Validation of the Polar Fitness Test for Estimation of Maximal Oxygen Consumption at Rest in Medically Supervised Exercise Training: Comparison with CPET and the 6-Minute Walk Test †
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| Vydáno v: | Sensors vol. 25, no. 18 (2025), p. 5649-5665 |
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| Další autoři: | , , , , , |
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MDPI AG
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| On-line přístup: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 045 | 2 | |b d20250101 |b d20251231 | |
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| 100 | 1 | |a Neudorfer, Michael |u University Institute of Sports Medicine, Prevention and Rehabilitation, University Hospital Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria | |
| 245 | 1 | |a Validation of the Polar Fitness Test for Estimation of Maximal Oxygen Consumption at Rest in Medically Supervised Exercise Training: Comparison with CPET and the 6-Minute Walk Test † | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a The Polar Fitness Test (PFT) estimates maximal oxygen consumption (<inline-formula>V̇</inline-formula>O2max) under resting conditions using heart rate data from the manufacturer’s wearable devices. We aimed to validate the PFT in a population with cardiovascular risk factors and to compare its results with five established equations predicting <inline-formula>V̇</inline-formula>O2max based on the 6-min walk test (6MWT). Twenty-four participants (9 female; age 57.4 ± 10.2 years) undergoing medically supervised exercise training—including seven individuals on heart rate-limiting medication—completed the PFT, 6MWT, and cardiopulmonary exercise testing (CPET), which served as the criterion <inline-formula>V̇</inline-formula>O2max measurement. The PFT showed a mean absolute percent-age error (MAPE) of 13.7%, an intraclass correlation coefficient (ICC) of 0.743, a mean bias of −1.0 mL/min/kg, and limits of agreement (LoA) of ±11.4 mL/min/kg compared to CPET. Among the 6MWT-based equations, only the Porcari equation demonstrated similar performance (MAPE 12.6%, ICC 0.725, mean bias 0.2 mL/min/kg, LoA ± 9.7 mL/min/kg), while other equations showed larger errors and systematic deviations. Our data indicate that the PFT may present an easily accessible option to estimate <inline-formula>V̇</inline-formula>O2max on population level when exercise-based testing is not feasible. However, its variability limits use for individual clinical decisions, reaffirming the relevance of CPET for accurate assessment. | |
| 651 | 4 | |a Germany | |
| 653 | |a Patients | ||
| 653 | |a Exercise | ||
| 653 | |a Accuracy | ||
| 653 | |a Validity | ||
| 653 | |a Physical fitness | ||
| 653 | |a Mortality | ||
| 653 | |a Sensors | ||
| 653 | |a Sports medicine | ||
| 653 | |a Hospitals | ||
| 653 | |a Wearable computers | ||
| 653 | |a Rehabilitation | ||
| 653 | |a Skin | ||
| 653 | |a Fitness equipment | ||
| 653 | |a Walking | ||
| 653 | |a Validation studies | ||
| 653 | |a Fitness training programs | ||
| 653 | |a Heart rate | ||
| 700 | 1 | |a Ötzlinger Lukas |u University Institute of Sports Medicine, Prevention and Rehabilitation, University Hospital Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria | |
| 700 | 1 | |a Kumar, Devender |u Ludwig Boltzmann Institute for Digital Health and Prevention, 5020 Salzburg, Austria | |
| 700 | 1 | |a Niebauer, Josef |u University Institute of Sports Medicine, Prevention and Rehabilitation, University Hospital Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria | |
| 700 | 1 | |a Smeddinck, Jan David |u Ludwig Boltzmann Institute for Digital Health and Prevention, 5020 Salzburg, Austria | |
| 700 | 1 | |a Sareban Mahdi |u University Institute of Sports Medicine, Prevention and Rehabilitation, University Hospital Salzburg, Paracelsus Medical University, 5020 Salzburg, Austria | |
| 700 | 1 | |a Treff Gunnar |u Ludwig Boltzmann Institute for Digital Health and Prevention, 5020 Salzburg, Austria | |
| 773 | 0 | |t Sensors |g vol. 25, no. 18 (2025), p. 5649-5665 | |
| 786 | 0 | |d ProQuest |t Health & Medical Collection | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3254645709/abstract/embedded/H09TXR3UUZB2ISDL?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3254645709/fulltextwithgraphics/embedded/H09TXR3UUZB2ISDL?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3254645709/fulltextPDF/embedded/H09TXR3UUZB2ISDL?source=fedsrch |