it’s not just what you do ----- it’s how you do it! you do - pt.pdf2. increase heart rate and...
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It’s not just what you do ----- It’s how you do it!
Marc Sherry PT, DPT, LAT, CSCS, PES
Dan Cobian, PhD, PT
Disclosures
• Movement based rehabilitation • Dynamic Warm Up • Unanticipated movements • Movement skill acquisition
– Sources of feedback – External focus of attention vs. internal focus of attention – Blocked vs random practice – Imagery and AOI
• Patient adherence and engagement through communication and technology – Measurement
• Empathic listening and trust • Technology to improve assessment
Athletic Movement
Athletic Movement
Athletic Movement
Athletic Movement
Athletic Movement
Athletic Movement
Athletic Movement • Opposition of arms and legs • Multi-joint movement
– Triple flexion – Triple extension
• Multi-planar with emphasis on rotation • Quick changes of base of support • Unsupported • Unanticipated movement • Indirect contact
Physical Therapy
• Are we trying to developing athletic/functional movement or impress our patients with “stuff”?
No sense stuff
wall squat • function: closed chain multi-joint
movement with external support • theory: improves quad strength • critical review: strengthening quad in
isolation from glutes with decrease need for postural awareness – effective deceleration is triple flexion with significant contribution from glutes
Risk Factors Associated With Noncontact ACL Injury – “Neuromuscular”
• Altered movement pattern – Studies have repeatedly
shown that women land, cut, and pivot with dec hip/knee flexion and inc knee valgus/hip internal rotation/ tibial external rotation and increase quad to hamstring activity
Besier et al Med Sci Sports Exerc. 33 2001 Cappell et al AJSM 30 2002 Colby et al AJSM 28 2000 Decker et al Clin Biomech 18 2003 Hutson et al AM J Knee Surg 14 2001
High KAM during 3-D analysis of a drop-vertical jump task was the most accurate predictor of future ACL injury in a cohort of 205 adolescent female athletes – Hewett 2005
No sense stuff
• If evidence shows primary MOI for non-contact injuries of ACL deceleration with apparent knee valgus (femoral IR and hip adduction with tibial ER), then why
Really Stupid Stuff
• Is the exercise a means to an end or the end of meaning?
• Means to an end = something done to achieve something else
Movement Preparation / Dynamic Warm Up
What is “dynamic warm up”?
• A progression of active exercises designed to prepare athletes for the demands of their PHYSICAL THERAPY sport /activity
What is “dynamic stretching”? • Active and repeated elongation of a
specific MTU What is “static stretching”? • Passive and long duration elongation of a
specific MTU
WHY?
Dynamic Warm Up vs. Static Stretching
+1.4% -4.2%
Dynamic Warm Up BEFORE Static Stretching
Significant decrease in agility time with Dynamic warm up vs. Static stretching
Static Stretching
Club head speed -4.2%
Distance -5.6%
Accuracy -31%
Consistent ball contact -16.3%
5 Goals of Dynamic Warm-Up 1. Increase core temperature 2. Increase heart rate and prime the CV system and
the energy “delivery” systems utilized for a given sport, activity or training session.
3. Elongates MTU’s actively with the goal of preparing or improving dynamic flexibility
4. Improve timing, rhythm and coordination. 5. Increases neuromuscular reflex sensitivity and
promotes “psycho-motor” readiness.
Guidelines of Dynamic Warm-Up 1. After general warm up 2. Static stretching should be after practice or if needed
before practice then before dynamic warm up. Any static stretching should be less than 30 sec.
3. Should break a light sweat 4. Include lower / upper / core 5. Use multi-joint movement patterns --- age related 6. Progressive build up of speed
Fundamental Movement Strength Progression
Impact Progression
Agility Drills and Progression
Unanticipated Movement
• video
Movement Development
“Skill acquisition occurs when the skill is repeated correctly, frequently, in its entirety, and reflects the conditions under which the acquired skill will be ultimately performed or used”
-Gerald Lafon
Performance – Skill execution at a particular moment in time (not permanent) – Highly variable & sensitive to conditions that have no bearing on the assessment of skill (eg; fatigue, environmental conditions, instructions) Motor Learning – A permanent improvement in skill that is achieved as a function of practice – Suggests underlying mechanisms have been developed Motor learning is the basis for performance
Farrow, D.
Sources of Feedback Intrinsic • Information provided as a natural
consequence of making an action Extrinsic • Information external to the performer & adds
to or enhances intrinsic information – directed at helping them “feel it” (can be verbal or task oriented)
• Is either Knowledge of the Result or Performance
• Can be verbal or non-verbal
Feedback Modalities
KINESTHETIC • Allow the athlete to immediately practice the skill with minimal or no instruction • Provide verbal feedback describing the ‘feel’ of the movement
Farrow, D.
Manual Feedback • Aim to reduce errors & ensure correct
movement • Useful for low skilled performers • Powerful & effective when applied in
practice, but is not a strong learning variable because:
– Modifies feel of task – Decision making changes – Limited opportunity to experience errors or
correct errors – Specificity / Transfer
Visual Feedback • Allow observation of the skill by video, demo, or
watching others during ‘live’ action • Provide verbal descriptions utilizing visual terms • Calvo-Merino et al, 2005 (dancers) showed there is a
network of motor areas involved in preparation and execution of action that was also activated by observation
– Ballet vs. Capoeira – Activation was stronger in “experienced” dancers --- implication for rehab
Visual Feedback • AOT – Bellelli et al 2010
– Traditional PT + motor movies vs geographic movies – Post-surgical orthopedic pts – Significant improvement in both mobility and
locomotion in the motor movie group • http://www.youtube.com/watch?v=gPErSBmU-Gk
Verbal Feedback
• Effects Focus of Attention and Processing
Focus of Attention
• EFOA (Implicit learning) – Direct attention toward external effects of action or the
goal • IFOA (Explicit learning)
– Direct attention toward the body’s components during a task
Farrow, D.
ACL injury prevention, more effective with a different way of motor learning? -Benjaminse and Otten, 2011
• Direct instructions can have a detrimental effect on learning, thus disrupting the execution of automatic skills
• Less resilient under psychological and physiological fatigue
Prapavessis et al 2003
- Poor retention on skills learned through technical instruction >1 week
• Focus on the rungs of the Vertec that were to be touched (external focus)
• Focus on the finger with which the rungs were to be touched (internal focus)
• Focus on jumping as high as possible (control condition)
– Zachry et al, J Sport Exerc Psychol. 2005; 27:S162–3.
EFA vs IFA
• 36 grade 1 or 2 ankle sprains • Postural control
– EFA = board – IFA = body
• Biodex Stability Test Variables: • Overall stability • AP variance • ML variance
» Rotem-Lehrer JOSPT 2007
EFA + x 3
Lohse 2011
Plantarflexion isometric target • EFA = push platform
– TA 6% MVC – Less error – Higher median power frequency = increase
MU recruitment • IFA = contract calf muscles
– TA 20.7% MVC
Athletic Performance
• Putting • Golf – 9 iron pitch • Free Throws • Dart Throwing • Swim speed • Skiing • Soccer kicking accuracy • Tennis Strokes
• EFA > control – ?? Novel tasks are adopted by people as IFA
» Merchant 2006 » Wulf 2007
• “Choking” has been shown to be related to a shift to IFA
» Baumeister 1984 » Wan and Huon 2005
• PTs utilize “internal focus” 96% of the time – UE rehab – Durham et al, Physiother Res Int. 2009;14(2):77–90
• Ave of one verbal instruction or feedback statement every 14 seconds. 66%= internally focused, 22% = externally focused, 11% = mixed
– Gait retraining post-stroke
Don’t let your knees
kiss.
Keep your
knees over your toes.
Don’t leg your
knees touch.
Keep your toes forward
and push your
knees out.
External Focus of Attention
• video
Verbal Feedback - Processing • Use questioning
– Encourages problem solving, discovery and performance awareness
– "questioning“ leads to superior long-term athlete development and greater athletic self-competence (Chambers & Vickers, 2006)
– cognitive stimulation leads to improved self-awareness ultimately increasing autonomy and learning
• Delay feedback – allow time for reflection • Withhold instruction early in acquisition to
encourage variability
Motor Learning and Performance
• Delayed and reduced feedback translates to greater improvement in long term performance
– Constant feedback can create dependency – Less feedback mobilizes cognitive processes for
performance information (driving directions example) – “Bandwidth” feedback = outside certain limits – May incorporate self directed use of extrinsic feedback
» Chambers 2006
Chambers 2006
Goodwin and Meeuwsen 1995
• BW0(feeback every trial) • BW10 • Shrinking BW
(increasing feedback) • Expanding BW
(decreasing feedback)
Movement/Skill Acquisition
• Blocked practice vs. random practice
Random practice of a motor skill enhances long term learning more then blocked
Overdorf et al Perceptual and Motor Skills 99 2004
Creating random practice can occur by changing activities or by changing environments/
conditions
Farrow, D.
Imagery • Mental practice improves performance
compared to no practice • Mental practice =/= imagery
– mental practice = imagery, self-talk, relaxation, anxiety management, mental preparation
– imagery = picturing or seeing yourself perform a skill • Studies have correlated level of athlete with use
of imagery • Self-confidence is positively effected by imagery
Weinberg 2009
Skill Acquisition for Rehab and Athletic Movement
• Use more random rehab planning • Use less verbal feedback • Use more EFA and imagery • Have athletes observe ---- others,
practice, videos, etc • Try to create motor learning • Train a spectrum of movements
and conditions (replicate sport) • Integrate task and progress to
sports specific task • Train athletes to be adaptable not
just adapted (transfer ability)
PT Reimbursement
Patient Adherence – The Problem
Patient Adherence – The Solutions
• Empathetic listening • Support
Empathy
The ability to understand or share one’s feelings
“What’s the matter with you?”
vs.
“What matters to you?”
References Farrow, D. Current Directions in Skill Acquisition www.ausport.gov.au SCOTT G. MCLEAN1 and JULIA SAMOREZOV2. Fatigue-Induced ACL Injury Risk Stems from
a Degradation in Central Control. Med Sci Sport Exer 1661-1672, 2009 Weinberg. Does Imagery Work? Journal of Imagery Research in Sport and Physical Activity,
Vol. 3 [2008], Iss. 1, Art. 1 Chambers et al. Effects of Bandwidth Feedback and Questioning on the Performance of
Competitive Swimmers. Sports Pscy, 2006, 20:184-197 Wulf G, Shea C, Lewthwaite R. Motor skill learning and performance: a review of influential
factors. Med Educ. 2010; 44(1):75–84.