title: Estimating oxygen consumption from heart rate using adaptive neuro-fuzzy inference system and analytical approaches.
abstract: In new approaches based on adaptive neuro-fuzzy systems (ANFIS) and analytical method, heart rate (HR) measurements were used to estimate oxygen consumption (VO2). Thirty-five participants performed Meyer and Flenghi's step-test (eight of which performed regeneration release work), during which heart rate and oxygen consumption were measured. Two individualized models and a General ANFIS model that does not require individual calibration were developed. Results indicated the superior precision achieved with individualized ANFIS modelling (RMSE = 1.0 and 2.8 ml/kg min in laboratory and field, respectively). The analytical model outperformed the traditional linear calibration and Flex-HR methods with field data. The General ANFIS model's estimates of VO2 were not significantly different from actual field VO2 measurements (RMSE = 3.5 ml/kg min). With its ease of use and low implementation cost, the General ANFIS model shows potential to replace any of the traditional individualized methods for VO2 estimation from HR data collected in the field.
authors.affiliation: Department of Mathematics and Industrial Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3A7. Electronic address: akolus@uwaterloo.ca.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Kolus
authors.affiliation: Department of Mathematics and Industrial Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3A7.
authors.forename: Philippe-Antoine
authors.initials: PA
authors.lastname: Dubé
authors.affiliation: Department of Mathematics and Industrial Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3A7.
authors.forename: Daniel
authors.initials: D
authors.lastname: Imbeau
authors.affiliation: Department of Mathematics and Industrial Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec, Canada H3C 3A7.
authors.forename: Richard
authors.initials: R
authors.lastname: Labib
authors.affiliation: Ministère des Ressources Naturelles et de la Faune, Direction de la Recherche Forestière, Québec, Canada.
authors.forename: Denise
authors.initials: D
authors.lastname: Dubeau
mesh_terms: D000328:Adult; D004734:Energy Metabolism; D005080:Exercise Test; D017143:Fuzzy Logic; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D010101:Oxygen Consumption / Q000502:physiology*; D013647:Task Performance and Analysis
keywords: Heart rate monitoring; Oxygen consumption; Work design