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Tackling reliability and construct validity: the systematic development of a qualitative protocol for skill and
Trevor Nicholas Savage1, Andrew Stuart McIntosh2
1a Centre for Musculoskeletal Research , School of Allied Health Sciences, Griffith University , Nathan , Australia.
Journal of Sports Sciences
|April 22, 2016
Summary
Developing a reliable skill analysis protocol is crucial for understanding sports injury causes. This study refined a qualitative method for analyzing complex movements like Rugby tackles, enhancing objectivity and reliability in sports science research.
Area of Science:
- Sports Science
- Biomechanics
- Injury Prevention
Background:
- Understanding sports injury causes is vital for improving skill effectiveness and safety.
- Quantitative analysis of complex sports skills faces ethical, technological, and validity challenges.
- Qualitative methods for human movement analysis are increasingly used but raise concerns about reliability and bias.
Purpose of the Study:
- To outline a systematic approach for developing an objective, valid, and reliable skill analysis protocol.
- To address concerns regarding the reliability and measurement bias of qualitative methods in human movement research.
- To improve the investigation of complex sports skills, using the Rugby union tackle as a case study.
Main Methods:
- Selected analysis characteristics using qualitative analysis, biomechanical models, and literature review.
- Utilized an expert panel for feedback on the developed skill analysis protocol.
- Assessed inter-rater reliability with ten trained raters, revised the protocol based on feedback, and re-assessed reliability.
Main Results:
- Initial inter-rater reliability assessment led to protocol revision by an expert panel.
- A second inter-rater reliability study showed improved mean agreement (52-90%) and intraclass correlation coefficients (ICC) between 0.6 and 0.9.
- The revised protocol demonstrated reliability comparable to other qualitative human movement analysis studies.
Conclusions:
- A systematic approach can enhance the objectivity, validity, and reliability of qualitative skill analysis protocols.
- The developed protocol provides a reliable method for analyzing complex movements like the Rugby tackle.
- This research contributes to more robust qualitative analysis in sports science, aiding in injury prevention and skill improvement.
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