Τετάρτη 28 Μαρτίου 2018

Trunk Motion Visual Feedback During Walking Improves Dynamic Balance in Older Adults: Assessor Blinded Randomized Controlled Trial

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Publication date: Available online 28 March 2018
Source:Gait & Posture
Author(s): Eric Anson, Lei Ma, Tippawan Meetam, Elizabeth Thompson, Rathore Roshita, Victoria Dean, John Jeka
BackgroundVirtual reality and augmented feedback have become more prevalent as training methods to improve balance. Few reports exist on the benefits of providing trunk motion visual feedback (VFB) during treadmill walking, and most of those reports only describe within session changes.Research Question: To determine whether trunk motion VFB treadmill walking would improve over-ground balance for older adults with self-reported balance problems.Methods40 adults (75.8 years (SD 6.5)) with self-reported balance difficulties or a history of falling were randomized to a control or experimental group. Everyone walked on a treadmill at a comfortable speed 3x/week for 4 weeks in 2 minute bouts separated by a seated rest. The control group was instructed to look at a stationary bulls-eye target while the experimental group also saw a moving cursor superimposed on the stationary bulls-eye that represented VFB of their walking trunk motion. The experimental group was instructed to keep the cursor in the center of the bulls-eye. Somatosensory (monofilaments and joint position testing) and vestibular function (canal specific clinical head impulses) was evaluated prior to intervention. Balance and mobility were tested before and after the intervention using Berg Balance Test, BESTest, mini-BESTest, and Six Minute Walk.ResultsThere were no significant differences between groups before the intervention. The experimental group significantly improved on the BESTest (p = 0.031) and the mini-BEST (p = 0.019). The control group did not improve significantly on any measure. Individuals with more profound sensory impairments had a larger improvement on dynamic balance subtests of the BESTest.SignificanceOlder adults with self-reported balance problems improve their dynamic balance after training using trunk motion VFB treadmill walking. Individuals with worse sensory function may benefit more from trunk motion VFB during walking than individuals with intact sensory function.



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