Freezing or Sweating Falls When Walking with Parkinson’s Disease · 2020-06-08 · Objectives 1....
Transcript of Freezing or Sweating Falls When Walking with Parkinson’s Disease · 2020-06-08 · Objectives 1....
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Freezing or Sweating FallsWhen Walking with Parkinson’s DiseaseFay B. Horak, Ph.D, PTProfessor of NeurologyOregon Health & Science UniversityParkinson’s Foundation Center of Excellence
January16,20181pmET
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Disclosure
Dr. Horak has significant financial interest in ADPM, a company that may have a commercial interest in the results of this research and technology. This conflict has been reviewed and managed by OHSU.
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Objectives
1. Understand how the brain controls walking and balance• Balance and gait should be automatic• The basal ganglia works with the frontal cortex and brainstem
2. Discover what types of balance impairments result in freezing and falls
• Small stepping responses (multiple weight shifts)• Lack of automaticity (dual-tasks)• Inability to stop inhibition (cognitive deficit)
3. Explore what can be done to minimize freezing and falls• Biofeedback and Cueing• Exercise: Dance, Tai Chi, Agility, Cognitive
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What Is Balance?
An active brain process that controls the body center of mass over its base of support
CoM
CoM
Walkingisfallingandcatchingyourself
CoM
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Brain Control of Balance and Walking:What Goes Wrong in PD?
Control Parkinson
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MotorCortex
Brainstem PD:toomuchBGinhibitionofMotorCortexandBrainstem….
SorelymoreonFrontal(cognitive)cortex.
FrontalCortex
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What Is Freezing of Gait (FoG)?
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FoG:“abrief,episodicabsenceormarkedreductionofforwardprogressionofthefeetdespitetheintentiontowalk.Afeelingthefeetaregluedtothefloor…”
Usuallyassociatedwithrapidtremblingoftheknees(weightshifting)astrytostartwalking.
TrickscanhelpovercomeFoG.
Nutt,etal,MovementDisorders
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Turning 360 Degrees is Best Way to Freeze
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Fallswhileturningarecommonanddangerous-
Leadtofracturedhips!
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We Turn 1,000 Times a Day!
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Turning at Home Is Related to Severity PD
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Mancini,etal,2017
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Turning Variability at Home Predicts Falls
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Mancinietal,2016
Morevariableturnsmayreflectlessautomaticturns.
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Why are Balance and Walking Less Automatic in PD (especially with FoG)?
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Gilatetal.2017
Automaticcontrol Frontal(cognitive)control
Moreautomatic
withFoG
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WalkingslowswhentalkingThinkingslowswhenwalking
BalanceandWalkingNeedAttentionMoreAttentioninPD,esp.withFoG!
Walk Talk
CognitiveReserve
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More Difficult the Balance Task, the More Attention is Needed
Butpracticecanmakewalkingandturningmoreandmoreautomatic
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Balance Stepping Response is Impaired by Dual Tasking
NoCognitiveTask WithCognitiveTask
Jacobs,etal,JPDandRelatedDisorders,20(7),2014
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Stepping to Recover Balance Requires Weight Shifts
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FreezingisAssociatedwithMultiplePosturalWeightShifts:AsifCan’tInhibitBalancetoStartWalking
Jacobsetal,Exp Neurology 2009
Steponset
Steponset
Control Subject PD Subject
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Freezing of postural stepping
Jacobs, ExpNeurology 2009
Freezer Using Multiple Weight Shifts with Small Steps for Stepping Response.
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FoG is Associated with Too Much Frontal Cortex Control of Brainstem
FUFUNCTION
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Brainfunctio
nalcon
nectivity
FoG
noFoGNormal
FoGinvolvestoomuchcognitivecontrolofbalance/gaitsolessautomatic.
Fling,etal,2015
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ScoreonFreezingofGaitQuestionnaire(FoG-Q)
Stroop
Score(s)
6 8 10 12 14 16 18
0
50
100
150
200
250 Rho=.84
Cohenetal,2014ParkandRelatedDisorders
FreezersHaveDifficultyReleasingInhibitionSoCan“Go”
StroopInhibitionTest
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Flingetal. Brain2013
R²=0.85487
-10
-8
-6
-4
-2
0-0.2 0 0.2 0.4
DualTa
skSL-N
ormalSL
(cm)
PPNLateralityIndex(%)
Stroop Cognitive Task and Dual Task Cost on Gait are Both Related to Brain Inhibition Pathway from Frontal Cortex to Brainstem.
Petersonetal. 2017
BrainInhibitionPathway
BrainInhibitionPathway
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• It is difficult for the brain to control balance and thinking at the same time
• Poor balance requires more attention
• Attention can be reduced by aging and PD
• As skilled tasks become more AUTOMATIC, they require less attention
Why Is it Hard to Walk and Chew Gum?
Attention is required for balance!
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Freezers Require More Attention for Balance and Walking
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DualTaskCostislargerinFreezersthanNonfreezersforbalanceandwalking.
Bienvenida GaitandPosture,2017
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Can PD Balance be Improved? YES!
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Improvedbackwardsteppingdoesn’ttransfertolateralsteps
Buttakeyourlevodopaforlearning!
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Improved Balance Responses with Practice: Especially When ON Levodopa
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Biofeedback to Reduce Freezing of Gait
ManciniandHorak,2015
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Tactile Biofeedback DuringStance Phase Reduces FoG
Mancini,etal,MDS,2016
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BaselineFreezingduringTurns
LessFreezingwithVibrotactile Biofeedback
Mancini,etal,WPC,2016
Vibrotactile BiofeedbackCanReduceFoG
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Frontal Brain Activity Increases Before FoGBiofeedback Can Reduce this Hyperactivity
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• The only intervention that significantly reduces risk of falling! (Gillespie et al, Cochrane Review, 2009)
• People receiving Balance Exerciseswere 20% less likely to fall.
Exercise
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Exercises to Improve Balance
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Dual Task Walking in People with PD Can Improve with Training!
30
30days4weeks
Killane,2015
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TangoCanImproveBalanceinPD
Earhart,G,etal
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Boxing Can Improve Balance
Before practice After 4 weeks practice
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Agility Boot Camp
A-C-E…
walking PWRmoves© agilitycourse boxing taichi
prioritization setshiftingdualtasking
Go!…NoGo!
inhibition
lunges
L– L– L– L- R
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FoG When Challenging and Stressful
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FoG Improves with Practice
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Exercise Can Improve Dual Task Cost
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Exercise Can Improve Brain Connectivity
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Good Exercises for PD
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n Makeyousweat(>80%HR)!n Atleast3x/weekn Atleast30minutesn Getharderasyougetbetter!
n Joinotherstostickwithit!n Varietyisthespiceoflife!
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Main Summary Points
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• Balance and gait should be automatic.
• PD and FoG results in less automatic control of balance/gait.
• Freezing and falls in PD:Ø Small stepping responses
Ø Lack of automaticity (dual-tasks)
Ø Inability to stop inhibition (cognitive deficit)
• Exercise can reduce falls
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•TheNIH-NationalInstituteonAging•TheKineticsFoundation•TheNIH-NationalInstituteofNeurologicDisordersandStroke• NIH- NationalCenterofMedicalRehabResearch•OregonHealthandScienceUniversity•DepartmentofVeteransAffairs
OHSUBalanceDisordersLaboratory
Sponsors:
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Upcoming Educational Programs
ATTP is a three-day course designed to increase knowledge of PD and build capacity for comprehensive inter-professional carein the treatment of Parkinson’s disease. Vancouver, BC Canada from April 4-6, 2018Parkinson.org/attp
Allied Team Training for Parkinson’s Disease™ (ATTP)
Nurse Faculty ProgramApply to the Edmond J. Safra Visiting Nurse Faculty Program to help us prepare the next generation of nurses to care for the growing population of people with PD. Parkinson.org/edmondjsafranursing
Physical Therapy Faculty ProgramLearn from internationally recognized PT experts in an intimate classroom setting and help change the future of physical therapy care in Parkinson’s. Parkinson.org/ptfaculty
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Educational Resources
Information about Parkinson’s symptoms, medications, resources and more.Parkinson.org/books
Available at 1-800-4PD-INFO or [email protected] through Friday 9:00 AM – 5:00 PM ET.
Order Materials
National Helpline
Includes tools and information for people with PD to share with hospital staff during a planned or emergency hospital stay. Parkinson.org/awareincare
Podcast: Substantial Matters New episodes every other Tuesday featuring Parkinson’s experts highlighting treatments, techniques and research.Parkinson.org/podcast
Aware in Care Kit