Cross-validation of predictive equation for cardiorespiratory fitness by modified shuttle walk test in adults with schizophrenia: a secondary analysis of the cortex-sp study

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dc.contributor.authorTous Espelosín, Mikel
dc.contributor.authorRuiz de Azúa García, Sonia
dc.contributor.authorIriarte Yoller, Nagore
dc.contributor.authorSánchez Gómez, Pedro Manuel
dc.contributor.authorElizagarate Zabala, Edorta
dc.contributor.authorSampedro, Agurne
dc.contributor.authorMaldonado-Martín, Sara
dc.date.accessioned2025-06-05T10:26:15Z
dc.date.available2025-06-05T10:26:15Z
dc.date.issued2021-10-29
dc.date.updated2025-06-05T10:26:15Z
dc.description.abstractCardiorespiratory fitness (CRF) can be direct or estimated from different field tests. The Modified Shuttle Walk Test (MSWT) is suitable for all levels of function, allowing a peak response to be elicited. Therefore, we aimed (1) to validate the equation presented in the original study by Singh et al. for evaluating the relationship between MSWT with peak oxygen uptake (VO2peak) in adults with schizophrenia (SZ), (2) to develop a new equation for the MSWT to predict VO2peak, and (3) to validate the new equation. Participants (N = 144, 41.3 ± 10.2 years old) with SZ performed a direct measurement of VO2peak through a cardiopulmonary exercise test and the MSWT. A new equation incorporating resting heart rate, body mass index, and distance from MSWT (R2 = 0.617; adjusted R2 = 0.60; p < 0.001) performs better than the Singh et al. equation (R2 = 0.57; adjusted R2 = 0.57; p < 0.001) to estimate VO2peak for the studied population. The posteriori cross-validation method confirmed the model’s stability (R2 = 0.617 vs. 0.626). The findings of the current study support the validity of the new regression equation incorporating resting heart rate, body mass index, and distance from MSWT to predict VO2peak for assessment of CRF in people with SZ.en
dc.description.sponsorshipThis study was supported by the Spanish Ministry of Economy and Competitiveness “Fondo de Investigación Sanitaria del Instituto de Salud Carlos III” (PI16/01022) and the Department of Education and Science of the Basque Government (Team A) (IT946-16). MTE was supported by the University of the Basque Country (UPV/EHU) with a predoctoral grant. AS was supported by a Fellowship from the Fundación Tatiana Pérez de Guzmán el Bueno.en
dc.identifier.citationTous-Espelosin, M., de Azua, S. R., Iriarte-Yoller, N., Sanchez, P. M., Elizagarate, E., Sampedro, A., & Maldonado-Martín, S. (2021). Cross-validation of predictive equation for cardiorespiratory fitness by modified shuttle walk test in adults with schizophrenia: a secondary analysis of the cortex-sp study. International Journal of Environmental Research and Public Health, 18(21). https://doi.org/10.3390/IJERPH182111390
dc.identifier.doi10.3390/IJERPH182111390
dc.identifier.eissn1660-4601
dc.identifier.issn1661-7827
dc.identifier.urihttps://hdl.handle.net/20.500.14454/2943
dc.language.isoeng
dc.publisherMDPI
dc.rights© 2021 by the authors
dc.subject.otherAssessment
dc.subject.otherEquation for estimation
dc.subject.otherField test
dc.subject.otherPeak oxygen uptake
dc.subject.otherValidation
dc.titleCross-validation of predictive equation for cardiorespiratory fitness by modified shuttle walk test in adults with schizophrenia: a secondary analysis of the cortex-sp studyen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue21
oaire.citation.titleInternational Journal of Environmental Research and Public Health
oaire.citation.volume18
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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