Method for diagnosis and control of aerobic training in rats based on lactate threshold
| Autor: | Joyce Ferreira Carvalho, Fernando A.M.S. Pompeu, Masako O. Masuda |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
medicine.medical_specialty
Anaerobic Threshold Physical conditioning Physiology Chemistry Lactate threshold Group ii Reproducibility of Results Biochemistry Rats Surgery Age and gender Animal science Physical Conditioning Animal Training intensity Exercise Test Lactates medicine Blood lactate Animals Humans Aerobic exercise Female Rats Wistar Molecular Biology |
| Zdroj: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 140:409-413 |
| ISSN: | 1095-6433 |
| Popis: | We propose a protocol for determination of lactate threshold (LT) and test the validity of one aerobic training based on LT in rats. In group I, V(LTi) (velocity at LT before training) was determined in all rats (n=10), each rat training at its own V(LTi) and in group II, animals (n=7) ran at 15 m min(-1), the mean V(LTi) of group I. The training consisted of daily runs at V(LTi) for 50 min, 5 days/week, for 4 weeks. In group I, this program increased V(LT) (V(LTi) 14.90+/-1.49 m min(-1) and V(LTf), after training, 22.60+/-1.17 m min(-1)) and the velocity at exhaustion (19.50+/-1.63 m min(-1) and 27.60+/-1.17 m min(-1)). [Lactate] at LT (2.62+/-0.43 mmol L(-1) versus 2.11+/-0.15 mmol L(-1)) and relative values of LT (76+/-3% versus 82+/-2%) stayed unaltered. In group II the V(LTf) was 20+/-1.8 m.mim(-1), the [lactate] at the LT, 2.02+/-0.17 mmol.L(-1); the exhaustion speed, 23.57+/-2.11 m.mim(-1) and relative value of LT, 82.71+/-2.29%. There were no significant differences in these parameters between groups I and II. Thus, this protocol based on LT is effective and the mean V(LT) determined in a small number of healthy untrained rats can be used for aerobic training in a larger group of healthy animals of same gender and age. |
| Databáze: | OpenAIRE |
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