Blood lactate threshold differences between arterialized and venous blood
Robergs, R.A., Chwalbinska-Moneta, J., Mitchell, J.B., Pascoe, D.D., Houmard, J., & Costill, D.L. (1990) Blood lactate threshold differences between arterialized and venous blood. International Journal of Sports Medicine, 11(6), pp. 446-451.
The purpose of this study was to investigate the differences between lactate thresholds determined from venous and arterialized blood. Seven endurance-trained college males performed an incremental bicycle ergometer exercise test until exhaustion. At the end of each 3 min stage, blood was sampled simultaneously from a hyperemized ear-lobe and an antecubital vein for the measurement of blood lactate (La-). Two-minute rest intervals separated each stage. Arterialized blood La-concentrations ([La-]) were significantly higher than venous blood at 350 W (14.5 and 9.7 mmol·l-1), maximal exercise (15.5 and 11.39 mmol·l-1), and throughout recovery. Arterialized [La-] was significantly higher than venous blood at the onset of blood La- accumulation (OBLA) (4.0 and 2.8±0.1 mmol·l-1), the individual anaerobic threshold (IAT) (3.4+0.3 and 2.1±0.1 mmol·l-1), and the ventilatory threshold (VT) (4.7±0.9 and 3.2±0.6 mmol·l-1). No significant differences were found between either La-threshold for arterialized or venous blood. The oxygen consumption (V̇O2) at OBLA was significantly lower when determined from arterialized blood La (2.3±0.2 and 2.8±0.2 l·min-1). No significant differences existed between the LT, OBLA, and IAT threshold-V̇O2 determinations from arterialized blood; however, significant differences were found between IAT-OBLA (2.1±0.2 and 2.8±0.2 l·min-1) and LT (2.2±0.2 l·min-1)-OBLA from venous blood. These results indicate that differences between venous and arterialized blood [La-] need to be considered when comparing different anaerobic threshold determinations.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
|Item Type:||Journal Article|
|Keywords:||lactic acid, adult; anaerobic capacity; arterial blood; article; bicycle ergometry; exercise; human; human experiment; lactate blood level; male; methodology; normal human; oxygen consumption; venous blood, Adult; Anaerobic Threshold; Capillaries; Comparative Study; Energy Metabolism; Exercise; Exercise Test; Human; Lactates; Lactic Acid; Male; Physical Endurance; Regression Analysis; Veins|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
|Deposited On:||18 Jul 2016 23:45|
|Last Modified:||18 Jul 2016 23:45|
Repository Staff Only: item control page