title: [Calculation of record-time in the 800-meter run: predictive value of Margaria's equation].
abstract: Margaria's equation (1976)--describing the relationship between the minimum time necessary to cover a distance equal or longer than 1,000 m (record-time TR) and the maximal oxygen consumption (VO2 max)--has been modified in order to be applied to the calculation of TR in the 800 m foot race. Fifteen subjects participated in this study (VO2 max = 63 +/- 3.5 ml O2 X kg-1 X min-1, measured TR = 131 +/- 10 seconds). It has been found the TR calculated from Margaria's equation (TRc) are underestimated (TRc = 104 +/- 10 seconds). By taking into account the actual energy cost of running (0.19 ml O2 X kg-1 X m-1) and the kinetics of VO2 at the onset of exercise, TRc averaged 133 +/- 8.5 seconds. Moreover, the relationship between TRc and measured TR (TRm) is highly significant (TRc = 50.4 + 0.65 TRm; r = 0.75; P less than 0.01). These results validate Margaria's equation modifications.
authors.forename: G
authors.initials: G
authors.lastname: Camus
authors.forename: H
authors.initials: H
authors.lastname: Thys
authors.forename: C
authors.initials: C
authors.lastname: Nopere
mesh_terms: D000328:Adult; D004734:Energy Metabolism; D006801:Humans; D008297:Male; D008433:Mathematics; D010101:Oxygen Consumption; D012420:Running; D013997:Time Factors
vernacular_title: Calcul du temps-record dans la course de 800 mètres: valeur prédictive de l'équation de Margaria.