大鼠进行五周跑步机有氧训练后乳酸阈值升高。
Increased lactate threshold after five weeks of treadmill aerobic training in rats.
作者信息
Brito Vieira W H, Halsberghe M J E, Schwantes M L B, Perez S E A, Baldissera V, Prestes J, Farias D L, Parizotto N A
机构信息
Department of Physical Therapy, Federal University of Rio Grande do Norte - UFRN, Natal, RN, Brazil.
Laboratory of Molecular Evolution, Department de Genetics and Evolution, Federal University of São Carlos ? UFSCar, São Carlos, SP, Brazil.
出版信息
Braz J Biol. 2014 May;74(2):444-9. doi: 10.1590/1519-6984.07912.
The aim of the present study was to analyse the lactate threshold (LT) changes in rats submitted to an aerobic treadmill-training programme. Twenty-five Wistar rats were divided into two groups: a sedentary control group (CG), and a trained group (TG) submitted to an aerobic training during 5 weeks. All the animals were submitted to an incremental treadmill exercise test in order to determine LT. There was an increase in the maximum running speed in the TG (from 32.25 ± 1.27 to 47.75 ± 3.13 m.min-1 - p = 0.001), and running speed at LT (from 26.21 ± 1.15 to 35.30 ± 2.24 m.min-1 - p = 0.004), a part from the reduction in blood lactate at LT. LT can be determined in rats, and aerobic training induced positive oxidative physiological adaptations in the animals.
本研究的目的是分析进行有氧跑步机训练计划的大鼠的乳酸阈（LT）变化。25只Wistar大鼠被分为两组：久坐对照组（CG）和在5周内进行有氧训练的训练组（TG）。所有动物都进行了递增式跑步机运动测试以确定乳酸阈。训练组的最大跑步速度有所增加（从32.25±1.27增至47.75±3.13米·分钟-1 - p = 0.001），乳酸阈时的跑步速度也增加了（从26.21±1.15增至35.30±2.24米·分钟-1 - p = 0.004），同时乳酸阈时的血乳酸有所降低。大鼠可以测定乳酸阈，有氧训练可使动物产生积极的氧化生理适应性变化。
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