Concurrent validity of two-dimensional video analysis of lower-extremity frontal plane of movement during multidirectional single-leg landing

Alahmari, A, Herrington, LC ORCID: https://orcid.org/0000-0003-4732-1955 and Jones, R ORCID: https://orcid.org/0000-0001-5242-185X 2019, 'Concurrent validity of two-dimensional video analysis of lower-extremity frontal plane of movement during multidirectional single-leg landing' , Physical Therapy in Sport, 42 , pp. 40-45.

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Abstract

Objectives: Establish the concurrent validity between 2D video analysis and 3D motion analysis of frontal plane lower limb movements during multidirectional landing tasks.
Design: Correlation study
Setting: University Biomechanics laboratory
Participants: 34 (19 male, 15 female) uninjured physical active individuals
Main outcome measures: knee abduction and hip adduction angles during a variety of single leg landing tasks.
Results: 2D knee abduction showed an association with 3D knee abduction angle ranging from r = 0.17-0.42 across the tasks, with r² values ranging between 0.03-0.17. 2D hip adduction angle in both legs reported a strong and significant correlation with 3D hip adduction angle, ranging from r = 0.70-0.90 across all tasks. Linear regression analysis (r²) revealed that 49–81% of 3D hip adduction angle can be explained by 2D measurement.
Conclusion: It might be difficult to explain 3D knee abduction angle using 2D video analysis during single leg landing tasks, whereas 2D hip adduction angle is a strong predictor or 3D hip adduction angle. It would appear 2D video analysis has strong concurrent validity when assessing hip adduction angle, but it is weak when assessing knee abduction angle during a variety of single leg landing tasks.

Item Type: Article
Schools: Schools > School of Health and Society > Centre for Health Sciences Research
Journal or Publication Title: Physical Therapy in Sport
Publisher: Elsevier
ISSN: 1466-853X
Related URLs:
Depositing User: LC Herrington
Date Deposited: 21 Jan 2020 08:28
Last Modified: 21 Jan 2020 08:30
URI: http://usir.salford.ac.uk/id/eprint/56261

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