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DOI: 10.1055/s-0029-1220729
© Georg Thieme Verlag KG Stuttgart · New York
Blood Glucose Minimum Predicts Maximal Lactate Steady State on Running
Publication History
accepted after revision March 17, 2009
Publication Date:
30 June 2009 (online)
![](https://www.thieme-connect.de/media/sportsmed/200909/lookinside/thumbnails/10.1055-s-0029-1220729-1.jpg)
Abstract
This study analyzed if the running speed corresponding to glucose minimum (GM) could predict the maximal lactate steady state (MLSS). Thirteen physically active men (25.2±4.2 years, 73.4±8.0 kg, 180.0±1.0 cm) completed three running tests on different days: 1) a 1 600-m time trial to calculate the average speed; 2) after 10-min of recovery from a 150-m sprint to elevate [lac], participants performed 6 series of 800-m respectively at 78, 81, 84, 87, 90 and 93% of the 1 600-m speed to identify the lactate minimum (LM) and GM speeds and 3) 2–4 constant intensity exercise sessions for the MLSS. Repeated measures ANOVA showed no differences between running speeds associated to the GM (201.7±23.8 m·min−1), LM (200.0±23.9 m·min−1) and MLSS (201.5±23.1 m·min−1), with high correlation between GM vs. LM (r=0.984), GM vs. MLSS (r=0.947) and LM vs. MLSS (r=0.961) (P<0.01). Bland and Altman plots showed good agreement [Bias (±95% CI)] for MLSS and GM [0.2(15.3) m·min-1], MLSS and LM [−1.4(13.2) m·min−1], as well as for LM and GM [1.7(8.5) m·min−1]. These running speeds occurred at ∼84.4% of 1 600-m speed, which would have practical applications for exercise prescription. We concluded that GM running speed is a good predictor of the MLSS for physically active individuals.
Key words
lactate minimum - maximal blood lactate steady state - glucose minimum
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Correspondence
Dr. H. G. Simoes
Department of Physical Education
Catholic University of Brasilia
QS07 LT01 sn sala G116
72030-170 Distrito Federal
Brazil
Phone: +55/61/33 56 90 44
Fax: +55/61/33 56 93 50
Email: hgsimoes@gmail.com