Task Determinates of a Forward Reach
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Transcript of Task Determinates of a Forward Reach
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Forward Reach:Group A
Rachel PowellJill Stephenson
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Our process
?
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What is a forward reach?“The task requires moving the body’s center of mass toward the front edge of the base of support in a well controlled manner, and thus is often regarded as an indicator of boundaries of stability.”
Liao and Lin, 2011
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When do we need observe this task?
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How do you perform the task?
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Strategies in action
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Strategies: Ankle
Liao and Lin, 2008
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Strategies: Hip
Liao and Lin, 2008
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Strategies: Mixed
Liao and Lin, 2008
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Liao and Lin, 2008
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Compensations•Knee flexion•Posterior sway•Raising up on to toes•Trunk rotation
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Limitations
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Spinal Motion
Cavanaugh, 1999
Averages:Trunk flexion: 51 degThoracolumber Rotation: 11-12 degLateral Flexion: 13 deg
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Compensations•Stepping strategy•Widening the BOS•Leaning against support•Counterbalance
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Limitation
FEAR
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Balance•Postural Sway
Sullivan, 2009
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Strength•Plantar Flexors•Trunk Extensors •Hip Extensors
Liao and Lin, 2011
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Health conditions•Cognition•Vestibular conditions•Parkinson’s •Stroke•Diabetes
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Clinical Correlate: Parkinson’s•Shorter distances compared to age
matched controls ▫On average 6 inches shorter
•Reduced mean A/P and M/L accelerations▫Due to increased muscle tone and
hypokinesia•Increased use of hip strategy
▫Due to the decreased movement in the A/P plane
Hassman, 2014
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Why does it matter?