Devlin, J., Paton, B., Poole, L., Sun, W., Ferguson, C., Wilson, J. and Kemi, O. J. (2014) Blood lactate clearance after maximal exercise depends on active recovery intensity. Journal of Sports Medicine and Physical Fitness, 54(3), pp. 271-278.
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Publisher's URL: http://www.minervamedica.it/en/journals/sports-med-physical-fitness/article.php?cod=R40Y2014N03A0271
Abstract
AIM: High-intensity exercise is time-limited by onset of fatigue, marked by accumulation of blood lactate. This is accentuated at maximal, all-out exercise that rapidly accumulates high blood lactate. The optimal active recovery intensity for clearing lactate after such maximal, all-out exercise remains unknown. Thus, we studied the intensity-dependence of lactate clearance during active recovery after maximal exercise.<p></p> METHODS: We constructed a standardized maximal, all-out treadmill exercise protocol that predictably lead to voluntary exhaustion and blood lactate concentration >10 mM. Next, subjects ran series of all-out bouts that increased blood lactate concentration to 11.5±0.2 mM, followed by recovery exercises ranging 0% (passive)-100% of the lactate threshold.<p></p> RESULTS: Repeated measurements showed faster lactate clearance during active versus passive recovery (P<0.01), and that active recovery at 60-100% of lactate threshold was more efficient for lactate clearance than lower intensity recovery (P<0.05). Active recovery at 80% of lactate threshold had the highest rate of and shortest time constant for lactate clearance (P<0.05), whereas the response during the other intensities was graded (100%=60%>40%>passive recovery, P<0.05).<p></p> CONCLUSION: Active recovery after maximal all-out exercise clears accumulated blood lactate faster than passive recovery in an intensity-dependent manner, with maximum clearance occurring at active recovery of 80% of lactate threshold.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Kemi, Dr Ole and Ferguson, Dr Carrie and Wilson, Mr John |
Authors: | Devlin, J., Paton, B., Poole, L., Sun, W., Ferguson, C., Wilson, J., and Kemi, O. J. |
College/School: | College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health |
Journal Name: | Journal of Sports Medicine and Physical Fitness |
Journal Abbr.: | J Sports Med Phys Fitness |
Publisher: | Edizioni Minerva Medica |
ISSN: | 0022-4707 |
ISSN (Online): | 1827-1928 |
Copyright Holders: | Copyright © 2014 Edizioni Minerva Medica |
First Published: | First published in Journal of Sports Medicine and Physical Fitness 54(3):271-278 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher. |
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