title: Factors associated with perceived exertion and estimated time limit at lactate threshold.
abstract: The purpose was to identify the most predictive parameters for perceived exertion and estimated time limit responses at the velocity corresponding to the lactate concentration threshold. The former scale concerns the subject's current status (how hard he feels the exercise currently is) whereas the latter scale deals with a subjective prediction of how long the current exercise level can be maintained. Multiple regression equations were developed among physiological, psychological, nutritional, and individual parameters (subjects' characteristics and performances) as independent variables, and perceived exertion or estimated time limit as dependent variables. Independent variables were collected before or during an incremental running field test. 94 regional to national level athletes (47 endurance-trained runners, 11 sprinters, and 36 handball players) participated. Multiple stepwise regression showed that Rating of Perceived Exertion and Estimated Time Limit at the lactate threshold were mainly mediated by factors relative to the performance expressed in percentage of the maximal aerobic velocity. Secondary factors which contribute significantly as perceptual predictors were related to various classes of factors except for psychological factors.
authors.affiliation: Laboratoire d'Etudes de la Motricité Humaine, Faculté des Sciences du Sport et de l'Education Physique, Université de Lille 2, Ronchin, France. mgarcin@mailsc.univ-lille2.fr
authors.forename: M
authors.initials: M
authors.lastname: Garcin
authors.forename: L
authors.initials: L
authors.lastname: Mille-Hamard
authors.forename: A
authors.initials: A
authors.lastname: Duhamel
authors.forename: F
authors.initials: F
authors.lastname: Boudin
authors.forename: C
authors.initials: C
authors.lastname: Reveillere
authors.forename: V
authors.initials: V
authors.lastname: Billat
authors.forename: M
authors.initials: M
authors.lastname: Lhermitte
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D001008:Anxiety Disorders / Q000175:diagnosis; D001290:Attitude; D005247:Feeding Behavior; D001068:Feeding and Eating Disorders / Q000175:diagnosis; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D019344:Lactic Acid / Q000097:blood / Q000378:metabolism*; D008297:Male; D018482:Muscle, Skeletal / Q000378:metabolism*; D009752:Nutritional Status; D010555:Personality Inventory; D005082:Physical Exertion; D011788:Quality of Life / Q000523:psychology; D012420:Running; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D019344:Lactic Acid