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J Athl Train. 2013 Sep-Oct;48(5):685-95. doi: 10.4085/1062-6050-48.3.02. Epub 2013 Mar 19.

Different modes of feedback and peak vertical ground reaction force during jump landing: a systematic review.

Author information

1
Musculoskeletal Health and Movement Science Laboratory, University of Toledo, OH. Dr Pfile is now at College of Charleston, SC.

Abstract

CONTEXT:

Excessive ground reaction force when landing from a jump may result in lower extremity injuries. It is important to better understand how feedback can influence ground reaction force (GRF) and potentially reduce injury risk.

OBJECTIVE:

To determine the effect of expert-provided (EP), self-analysis (SA), and combination EP and SA (combo) feedback on reducing peak vertical GRF during a jump-landing task.

DATA SOURCES:

We searched the Web of Science database on July 1, 2011; using the search terms ground reaction force, landing biomechanics, and feedback elicited 731 initial hits.

STUDY SELECTION:

Of the 731 initial hits, our final analysis included 7 studies that incorporated 32 separate data comparisons.

DATA EXTRACTION:

Standardized effect sizes and 95% confidence intervals (CIs) were calculated between pretest and posttest scores for each feedback condition.

DATA SYNTHESIS:

We found a homogeneous beneficial effect for combo feedback, indicating a reduction in GRF with no CIs crossing zero. We also found a homogeneous beneficial effect for EP feedback, but the CIs from 4 of the 10 data comparisons crossed zero. The SA feedback showed strong, definitive effects when the intervention included a videotape SA, with no CIs crossing zero.

CONCLUSIONS:

Of the 7 studies reviewed, combo feedback seemed to produce the greatest decrease in peak vertical GRF during a jump-landing task.

PMID:
24067153
PMCID:
PMC3784371
DOI:
10.4085/1062-6050-48.3.02
[Indexed for MEDLINE]
Free PMC Article

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