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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

Measures of reliability in sports medicine and science.

TL;DR: A wider understanding of reliability and adoption of the typical error as the standard measure of reliability would improve the assessment of tests and equipment in the authors' disciplines.
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Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM.

TL;DR: In this review, the basics of classic reliability theory are addressed in the context of choosing and interpreting an ICC and how the SEM and its variants can be used to construct confidence intervals for individual scores and to determine the minimal difference needed to be exhibited for one to be confident that a true change in performance of an individual has occurred.
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Match performance of high-standard soccer players with special reference to development of fatigue

TL;DR: Top-class soccer players performed more high-intensity running during a game and were better at the Yo-Yo test than moderate professional players; fatigue occurred towards the end of matches as well as temporarily during the game, independently of competitive standard and of team position; defenders covered a shorter distance in high- intensity running than players in other playing positions.
Journal ArticleDOI

The International Physical Activity Questionnaire (IPAQ): a study of concurrent and construct validity.

TL;DR: The long, self-administered IPAQ questionnaire has acceptable validity when assessing levels and patterns of PA in healthy adults and might introduce a source of error in criterion validation studies.
Journal ArticleDOI

An Introduction to Medical Statistics

M. Greenwood
- 01 Feb 1932 - 
TL;DR: It is scarcely an exaggeration to say that the recently issued preliminary report on the census of 1931 is one of the most sensational documents which has appeared for years, and that he who reads it intelligently will understand what is meant by saying that civilisation is in the melting pot.
References
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Journal ArticleDOI

A review of research in sports physiology

TL;DR: The potential contribution of future research in sports physiology to the development of the elite competitor and the adaptation of these physiological systems to further training are considered, possibly leading to overtraining.
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Reproducibility of ballistic movement.

TL;DR: The reproducibility of ballistic actions performed on a custom-made apparatus was assessed in six untrained men and, with the exception of rate of torque development, the reproduced ballistic measures is acceptable for longitudinal training studies and cross-sectional group comparisons.
Journal ArticleDOI

Statistical Concepts in the Interpretation of Serial Bone Densitometry

TL;DR: The precision of a measurement can be expressed as the variance of multiple measurements, and if separate measurement precisions are known or are indeed constant, one can assess the level of statistical agreement of longitudinal data to linear, or other theoretical, models.
Journal ArticleDOI

Analytical goals developed from the inherent error of medical tests.

J W Ross, +1 more
- 01 Jul 1993 - 
TL;DR: This model uses inherent test error due to biological variability as the touchstone by which to validate the clinical acceptability of analytical goals and quantifies in medical utility terms the results of such modifications.
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