title: Verification criteria for the determination of Vo2 MAX in the field.
abstract: The purpose of this study was to evaluate if a verification test (VT) performed in the field offers more confident results than do traditional criteria in the determination of maximal oxygen uptake ((Equation is included in full-text article.)). Twelve amateur runners (age, 36.6 ± 6.6 years) performed a maximal graded field test and after 15 minutes of passive recovery a supramaximal test to exhaustion at 105% of their velocity associated with (Equation is included in full-text article.)(v(Equation is included in full-text article.)). Traditional criteria and 2 different verification criteria were evaluated. Verification criteria were (a) maximal oxygen uptake achieved in the VT ((Equation is included in full-text article.)) must be ≤5% higher than (Equation is included in full-text article.), and (b) no significant differences of means between tests. All participants met the first verification criterion although significant differences were found between (Equation is included in full-text article.)and (Equation is included in full-text article.)(59.4 ± 5.1 vs. 56.2 ± 4.7 ml·kg·min, p < 0.01). The criteria for the plateau, peak heart rate (HRpeak), maximum respiratory exchange ratio (RERmax), and maximum blood lactate concentration ([La]max) were satisfied by 75, 66, 92, and 66 of the participants, respectively. Kappa coefficients gave a significant and substantial agreement beyond chance between traditional criteria (p < 0.001). Despite the substantial agreement, traditional criteria induced the rejection of participants that might have achieved a true (Equation is included in full-text article.)with HRpeak and [La]max being the more stringent criteria for amateur runners. A verification protocol in the field using the criterion based on individual analysis is recommended.
authors.affiliation: 1Department of Physical Education and Sports, Faculty of Sports Sciences and Physical Education, University of A Coruña, A Coruña, Spain; and 2Postgraduate Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil.
authors.forename: Tania
authors.initials: T
authors.lastname: Sánchez-Otero
authors.forename: Eliseo
authors.initials: E
authors.lastname: Iglesias-Soler
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Boullosa
authors.forename: José L
authors.initials: JL
authors.lastname: Tuimil
mesh_terms: D000328:Adult; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D019344:Lactic Acid / Q000097:blood; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D011659:Pulmonary Gas Exchange / Q000502:physiology; D012420:Running / Q000502:physiology
chemical_list: D019344:Lactic Acid