Task Determinates of a Forward Reach
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Forward Reach: Group A Rachel Powell Jill Stephenson
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Transcript of Task Determinates of a Forward Reach
Forward Reach:Group A
Rachel PowellJill Stephenson
Our process
?
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
When do we need observe this task?
How do you perform the task?
Strategies in action
Strategies: Ankle
Liao and Lin, 2008
Strategies: Hip
Liao and Lin, 2008
Strategies: Mixed
Liao and Lin, 2008
Liao and Lin, 2008
Compensations•Knee flexion•Posterior sway•Raising up on to toes•Trunk rotation
Limitations
Spinal Motion
Cavanaugh, 1999
Averages:Trunk flexion: 51 degThoracolumber Rotation: 11-12 degLateral Flexion: 13 deg
Compensations•Stepping strategy•Widening the BOS•Leaning against support•Counterbalance
Limitation
FEAR
Balance•Postural Sway
Sullivan, 2009
Strength•Plantar Flexors•Trunk Extensors •Hip Extensors
Liao and Lin, 2011
Health conditions•Cognition•Vestibular conditions•Parkinson’s •Stroke•Diabetes
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
Why does it matter?
