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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Journal ArticleDOI
Validity and reliability of Optojump photoelectric cells for estimating vertical jump height.
Julia F. Glatthorn,Sylvain Gouge,Silvio Nussbaumer,Simone Stauffacher,Franco M. Impellizzeri,Nicola A. Maffiuletti +5 more
TL;DR: The Optojump photocell system demonstrated strong concurrent validity and excellent test-retest reliability for the estimation of vertical jump height and is legitimate for field-based assessments of verticaljump height.
Journal ArticleDOI
Testing soccer players
M Svensson,Barry Drust +1 more
TL;DR: Fitness tests in conjunction with physiological data should be used for monitoring changes in players' fitness and for guiding their training prescription, because of the complex nature of performance in competition.
Journal ArticleDOI
Physiological demands of top-class soccer refereeing in relation to physical capacity: effect of intense intermittent exercise training
Peter Krustrup,Jens Bangsbo +1 more
TL;DR: Top-class soccer referees have significant aerobic energy expenditure throughout a game and episodes of considerable anaerobic energy turnover; the ability to perform high-intensity running is reduced towards the end of matches; the Yo-Yo intermittent recovery test can be used to evaluate referees' match performance; and intense intermittent exercise training improves referees' performance capacity during a game.
Journal ArticleDOI
Predicting Activity Energy Expenditure Using the Actical® Activity Monitor
TL;DR: Algorithms for predicting activity energy expenditure (AEE) in children and adults from the Actical® activity monitor accurately predicted accumulated AEE and time within light, moderate, and vigorous intensity categories (p > .05).
Journal ArticleDOI
The Case for Using the Repeatability Coefficient When Calculating Test–Retest Reliability
Sharmila Vaz,Torbjörn Falkmer,Torbjörn Falkmer,Torbjörn Falkmer,Anne Passmore,Richard Parsons,Pantelis Andreou +6 more
TL;DR: A case is made for clinicians to consider measurement error (ME) indices Coefficient of Repeatability (CR) or the Smallest Real Difference (SRD) over relative reliability coefficients like the Pearson’s (r) and the Intraclass Correlation Coefficient (ICC) while selecting tools to measure change and inferring change as true.
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.