Decreased Anticipatory Postural Adjustments During Gait Initiation Acutely Postconcussion.

The measurements were made with laboratory force plates, not with ordinary clinic tools, so the test cannot be used in a clinic as described. The study did not include motion capture or muscle activity recordings, so it cannot say which muscles caused the reduced preparatory shift. It was underpowered for comparisons by concussion history, gender, or initial symptoms such as loss of consciousness. The groups differed at baseline in step length and speed, which were adjusted for but may still affect interpretation. The force-plate data did not show where the body-weight shift was relative to the foot. The study did not compare gait initiation with clinical balance tests, symptom scores, or return-to-activity decisions.

The supplied text does not include a conflicts-of-interest declaration. The publication types list NIH extramural research support.

Do not conclude that concussion causes Parkinson’s disease or that these force-plate measures are ready for clinic. The authors state the Parkinson’s comparison only reflects a conservative postural strategy, and the methods require laboratory force plates.