Journal ArticleDOI
Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine
Greg Atkinson,Alan M. Nevill +1 more
TLDR
It is recommended that sports clinicians and researchers should cite and interpret a number of statistical methods for assessing reliability and encourage the inclusion of the LOA method, especially the exploration of heteroscedasticity that is inherent in this analysis.Abstract:
Minimal measurement error (reliability) during the collection of interval- and ratio-type data is critically important to sports medicine research. The main components of measurement error are systematic bias (e.g. general learning or fatigue effects on the tests) and random error due to biological or mechanical variation. Both error components should be meaningfully quantified for the sports physician to relate the described error to judgements regarding ‘analytical goals’ (the requirements of the measurement tool for effective practical use) rather than the statistical significance of any reliability indicators.read more
Citations
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Preliminary study: reliability of the spinal wheel. A novel device to measure spinal postures applied to sitting and standing.
TL;DR: The spinal wheel demonstrated excellent within-day and high between-day reliability and may be used in conjunction with 2D camcorder to provide clinically useful visual evaluation of postures for assessment, intervention monitoring, and feedback during postural re-education.
Journal ArticleDOI
Scaling concept II rowing ergometer performance for differences in body mass to better reflect rowing in water
TL;DR: The contribution that m made to single‐scull rowing in addition to ergometer rowing speed (using allometric modeling) was found to be negative (P<0.001), confirming that m has a significant drag effect on water rowingspeed.
Journal ArticleDOI
The validity and reliability of a 5-hz gps device for quantifying athletes’ sprints and movement demands specific to team sports
TL;DR: In this paper, the validity and reliability of a 5Hz GPS system (WIMU) during 10m and 30m sprints and during team sports specific movements and the reliability during very high speeds (> 30 km/h was investigated.
Journal ArticleDOI
A comparison of hand-tracing and cephalometric analysis computer programs with and without advanced features—accuracy and time demands
Georgios Tsorovas,Agneta Karsten +1 more
TL;DR: Both basic and advanced features of five different cephalometric analysis software programs showed good measurement agreement with the hand-tracing technique, which minimizes the time requirements for analysis.
Journal ArticleDOI
Reference Values for 6-Minute Walk Test and Hand-Grip Strength in Healthy Hong Kong Chinese Adults
TL;DR: Although the test-retest reliabilities in terms of ICC for 6-minute walk test and HGS measurement were satisfactory to high, the associated random variations were large on repeated measurements and Physiotherapists should be aware of these random errors in the evaluation of change in 6MWT and H GS.
References
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Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement.
TL;DR: An alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability.
Book
Practical statistics for medical research
TL;DR: Practical Statistics for Medical Research is a problem-based text for medical researchers, medical students, and others in the medical arena who need to use statistics but have no specialized mathematics background.
Journal ArticleDOI
Statistical methods for assessing agreement between two methods of clinical measurement
TL;DR: In this article, an alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability, which is often used in clinical comparison of a new measurement technique with an established one.
Journal ArticleDOI
A concordance correlation coefficient to evaluate reproducibility.
TL;DR: A new reproducibility index is developed and studied that is simple to use and possesses desirable properties and the statistical properties of this estimate can be satisfactorily evaluated using an inverse hyperbolic tangent transformation.