Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population

Abstract Purpose The FitMáx© was developed as a questionnaire-based instrument to estimate Cardiorespiratory Fitness (CRF) expressed as oxygen uptake at peak exercise (VO2peak). Test–retest reliability is a clinometric measurement property, which defines stability over time if multiple measurements...

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Main Authors: Renske Meijer, Goof Schep, Marta Regis, Nicole E. Papen-Botterhuis, Hans H. C. M. Savelberg, Martijn van Hooff
Format: Article
Language:English
Published: SpringerOpen 2024-01-01
Series:Journal of Patient-Reported Outcomes
Subjects:
Online Access:https://doi.org/10.1186/s41687-023-00682-9
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author Renske Meijer
Goof Schep
Marta Regis
Nicole E. Papen-Botterhuis
Hans H. C. M. Savelberg
Martijn van Hooff
author_facet Renske Meijer
Goof Schep
Marta Regis
Nicole E. Papen-Botterhuis
Hans H. C. M. Savelberg
Martijn van Hooff
author_sort Renske Meijer
collection DOAJ
description Abstract Purpose The FitMáx© was developed as a questionnaire-based instrument to estimate Cardiorespiratory Fitness (CRF) expressed as oxygen uptake at peak exercise (VO2peak). Test–retest reliability is a clinometric measurement property, which defines stability over time if multiple measurements are performed (i.e. reliability). The present study aimed to assess the test–retest reliability of the FitMáx©-questionnaire in different patient groups. Patients and methods A total of 127 cardiac, pulmonary and oncology patients and healthy subjects aged 19–84 years who completed the questionnaire twice within an average of 18 days were included for analysis. Participants were in a stable clinical situation (no acute disease or participating in a training program). To determine the test–retest reliability, the Intraclass Correlation Coefficient (ICC) and Standard Error of the Measurement (SEM) was calculated between the first (T0) and second (T1) administration of the questionnaires. Results An excellent agreement was found between the FitMáx©-questionnaire scores at T0 and T1, with an ICC of 0.97 (SEM 1.91) in the total study population and an ICC ranging from 0.93 to 0.98 (SEM 1.52–2.27) in the individual patient groups. Conclusion The FitMáx©-questionnaire proves to be reliable and stable over time to estimate CRF of patients and healthy subjects. Trial registration NTR (Netherlands Trial Register), NL8846. Registered 25 August 2020, https://trialsearch.who.int/Trial2.aspx?TrialID=NL8846
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spelling doaj.art-ede2c07188c74e25a789feb6d5aaf76d2024-01-07T12:28:31ZengSpringerOpenJournal of Patient-Reported Outcomes2509-80202024-01-01811710.1186/s41687-023-00682-9Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy populationRenske Meijer0Goof Schep1Marta Regis2Nicole E. Papen-Botterhuis3Hans H. C. M. Savelberg4Martijn van Hooff5Department of Sports and Exercise, Máxima Medical Centre (Máxima MC)Department of Sports and Exercise, Máxima Medical Centre (Máxima MC)Department of Mathematics and Computer Science, University of TechnologyAcademy, Máxima Medical Center (Máxima MC)Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht UniversityDepartment of Sports and Exercise, Máxima Medical Centre (Máxima MC)Abstract Purpose The FitMáx© was developed as a questionnaire-based instrument to estimate Cardiorespiratory Fitness (CRF) expressed as oxygen uptake at peak exercise (VO2peak). Test–retest reliability is a clinometric measurement property, which defines stability over time if multiple measurements are performed (i.e. reliability). The present study aimed to assess the test–retest reliability of the FitMáx©-questionnaire in different patient groups. Patients and methods A total of 127 cardiac, pulmonary and oncology patients and healthy subjects aged 19–84 years who completed the questionnaire twice within an average of 18 days were included for analysis. Participants were in a stable clinical situation (no acute disease or participating in a training program). To determine the test–retest reliability, the Intraclass Correlation Coefficient (ICC) and Standard Error of the Measurement (SEM) was calculated between the first (T0) and second (T1) administration of the questionnaires. Results An excellent agreement was found between the FitMáx©-questionnaire scores at T0 and T1, with an ICC of 0.97 (SEM 1.91) in the total study population and an ICC ranging from 0.93 to 0.98 (SEM 1.52–2.27) in the individual patient groups. Conclusion The FitMáx©-questionnaire proves to be reliable and stable over time to estimate CRF of patients and healthy subjects. Trial registration NTR (Netherlands Trial Register), NL8846. Registered 25 August 2020, https://trialsearch.who.int/Trial2.aspx?TrialID=NL8846https://doi.org/10.1186/s41687-023-00682-9Cardiorespiratory fitnessPatient-reported outcomeQuestionnairePeak oxygen uptakeCardiopulmonary exercise testing
spellingShingle Renske Meijer
Goof Schep
Marta Regis
Nicole E. Papen-Botterhuis
Hans H. C. M. Savelberg
Martijn van Hooff
Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
Journal of Patient-Reported Outcomes
Cardiorespiratory fitness
Patient-reported outcome
Questionnaire
Peak oxygen uptake
Cardiopulmonary exercise testing
title Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
title_full Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
title_fullStr Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
title_full_unstemmed Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
title_short Test–retest reliability of the FitMáx©-questionnaire in a clinical and healthy population
title_sort test retest reliability of the fitmax c questionnaire in a clinical and healthy population
topic Cardiorespiratory fitness
Patient-reported outcome
Questionnaire
Peak oxygen uptake
Cardiopulmonary exercise testing
url https://doi.org/10.1186/s41687-023-00682-9
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