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.
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.
Authors: Henry H Hunter; Ukadike C Ugbolue; Graeme G Sorbie; Wing-Kai Lam; Fergal M Grace; Antonio Dello Iacono; Minjun Liang; Frédéric Dutheil; Yaodong Gu; Julien S Baker Journal: Sci Rep Date: 2022-08-17 Impact factor: 4.996