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Journal ArticleDOI

Statistical Methods For Assessing Measurement Error (Reliability) in Variables Relevant to Sports Medicine

Greg Atkinson, +1 more
- 01 Oct 1998 - 
- Vol. 26, Iss: 4, pp 217-238
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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.

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Citations
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Journal ArticleDOI

Reproducibility of fatmax and fat oxidation rates during exercise in recreationally trained males

TL;DR: In this paper, the intra-individual variability of: a) Fatmax measurements determined using three different data analysis approaches and b) fat and carbohydrate oxidation rates at rest and at each stage of an individualized graded test was assessed.
Journal ArticleDOI

Player Monitoring in Indoor Team Sports: Concurrent Validity of Inertial Measurement Units to Quantify Average and Peak Acceleration Values.

TL;DR: It is demonstrated that IMU-based wearable tracking devices can successfully be applied for athlete monitoring in indoor team sports and provide potential to accurately quantify accelerations and decelerations in all three orthogonal axes with acceptable validity.
Journal ArticleDOI

Cognitive-Motor Interference during Walking in Older Adults with Probable Mild Cognitive Impairment.

TL;DR: The Trail-Walking Test (TWT) is a reliable DT mobility measure in people with pMCI, however, the condition with high cognitive load is more sensitive than thecondition with low cognitive load in identifying p MCI.
Journal ArticleDOI

Tongue-based biofeedback for balance in stroke: results of an 8-week pilot study.

TL;DR: Electrotactile biofeedback seems to be a promising integrative method to balance training in patients with chronic stroke and statistically and clinically significant improvements from baseline to posttest in results.
Journal ArticleDOI

Changes in DXA-derived lean mass and MRI-derived cross-sectional area of the thigh are modestly associated.

TL;DR: DXA measures of change in lean mass were modestly associated with MRI measures ofchange in MV, and the inability to accurately detect changes over time calls into question its use in clinical trials.
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

Practical Statistics for Medical Research.

S. D. Walter, +1 more
- 01 Jun 1992 - 
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.
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