1. Influence of grade of obesity on the achievement of VO2max using an incremental treadmill test in youths
- Author
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Thierry Peze, Louis Toulouse, Gautier Zunquin, Patrick Mucci, Université de Lille, Univ. Artois, Univ. Littoral Côte d’Opale, Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS], Mouvement, Équilibre, Performance, Santé [MEPS], URePSSS - Activité Physique, Muscle, Santé (APMS), Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 (URePSSS), Université d'Artois (UA)-Université de Lille-Université du Littoral Côte d'Opale (ULCO)-Université d'Artois (UA)-Université de Lille-Université du Littoral Côte d'Opale (ULCO), Université de Pau et des Pays de l'Adour (UPPA), Activité Physique, Muscle, Santé - URePSSSS (APMS), Université d'Artois (UA)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Université d'Artois (UA)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille, and Université du Littoral Côte d'Opale (ULCO)
- Subjects
Male ,obesity ,Pediatric Obesity ,medicine.medical_specialty ,Adolescent ,[SDV]Life Sciences [q-bio] ,Physical Exertion ,030209 endocrinology & metabolism ,Physical Therapy, Sports Therapy and Rehabilitation ,Plateau (mathematics) ,03 medical and health sciences ,Oxygen Consumption ,0302 clinical medicine ,Heart Rate ,medicine ,Humans ,Orthopedics and Sports Medicine ,adolescents ,Treadmill ,Child ,Children ,ComputingMilieux_MISCELLANEOUS ,VO2max ,treadmill ,business.industry ,musculoskeletal, neural, and ocular physiology ,030229 sport sciences ,medicine.disease ,Obesity ,Test (assessment) ,Exercise Test ,Respiratory Mechanics ,Physical therapy ,Female ,Perception ,business ,human activities - Abstract
International audience; The purpose of this study was to analyze the influence of grade of obesity on the probability of achieving a VO2 plateau and threshold secondary criteria for verifying VO2max during a treadmill walk test in youths with obesity. Therefore, 72 youths with obesity (aged 8-16) performed an incremental treadmill walk test to exhaustion during which oxygen uptake (VO2), minute ventilation (VE), heart rate (HR) and rating of perceived exertion were continuously measured. HR corresponding to a “hard” level of perceived exertion was reported and expressed as a percentage of the predicted HRmax. The rate of achievement of criteria for validation VO2max (VO2 plateau; HR>95% theoretical HRmax; RER>1.0; rating of perceived exertion ≥ “hard”) was compared between participants with grade I and grade II obesity. 37% of the participants achieved a VO2 plateau and 23% achieved both an HR>95% and RER >1.0. Youths with grade II obesity had lower minute ventilation (p95% (OR = 0.33; P=0.06) and a “hard” rating of perceived exertion than grade I (OR = 4.5; P=0.07). However, there was no influence of grade of obesity on the achievement of VO2 plateau, and RER>1.0.
- Published
- 2021