Background: Biofeedback seems to be a promising tool to improve gait outcomes for both healthy individuals and patient groups. However, due to differences in study designs and outcome measurements, it remains uncertain how different forms of feedback affect gait outcomes. Therefore, the aim of this study is to review primary biomechanical literature which has used biofeedback to alter gait-related outcomes in human participants.
Methods: Medline, Cinahl, Cochrane, SPORTDiscus and Pubmed were searched from inception to December 2017 using various keywords and the following MeSHterms: biofeedback, feedback, gait, walking and running. From the included studies, sixteen different study characteristics were extracted.
Findings: In this mapping review 173 studies were included. The most common feedback mode used was visual feedback (42%, n = 73) and the majority fed-back kinematic parameters (36%, n = 62). The design of the studies was poor: only 8% (n = 13) of the studies had both a control group and a retention test; 69% (n = 120) of the studies had neither. A retention test after 6 months was performed in 3% (n = 5) of the studies, feedback was faded in 9% (n = 15) and feedback was given in the field rather than the laboratory in 4% (n = 8) of the studies.
Interpretation: Further work on biofeedback and gait should focus on the direct comparison between different modes of feedback or feedback parameters, along with better designed and field based studies.
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