
What technique uses a muscles own energy in the form of gentle isometric contractions to relax the muscles via autogenic or reciprocal inhibitor and lengthen the muscle?
Muscle energy technique (MET)
What are the benefits of MET
Super helpful for postural muscles (good for facilitating adjustments)
What technique utilizes golgi tendon organs
Autogenic inhibits (PIR) from MET
What technique utilizes muscle spindles
Reciprocal inhibition (RI) from MET
During PIR from MET stretching technique, yo are contracting which muscle during the stretch
Antagonist
How is autogenic inhibition used during stretching? Which MET technique uses autogenic inhibition
PIR stretching technique
-muscle taken to resistance point
-10-20% contraction for 5-10 seconds with applied force from doctor in opposite direction (patient inhales during this)
-after isometric contraction, patient exhales and relaxes, pushing further into stretch
-repeat 2-4 times
How id reciprocal inhibition used during stretching? Which MET technique uses this?
RI from MET
-muscle taken to resistance pint
-contract the antagonist muscle (opposite one being stretched) with 10-20% effort for 5-10 seconds
-apply force in opposite direction (patient should inhale)
-relax and exhale while applied more stretch
Repeat 2-4 times
What is Post-Facilitation Stretch (PFS)? How does it differ from other stretching techniques?
Howled muscle midway between neutral and point of tension
Contract with near maximum effort for about 10 seconds
Relax completely
Move quickly and carefully to new point of tension
Hold stretch for about 15 seconds
Move back to midrange and rest 20-30 seconds
Repeat 3-5 times
What is Active Isolated Stretching (AIS)? How does it differ from other stretching techniques discussed?
Doc applies 1 pound pressure
Patient contracts for 1-2 seconds once barrier reached
Stretch no more than 2 seconds
Return to start position
Repeat 15-20 reps, 1-2 sets