Document Detail

Reliability and accuracy of a video analysis protocol to assess core ability.
MedLine Citation:
PMID:  21402366     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To develop and test a method to measure core ability in healthy athletes with 2-dimensional video analysis software (SiliconCOACH). Specific objectives were to: (1) develop a standardized exercise battery with progressions of increasing difficulty to evaluate areas of core ability in elite athletes; (2) develop an objective and quantitative grading rubric with the use of video analysis software; (3) assess the test-retest reliability of the exercise battery; (4) assess the interrater and intrarater reliability of the video analysis system; and (5) assess the accuracy of the assessment.
DESIGN: Test-retest repeatability and accuracy.
SETTING: Testing was conducted in the Stanford Human Performance Laboratory, Stanford University, Stanford, CA.
PARTICIPANTS: Nine female gymnasts currently training with the Stanford Varsity Women's Gymnastics Team participated in testing.
METHODS: Participants completed a test battery composed of planks, side planks, and leg bridges of increasing difficulty. Subjects completed two 20-minute testing sessions within a 4- to 10-day period. Two-dimensional sagittal-plane video was captured simultaneously with 3-dimensional motion capture.
MAIN OUTCOME MEASUREMENTS: The main outcome measures were pelvic displacement and time that elapsed until failure occurred, as measured with SiliconCOACH video analysis software. Test-retest and interrater and intrarater reliability of the video analysis measures was assessed. Accuracy as compared with 3-dimensional motion capture also was assessed.
RESULTS: Levels reached during the side planks and leg bridges had an excellent test-retest correlation (r(2) = 0.84, r(2) = 0.95). Pelvis displacements measured by examiner 1 and examiner 2 had an excellent correlation (r(2) = 0.86, intraclass correlation coefficient = 0.92). Pelvis displacements measured by examiner 1 during independent grading sessions had an excellent correlation (r(2) = 0.92). Pelvis displacements from the plank and from a set of combined plank and side plank exercises both had an excellent correlation with 3-dimensional motion capture measures (r(2) = 0.92, r(2) = 0.90).
CONCLUSIONS: Core ability test battery with SiliconCOACH grading method is an accurate and reliable way to assess core ability exercise performance.
Dawn A McDonald; James Q Delgadillo; Michael Fredericson; Jennifer McConnell; Melissa Hodgins; Thor F Besier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  PM & R : the journal of injury, function, and rehabilitation     Volume:  3     ISSN:  1934-1482     ISO Abbreviation:  PM R     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-03-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101491319     Medline TA:  PM R     Country:  United States    
Other Details:
Languages:  eng     Pagination:  204-11     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.
Stanford Human Performance Laboratory, Stanford University, Stanford, CA(⁎).
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