Our adapted equation allows the Chester step test to be used to estimate peak aerobic capacity in children.Ĭardiorespiratory fitness test, prediction equation, submaximal test, children, obesity The Chester step test can assess cardiorespiratory fitness in lean and obese children in clinical settings. VO 2 was lower in participants with high BMI z-scores and in female subjects. VO 2 (ml/kg/min) can be predicted using the following equation: VO 2 = 22.82 ˗ ˗ ˗ + ˗ ˗. Estimated VO 2peak was then determined from the heart rate-VO 2 linear relationship extrapolated to maximal heart rate (220 minus age, in beats.min ˗1). A statistical Tobit model was used to predict VO 2 from age, gender, body mass index (BMI) z-score and intensity levels. VO 2 was measured with indirect calorimetry. We performed a maximal step test, which consisted of 2-minute stages with increasing intensity to exhaustion, in 169 lean and obese children (age range: 7–16 years). We aimed to elaborate a model predicting peak oxygen consumption (VO 2) in lean and obese children with use of the submaximal Chester step test. Maximal exercise testing may be difficult to perform in clinical practice, especially in obese children who have low cardiorespiratory fitness and exercise tolerance. G Paediatric Sports Medicine Consultation, Service of General Paediatrics, Department of Child and Adolescent, University Hospitals of Geneva and University of Geneva, Switzerland A Paediatric Obesity Consultation, Service of Paediatric Specialties, Department of Child and Adolescent, University Hospitals of Geneva and University of Geneva, Switzerlandī Centre Universitaire de Cardiologie Pédiatrique, University of Lausanne and Geneva, SwitzerlandĬ Institute for Research in Rehabilitation, Clinique Romande de Réadaptation SuvaCare, Sion, Switzerland.ĭ Paediatric Department, Romand Valais Hospital, Sion, SwitzerlandĮ Paediatric Cardiology Unit, Service of Paediatric Specialties, Department of Child and Adolescent, University Hospitals of Geneva and University of Geneva, Switzerlandį Obesity Prevention and Care Programme “Contrepoids”, Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine, Primary Care and Emergency, University Hospitals of Geneva and University of Geneva, Switzerland
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