title: Anaerobic running capacity determined from a 3-parameter systems model: relationship with other anaerobic indices and with running performance in the 800 m-run.
abstract: The purpose of this study was to compare anaerobic running capacity (ARC, i.e., the distance that can be run using only stored energy sources in the muscle) determined from a 3-parameter systems model with other anaerobic indices and with running performance in the 800 m. Seventeen trained male subjects (.VO(2max) = 66.54 +/- 7.29 ml . min (-1) . kg (-1)) performed an incremental test to exhaustion for the determination of .VO(2max) and peak treadmill velocity (PTV), five randomly ordered constant velocity tests at 95, 100, 105, 110, and 120 % of PTV to compute ARC and oxygen deficit (O(2)def, at 110 % of PTV), and a 800-m time trial to determine running performance (mean velocity over the distance, V (800 m)) and peak blood lactate concentration ([La (-)] (b, peak)). ARC (467 +/- 123 m) was positively correlated with O(2)def (56.35 +/- 18.47 ml . kg (-1); r = 0.57; p < 0.05), but not with [La (-)] (b, peak) (15.08 +/- 1.48 mmol . l (-1); r = - 0.16; p > 0.05). The O(2) equivalent of ARC (i.e., the product of ARC by the energy cost of running; 103.74 +/- 28.25 ml . kg (-1)), which is considered as an indirect estimation of O(2)def, was significantly higher than O(2)def (p < 0.01, effect size = 1.99). It was concluded that ARC is partially determined by anaerobic pathway, but that it probably does not provide an accurate measure of anaerobic capacity, if, however, O(2)def can be considered as a criterion measure for it.
authors.affiliation: Faculty of Sport Sciences, University of Lille 2, Ronchin, France. laurent.bosquet@umontreal.de
authors.forename: L
authors.initials: L
authors.lastname: Bosquet
authors.forename: P R
authors.initials: PR
authors.lastname: Delhors
authors.forename: A
authors.initials: A
authors.lastname: Duchene
authors.forename: G
authors.initials: G
authors.lastname: Dupont
authors.forename: L
authors.initials: L
authors.lastname: Leger
mesh_terms: D000328:Adult; D015308:Anaerobic Threshold / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D019344:Lactic Acid / Q000032:analysis / Q000097:blood; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D011792:Quebec; D012420:Running / Q000502:physiology*; D013647:Task Performance and Analysis
chemical_list: D019344:Lactic Acid