最大乳酸稳态作为一种训练刺激因素。
Maximal lactate steady state as a training stimulus.
作者信息
Philp A, Macdonald A L, Carter H, Watt P W, Pringle J S
机构信息
Sport and Exercise Sciences, University of Brighton, Eastbourne, United Kingdom.
出版信息
Int J Sports Med. 2008 Jun;29(6):475-9. doi: 10.1055/s-2007-965320. Epub 2008 Feb 26.
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), VO2max, 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). VO2max 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 VO2max in moderately trained runners.
本研究探讨了最大乳酸稳态（MLSS）作为中等训练水平跑步者运动训练刺激因素的应用。14名健康个体（12名男性，2名女性；年龄25±6岁，身高1.76±0.05米，体重76±8千克，均值±标准差）参与了该研究。在确定乳酸阈值（LT）、最大摄氧量（VO2max）、MLSS时的跑步速度（vMLSS）以及经过4周的对照期后，参与者进行配对并分为两组，一组进行持续跑（CONT：每周2次，以vMLSS速度进行），另一组进行间歇性跑步机跑步（INT：每周2次，以高于和低于vMLSS 0.5千米·小时-1的速度进行3分钟重复跑）。CONT组的vMLSS从12.3±1.5千米·小时-1增加了8%，至13.4±1.6千米·小时-1（p<0.05），INT组从12.2±1.9千米·小时-1增加了5%，至12.9±1.9千米·小时-1（p<0.05）。CONT组在LT时的跑步速度提高了7%（p<0.05），INT组提高了9%（p<0.05）。CONT组的VO2max提高了10%（p<0.05），INT组提高了6%（p<0.05）。对于中等训练水平的跑步者，每周两次以vMLSS速度进行训练能够使他们在LT、MLSS和VO2max时的生理反应得到改善。
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