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首页> 外文期刊>Journal of Sports Medicine >Stimulus Level during Endurance Training: Effects on Lactate Kinetics in Untrained Men
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Stimulus Level during Endurance Training: Effects on Lactate Kinetics in Untrained Men

机译：耐力训练过程中的刺激水平：对未经训练的男人乳酸动力学的影响。

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Background/Objective. Not only but particularly due to their time efficiency, High-Intensity Interval Training (HIIT) is becoming increasingly popular in fitness-oriented endurance sports. The purpose of this study was to determine the effect of a HIIT running program versus a Moderate Intensity Continuous Exercise (MICE) training running program (16 weeks each) on lactate kinetics in untrained males. Methods. 65 healthy but untrained males (30-50 years, BMI 27.2 ± 3.7kg/m2) were randomly assigned to either an HIIT (n=33) or a waiting-control/MICE group (n=32). HIIT consisted of intervals and intense continuous running bouts at or above the individual anaerobic threshold (IANS, 95-110% of IANS-HR), while MICE focused on continuous running at 70-82.5% IANS-HR. Both programs were adjusted for “total workload”. Study endpoints were time to IANS and time from IANS till “time to exhaustion” (TTE) as assessed by stepwise treadmill test. Results. In both exercise groups time to reach IANS (MICE 320 ± 160 s versus HIIT 198 ± 118 s) increased significantly (p<.001), with the groups differing significantly (p<.001). Time from IANS until TTE was prolonged significantly among the HIIT group (27 ± 66s, p=.030), while among the MICE group a significant reduction of time from IANS until TTE (59 ± 109s; p=.017) was determined. Between-group difference is significant (p=.003) for this parameter. In both groups TTE increased significantly (HIIT 27.2 ± 17.7% versus MICE 29.0 ± 19.4%, both p<.001) at a similar level (p=.279). Conclusion. HIIT and MICE protocols, when adjusted for total workload, similarly increased running performance in untrained male subjects; however, the underlying mechanisms differ fundamentally. Due to its effects on aerobic and anaerobic performance improvement, HIIT can be recommended for untrained individuals as a time-efficient alternative or complementary training method to MICE. However, our protocol did not confirm the general superiority of HIIT versus MICE on the key endurance parameter “time to exhaustion” that has been reported by other comparative exercise studies.
机译：背景/目标。高强度间歇训练（HIIT）不仅特别是由于其时间效率，在面向健身的耐力运动中也越来越受欢迎。这项研究的目的是确定HIIT跑步计划与中等强度连续锻炼（MICE）训练跑步计划（每个16周）对未经训练的男性乳酸动力学的影响。方法。 65名健康但未经训练的男性（30-50岁，BMI 27.2±3.7kg / m2）被随机分为HIIT组（n = 33）或等待对照组/ MICE组（n = 32）。 HIIT由间隔和剧烈连续奔跑组成，间歇奔跑达到或高于单个无氧阈值（IANS，占IANS-HR的95-110％），而MICE专注于以70-82.5％的IANS-HR进行连续奔跑。两个计划都针对“总工作量”进行了调整。研究终点是通过逐步跑步机测试评估的到达IANS的时间和从IANS到“力竭的时间”（TTE）的时间。结果。在两个运动组中，达到IANS的时间（MICE 320±160 s与HIIT 198±118 s）均显着增加（p <.001），各组差异显着（p <.001）。 HIIT组中从IANS到TTE的时间显着延长（27±66s，p = .030），而在MICE组中，从IANS到TTE的时间显着减少（59±109s; p = .017）。对于此参数，组间差异很明显（p = .003）。在两组中，TTE均以相似的水平显着增加（HIIT 27.2±17.7％，而MICE 29.0±19.4％，均p <.001）（p = .279）。结论。 HIIT和MICE协议在针对总工作量进行调整后，同样可以提高未经训练的男性受试者的跑步表现;但是，基本机制从根本上有所不同。由于HIIT对有氧和无氧运动性能的改善，因此可以将HIIT建议作为未经培训的个人使用，作为MICE的省时替代或补充训练方法。然而，我们的方案并未证实HIIT与MICE在关键耐力参数“力竭时间”上的一般优势，该优势已由其他比较运动研究报告。

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