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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Use of acetylene breathing to determine cardiac output in young and older adults
Christopher Bell,Kevin D. Monahan,Anthony J. Donato,Brian E. Hunt,Douglas R. Seals,Kenneth C. Beck +5 more
TL;DR: It is demonstrated that open-circuit acetylene breathing provides reproducible measurements of Q(c) during exercise that demonstrate good agreement with values obtained from the acetylene rebreathing procedure in young and older healthy men.
Journal ArticleDOI
Reliability of Isometric Lower-Extremity Muscle Strength Measurements in Children With Cerebral Palsy: Implications for Measurement Design
Lydia Willemse,Merel Brehm,Vanessa A. Scholtes,Laura Jansen,Hester Woudenberg-Vos,Annet J. Dallmeijer +5 more
TL;DR: Handheld dynamometry is reliable and can be used to detect changes in isometric muscle strength in children with CP when using the mean of at least 2 trials, and to improve reliability, taking the average of 2 occasions on separate days is recommended, depending on group size and muscle group.
Journal ArticleDOI
Motor capacities of upper limbs in tetraplegics: a new scale for the assessment of the results of functional surgery on upper limbs.
TL;DR: The validity and the reliability of a Motor Capacities Scale specifically designed for tetraplegics who undergo a functional surgery of upper limbs displays a good apparent and content validity, and excellent reproducibility and construct validity.
Journal ArticleDOI
Reproducibility of Maximal and Submaximal Exercise Testing in “Normal Ambulatory” and “Community Ambulatory” Children and Adolescents With Spina Bifida: Which Is Best for the Evaluation and Application of Exercise Training?
Janke F. de Groot,Tim Takken,Rob H. J. M. Gooskens,Marja A.G.C. Schoenmakers,Manon Wubbels,Luc Vanhees,Paul J. M. Helders +6 more
TL;DR: Both maximal and submaximal measures of exercise testing can be used for discriminative purposes in ambulatory children and adolescents with spina bifida, and HR measures are superior to V̇o2 measures, while taking into account the individual variation of 5% to 8%.
Journal ArticleDOI
Reliability of squat and countermovement jump tests in children 6 to 8 years of age.
Rafael Martín Acero,Miguel Fernández del Olmo,José Andrés Sánchez,Xosé Luis Otero,Xavier Aguado,Ferran A. Rodríguez +5 more
TL;DR: The results show that the CMJ test has a high intratrial reproducibility in T1 and T2 measured through intraclass correlation coefficient (ICC ≥ 0.95), and the variability for both tests among children under 9 years of age is higher than those reported for adult subjects in other studies.
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.