Journal ArticleDOI
Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine
Greg Atkinson,Alan M. Nevill +1 more
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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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Assessing nonlinear properties of heart rate variability from short-term recordings: are these measurements reliable?
Roberto Maestri,Gian Domenico Pinna,Alberto Porta,Rita Balocchi,Roberto Sassi,Roberto Sassi,Maria G. Signorini,Maria Dudziak,Grzegorz Raczak +8 more
TL;DR: Compared to classical linear indices, nonlinear HRV parameters seem more suitable for individual test-retest evaluations but, due to a reduced ICC, they need increased sample size in comparative studies involving two groups of subjects.
Journal ArticleDOI
Shear-Wave Elastography Assessments of Quadriceps Stiffness Changes prior to, during and after Prolonged Exercise: A Longitudinal Study during an Extreme Mountain Ultra-Marathon
Pierre Andonian,Magalie Viallon,Magalie Viallon,Caroline Le Goff,Charles de Bourguignon,Charline Tourel,J. Morel,Guido Giardini,Laurent Gergelé,Grégoire P. Millet,Pierre Croisille,Pierre Croisille +11 more
TL;DR: This study is the first to assess changes in muscle stiffness during prolonged extreme physical endurance exercises based on shear modulus measurements using non-invasive SWE, and concludes that decreases in stiffness may have resulted from quadriceps overuse in the setting of supra-physiological stress caused by the extreme distance and unique elevation of the race.
Journal ArticleDOI
Balance in single-limb stance in healthy subjects – reliability of testing procedure and the effect of short-duration sub-maximal cycling
TL;DR: The absence of systematic variation and the high ICC values, indicate that the test is reliable for distinguishing among groups of subjects, however, relatively large differences in an individual's balance performance would be required to confidently state that a change is real.
Journal ArticleDOI
Validity of an upper-body-mounted accelerometer to measure peak vertical and resultant force during running and change-of-direction tasks
TL;DR: Accelerometers, within integrated micro-technology tracking devices and worn on the upper body, can provide a relative measure of peak impact force experienced during running and two change-of-direction tasks provided that resultant smoothed values are used.
Journal ArticleDOI
Reliability of Handgrip Strength Test in Basketball Players
TL;DR: The present results indicate that maximum handgrip strength can be measured reliably, using the Jamar hand dynamometer, in basketball players from childhood to adulthood.
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.