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Prediction of Cardiorespiratory Fitness by the Six-Minute Step Test and Its Association with Muscle Strength and Power in Sedentary Obese and Lean Young Women: A Cross-Sectional Study

Impaired cardiorespiratory fitness (CRF) is a hallmark characteristic in obese and lean sedentary young women. Peak oxygen consumption (VO2peak) prediction from the six-minute step test (6MST) has not been established for sedentary females. It is recognized that lower-limb muscle strength and power...

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Published in:PloS one 2015-12, Vol.10 (12), p.e0145960-e0145960
Main Authors: Carvalho, Lívia Pinheiro, Di Thommazo-Luporini, Luciana, Aubertin-Leheudre, Mylène, Bonjorno Junior, José Carlos, de Oliveira, Cláudio Ricardo, Luporini, Rafael Luís, Mendes, Renata Gonçalves, Zangrando, Katiany Thais Lopes, Trimer, Renata, Arena, Ross, Borghi-Silva, Audrey
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Language:English
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Summary:Impaired cardiorespiratory fitness (CRF) is a hallmark characteristic in obese and lean sedentary young women. Peak oxygen consumption (VO2peak) prediction from the six-minute step test (6MST) has not been established for sedentary females. It is recognized that lower-limb muscle strength and power play a key role during functional activities. The aim of this study was to investigate cardiorespiratory responses during the 6MST and CPX and to develop a predictive equation to estimate VO2peak in both lean and obese subjects. Additionally we aim to investigate how muscle function impacts functional performance. Lean (LN = 13) and obese (OB = 18) women, aged 20-45, underwent a CPX, two 6MSTs, and isokinetic and isometric knee extensor strength and power evaluations. Regression analysis assessed the ability to predict VO2peak from the 6MST, age and body mass index (BMI). CPX and 6MST main outcomes were compared between LN and OB and correlated with strength and power variables. CRF, functional capacity, and muscle strength and power were lower in the OB compared to LN (
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0145960