Maximal Lactate Steady State as a Training Stimulus

Abstract

The present study examined the use of the maximal lactate steady state (MLSS) as an exercise training stimulus in moderately trained runners. Fourteen healthy individuals (12 male, 2 female; age 25 ± 6 years, height 1.76 ± 0.05 m, body mass 76 ± 8 kg mean ± SD) took part in the study. Following determination of the lactate threshold (LT), V·O_2max, running velocity at MLSS (vMLSS) and a control period of 4 weeks, participants were pair matched and split into two cohorts performing either continuous (CONT: 2 sessions/week at vMLSS) or intermittent treadmill running (INT: 2 sessions/week, 3-min repetitions 0.5 km · h^-1 above and below vMLSS). vMLSS increased in CONT by 8 % from 12.3 ± 1.5 to 13.4 ± 1.6 km · h^-1 (p < 0.05) and in INT by 5 % from 12.2 ± 1.9 km · h^-1 to 12.9 ± 1.9 km · h^-1 (p < 0.05). Running speed at the LT increased by 7 % in the CONT group (p < 0.05) and by 9 % in the INT group (p < 0.05). V·O_2max increased by 10 % in the CONT group (p < 0.05) and by 6 % in INT (p < 0.05). Two sessions per week at vMLSS are capable of eliciting improvements in the physiological responses at LT, MLSS, and V·O_2max in moderately trained runners.

endurance - lactate - MLSS - testing - training

References

• 1 Acevedo E O, Goldfarb A H. Increased training intensity effects on plasma lactate, ventilatory threshold, and endurance.  Med Sci Sports Exerc. 1989;  21 563-568
• 2 Atkinson G, Reilly T. Circadian variation in sports performance.  Sports Med. 1996;  21 292-312
• 3 Belman M J, Gaesser G A. Exercise training below and above the lactate threshold in the elderly.  Med Sci Sports Exerc. 1991;  23 562-568
• 4 Beneke R. Anaerobic threshold, individual anaerobic threshold, and maximal lactate steady state in rowing.  Med Sci Sports Exerc. 1995;  27 863-867
• 5 Bergman B C, Brooks G A. Respiratory gas-exchange ratios during graded exercise in fed and fasted trained and untrained men.  J Appl Physiol. 1999;  86 479-487
• 6 Billat V, Sirvent P, Lepretre P-M, Koralsztein J P. Training effect on performance, substrate balance and blood lactate concentration at maximal lactate steady state in master endurance-runners.  Pflug Arch. 2004;  447 875-883
• 7 Billat V, Sirvent P, Py G, Koralsztein J-P, Mercier J. The concept of the Maximal Lactate Steady State: A bridge between biochemistry, physiology and sport science.  Sports Med. 2003;  33 407-426
• 8 Carter H, Jones A M, Doust J H. Effect of 6 weeks of endurance training on the lactate minimum speed.  J Sports Sci. 1999;  17 957-967
• 9 Conley D L, Krahenbuhl G S. Running economy and distance running performance of highly trained athletes.  Med Sci Sports Exerc. 1980;  12 357-360
• 10 Donovan C M, Brooks G A. Endurance training affects lactate clearance, not lactate production.  Am J Physiol. 1983;  244 E83-E92
• 11 Jones A M. A five year physiological case study of an Olympic runner.  Br J Sports Med. 1998;  32 39-43
• 12 Jones A M, Carter H. The effect of endurance training on parameters of aerobic fitness.  Sports Med. 2000;  29 373-386
• 13 Jones A M, Doust J H. A 1 percent treadmill grade most accurately reflects the energetic cost of outdoor running.  J Sports Sci. 1996;  14 321-327
• 14 Jones A M, Doust J H. The validity of the lactate minimum test for determination of the maximal lactate steady state.  Med Sci Sports Exerc. 1998;  30 1304-1313
• 15 Juel C. Training-induced changes in membrane transport proteins of human skeletal muscle.  Eur J Appl Physiol. 2006;  96 627-635
• 16 MacRae H S, Dennis S C, Bosch A N, Noakes T D. Effects of training on lactate production and removal during progressive exercise in humans.  J Appl Physiol. 1992;  72 1649-1656
• 17 Morgan D W, Daniels J T. Relationship between V·O_2max and the aerobic demand of running in elite long distance runners.  Int J Sports Med. 1994;  15 426-429
• 18 Weltman A, Seip R L, Snead D, Weltman J Y, Haskvitz E M, Evans W S, Veldhuis J D, Rogol A D. Exercise training at and above the lactate threshold in previously untrained women.  Int J Sports Med. 1992;  13 257-263