Developing a new curvilinear allometric model to improve the fit and validity of the 20-m shuttle run test as a predictor of cardiorespiratory fitness in adults and youth
dc.contributor.author | Nevill, Alan | |
dc.contributor.author | Ramsbottom, Roger | |
dc.contributor.author | Sandercock, Gavin | |
dc.contributor.author | Bocachica-González, Carlos Eduardo | |
dc.contributor.author | Ramírez-Vélez, Robinson | |
dc.contributor.author | Tomkinson, Grant | |
dc.date.accessioned | 2020-09-15T13:29:04Z | |
dc.date.available | 2020-09-15T13:29:04Z | |
dc.date.issued | 2020-09-24 | |
dc.identifier.citation | Nevill, A.M., Ramsbottom, R., Sandercock, G., Bocachica-González, C.E., Ramírez-Vélez, R. and Tomkinson, G. (2021) Developing a new curvilinear allometric model to improve the fit and validity of the 20-m shuttle run test as a predictor of cardiorespiratory fitness in adults and youth, Sports Medicine, 51, pp. 1581–1589. https://doi.org/10.1007/s40279-020-01346-0 | en |
dc.identifier.issn | 0112-1642 | en |
dc.identifier.doi | 10.1007/s40279-020-01346-0 | en |
dc.identifier.uri | http://hdl.handle.net/2436/623639 | |
dc.description | This is an accepted manuscript of an article published by Springer in Sports Medicine on 24 September 2020, available online at: https://doi.org/10.1007/s40279-020-01346-0 The accepted version of the publication may differ from the final published version. | en |
dc.description.abstract | Background and Objectives: Doubts have been raised concerning the validity of the 20m shuttle run test (20mSRT) as a predictor of cardiorespiratory fitness (CRF) in youth based on Léger’s equation/model. An alternative allometric model has been published recently that is thought to provide, not only a superior fit (criterion validity) but also a more biologically and physiologically interpretable model (construct validity). The purposes of this study were to explore whether allometry can provide a more valid predictor of CRF using 20mSRT compared with Léger’s equation/model. Methods: We fitted and compared Léger’s original model and an alternative allometric model using two cross-sectional datasets (youth, n=306; adult n=105) that contained measurements of CRF (V ̇O2peak /V ̇O2max) and 20mSRT performance. Quality-of-fit was assessed using explained variance (R2) and Bland and Altman’s limits of agreement. Results: The allometric models provided superior fits for the youth (explained variance R2=71.9%) and adult (R2=77.7%) datasets compared with Léger’s equation using their original fixed (R2=35.2%) or re-estimated parameter models (R2=65.9%), confirming that the allometric models demonstrate acceptable criterion validity. However, the allometric models also identified a non-linear “J-shaped” increase in energy cost (V ̇O2peak/V ̇O2max) with faster final shuttle-run speeds, (fitted speed exponent =1.52; 95% CI 1.38 to 1.65). Conclusion: Not only do allometric models provide more accurate predictions of CRF (V ̇O2peak/V ̇O2max; ml.kg-1.min-1) for both youth and adults (evidence of criterion validity), the “J-shaped” rise in energy demand with increasing final shuttle-run speed also provides evidence of construct validity, resulting in a more plausible, physiologically sound and interpretable model. | en |
dc.format | application/pdf | en |
dc.language.iso | en | en |
dc.publisher | Springer Nature | en |
dc.relation.url | https://link.springer.com/article/10.1007/s40279-020-01346-0 | en |
dc.subject | allometry | en |
dc.subject | 20-m shuttle run | en |
dc.subject | prediction | en |
dc.subject | aerobic fitness | en |
dc.subject | cardiorespiratory fitness | en |
dc.subject | youth | en |
dc.subject | adults | en |
dc.title | Developing a new curvilinear allometric model to improve the fit and validity of the 20-m shuttle run test as a predictor of cardiorespiratory fitness in adults and youth | en |
dc.type | Journal article | en |
dc.identifier.journal | Sports Medicine | en |
dc.date.updated | 2020-09-10T10:35:28Z | |
dc.date.accepted | 2020-09-04 | |
rioxxterms.funder | university of wolverhampton | en |
rioxxterms.identifier.project | UOW15092020AN | en |
rioxxterms.version | AM | en |
rioxxterms.licenseref.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | en |
rioxxterms.licenseref.startdate | 2021-09-24 | en |
dc.source.volume | 51 | |
dc.source.beginpage | 1581 | |
dc.source.endpage | 1589 | |
refterms.dateFCD | 2020-09-15T13:23:13Z | |
refterms.versionFCD | AM |