A new equation based on the 6-min walking test to predict VO2peak in women with obesity |
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| Authors: | Lore Metz David Thivel Bruno Peirrera Ruddy Richard Valérie Julian Martine Duclos |
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| Affiliation: | 1. Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P), Clermont Auvergne University, Clermont-Ferrand, France;2. Biostatistics Unit (DRCI), Clermont-Ferrand University Hospital, Clermont-Ferrand, France;3. Unité de Nutrition Humaine, Clermont Université, Université d'Auvergne, Clermont-Ferrand, France;4. INRA, UMR 1019, UNH, CRNH Auvergne, Clermont-Ferrand, France;5. Department of Sport Medicine and Functional Exploration, University Hospital CHU G. Montpied, Clermont-Ferrand, France;6. Department of Sport Medicine and Functional Exploration, University Hospital CHU G. Montpied, Clermont-Ferrand, France |
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| Abstract: | Objective: The 6-min walking test (6?MWT) is commonly used to assess obese patients’ aerobic fitness, but it has rarely been compared with a direct measurement of maximal aerobic capacities (VO2max or VO2peak) in obese adults. The aim of this study was to investigate the relationship between the distance covered during a 6?MWT with objectively measured VO2peak and to propose a new equation to predict VO2peak from this walking test in obese patients.Methods: One hundred and thirty-seven obese patients (45.6?±?12.5?years) admitted to our hospital for a multidisciplinary rehabilitation program were enrolled. After assessment of their body composition, the participants were asked to perform a 6?MWT and their maximal aerobic capacities (VO2peak) were measured.Result: There is a significant linear relation between VO2peak and the distance covered during the 6?MWT (p?r?=?0.349). The determinant of VO2peak was body mass index, waist-to-hip ratio, fat free mass, leading to the follow prediction equation VO2peak such as VO2peak (l/min)?=?(body mass index ×0.0150065)???(waist-to-hip-ratio?×?0.8595088)?+?(fat-free-mass?×?0.0295478)?+?(6-min walk test?×0.0020672)???0.5853372.Conclusion: The 6-min walk test is a reliable method to reflect obese women’s aerobic capacities and the distance covered can be used to accurately estimate VO2peak according to our newly proposed equation.- Implication for rehabilitation
Obesity is a worldwide disease and physical capacity evaluation is a key point for rehabilitation. The six minutes’ walk test is commonly used in obese people to assess aerobic fitness. This study proposes a new equation using 6?MWT performance to estimate VO2peak.
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| Keywords: | Obesity exercise 6-min walking test aerobic capacity |
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