PTRCTJournal of neuroengineering and rehabilitation2017

Effects of unilateral real-time biofeedback on propulsive forces during gait.

Christopher Schenck, Trisha M Kesar

PMID 28583196

WHAT IT FOUND

Seven able-bodied walkers on a treadmill increased push-off force in the leg receiving real-time feedback, and could reproduce it after breaks.

The other leg did not change, so feedback may target one side.

Key findings

01Peak forward force in the targeted right leg was greater than pre-training during training, immediately after training, and when participants replicated the training gait pattern.

02Peak forward force in the non-targeted left leg did not show a significant change over the session.

03When participants were asked to walk normally after training, the targeted-leg force was not different from pre-training.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

The study included only seven young able-bodied adults, so it cannot show what happens in people with stroke or other gait impairments. It used one short training session and tested only immediate effects, so it did not show whether the change persists over days or weeks. There was no control group or random allocation, so the study cannot compare the biofeedback with another training method. The main outcome was treadmill push-off force, not walking speed, balance, function, or everyday mobility. The paper did not collect kinematic data, so it cannot explain which ankle, knee, or hip movements produced the force change. Two participants reported slight joint discomfort in the right hip or knee immediately after training, although no long-lasting discomfort was reported.

Declared interests

The only funding or conflict information supplied is that the funder was the National Institute of Child Health and Human Development.

The easy way to misread this

Do not conclude that this biofeedback improves walking or is ready for stroke rehabilitation. The study tested seven able-bodied people in one short treadmill session, measured force output rather than function, and did not include a control group or stroke participants.

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