Increased lactate threshold after five weeks of treadmill aerobic training in rats

Brazilian Journal of Biology

Wh. Brito Vieira¹  Mje. Halsberghe¹  Mlb. Schwantes¹  Sea. Perez¹  V. Baldissera¹  J. Prestes¹  Dl. Farias¹  Na. Parizotto¹ 

关键词: anaerobic threshold;    running speed;    blood lactate;    exercise;    limiar anaeróbio;    velocidade de execução;    lactato sanguíneo;    exercício;   

DOI  :  10.1590/1519-6984.07912

来源: SciELO

【 摘 要 】

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.

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