Estimation of the Maximal Lactate Steady State in Endurance Runners.
This study aimed to predict the velocity corresponding to the maximal lactate steady state (MLSSV) from non-invasive variables obtained during a maximal multistage running field test (modified University of Montreal Track Test, UMTT), and to determine whether a single constant velocity test (CVT), performed several days after the UMTT, could estimate the MLSSV. Within 4-5 weeks, 20 male runners performed: 1) a modified UMTT, and 2) several 30 min CVTs to determine MLSSV to a precision of 0.25 km·h(-1). Maximal aerobic velocity (MAV) was the best predictor of MLSSV. A regression equation was obtained: MLSSV=1.425+(0.756·MAV); R(2)=0.63. Running velocity during the CVT (VCVT) and blood lactate at 6 (La6) and 30 (La30) min further improved the MLSSV prediction: MLSSV=VCVT+0.503 - (0.266·ΔLa30-6); R(2)=0.66. MLSSV can be estimated from MAV during a single maximal multistage running field test among a homogeneous group of trained runners. This estimation can be further improved by performing an additional CVT. In terms of accuracy, simplicity and cost-effectiveness, the reported regression equations can be used for the assessment and training prescription of endurance runners.
Studies, Research and Sport Medicine Center, Government of Navarra, Pamplona, Spain.
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Llodio
Studies, Research and Sport Medicine Center, Government of Navarra, Pamplona, Spain.
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Gorostiaga
Studies, Research and Sport Medicine Center, Government of Navarra, Pamplona, Spain.
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Garcia-Tabar
Faculty of Physical Activity and Sports Science University of the Basque Country Vitoria-Gastelz, Spain.
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Granados
Studies, Research and Sport Medicine Center, Government of Navarra, Pamplona, Spain.
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Sánchez-Medina
D000328:Adult; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D019344:Lactic Acid / Q000097:blood*; D008297:Male; D010807:Physical Endurance; D012420:Running / Q000502:physiology*
D019344:Lactic Acid