{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,3]],"date-time":"2022-04-03T13:35:04Z","timestamp":1648992904602},"reference-count":35,"publisher":"Walter de Gruyter GmbH","issue":"2","license":[{"start":{"date-parts":[[2017,11,27]],"date-time":"2017-11-27T00:00:00Z","timestamp":1511740800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,11,27]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p> Maximal oxygen uptake (VO<jats:sub>2<\/jats:sub>max) is one of the most distinguished parameters in endurance sports and plays an important role, for instance, in predicting endurance performance. Different models have been used to estimate VO<jats:sub>2<\/jats:sub>max or performance based on VO<jats:sub>2<\/jats:sub>max. These models can use linear or nonlinear approaches for modeling endurance performance. The aim of this study was to estimate VO<jats:sub>2<\/jats:sub>max in healthy adults based on the Queens College Step Test (QCST) as well as the Shuttle Run Test (SRT) and to use these values for linear and nonlinear models in order to predict the performance in a maximal 1000 m run (i.e. the speed in an incremental 4\u00d71000 m Field Test (FT)). 53 female subjects participated in these three tests (QCST, SRT, FT). Maximal oxygen uptake values from QCST and SRT were used as (a) predictor variables in a multiple linear regression (MLR) model and as (b) input variables in a multilayer perceptron (MLP) after scaling in preprocessing. Model output was speed [km\u00b7h<jats:sup>\u22121<\/jats:sup>] in a maximal 1000 m run. Maximal oxygen uptake values estimated from QCST (40.8 \u00b1 3.5 ml\u00b7kg<jats:sup>\u22121<\/jats:sup>\u00b7min<jats:sup>\u22121<\/jats:sup>) and SRT (46.7 \u00b1 4.5 ml\u00b7kg<jats:sup>\u22121<\/jats:sup>\u00b7min<jats:sup>\u22121<\/jats:sup>) were significantly correlated (r = 0.38, p &lt; 0.01) and maximal mean speed in the FT was 12.8 \u00b1 1.6 km\u00b7h<jats:sup>\u22121<\/jats:sup>. Root mean squared error (RMSE) of the cross validated MLR model was 0.89 km\u00b7h<jats:sup>\u22121<\/jats:sup> while it was 0.95 km\u00b7h<jats:sup>\u22121<\/jats:sup> for MLP. Results showed that the accuracy of the applied MLP was comparable to the MLR, but did not outperform the linear approach.<\/jats:p>","DOI":"10.1515\/ijcss-2017-0007","type":"journal-article","created":{"date-parts":[[2017,12,6]],"date-time":"2017-12-06T22:16:34Z","timestamp":1512598594000},"page":"78-87","source":"Crossref","is-referenced-by-count":0,"title":["Linear and Nonlinear Prediction Models Show Comparable Precision for Maximal Mean Speed in a 4x1000 m Field Test"],"prefix":"10.1515","volume":"16","author":[{"given":"J. M.","family":"J\u00e4ger","sequence":"first","affiliation":[{"name":"Institute of sport science, Justus-Liebig-University Gie\u00dfen, Gie\u00dfen , Germany"}]},{"given":"J.","family":"Kurz","sequence":"additional","affiliation":[{"name":"Institute of sport science, Justus-Liebig-University Gie\u00dfen, Gie\u00dfen , Germany"}]},{"given":"H.","family":"M\u00fcller","sequence":"additional","affiliation":[{"name":"Institute of sport science, Justus-Liebig-University Gie\u00dfen, Gie\u00dfen , Germany"}]}],"member":"374","published-online":{"date-parts":[[2017,11,30]]},"reference":[{"key":"2021040703155037117_j_ijcss-2017-0007_ref_001_w2aab3b7b1b1b6b1ab1ab1Aa","doi-asserted-by":"crossref","unstructured":"Abut, F., & Akay, M. F. (2015). Machine learning and statistical methods for the prediction of maximal oxygen uptake: recent advances. 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