Monitoring chronic physical stress using biomarkers, performance protocols and mathematical functions to identify physiological adaptations in rats.
Lab Anim
; 47(1): 36-42, 2013 Jan.
Article
em En
| MEDLINE
| ID: mdl-23467488
ABSTRACT
This study was undertaken to characterize the effects of monotonous training at lactate minimum (LM) intensity on aerobic and anaerobic performances; glycogen concentrations in the soleus muscle, the gastrocnemius muscle and the liver; and creatine kinase (CK), free fatty acids and glucose concentrations in rats. The rats were separated into trained (n = 10), baseline (n = 10) and sedentary (n = 10) groups. The trained group was submitted to the following 60 min/day, 6 day/week and intensity equivalent to LM during the 12-week training period. The training volume was reduced after four weeks according to a sigmoid function. The total CK (U/L) increased in the trained group after 12 weeks (742.0 ± 158.5) in comparison with the baseline (319.6 ± 40.2) and the sedentary (261.6 ± 42.2) groups. Free fatty acids and glycogen stores (liver, soleus muscle and gastrocnemius muscle) increased after 12 weeks of monotonous training but aerobic and anaerobic performances were unchanged in relation to the sedentary group. The monotonous training at LM increased the level of energy substrates, unchanged aerobic performance, reduced anaerobic capacity and increased the serum CK concentration; however, the rats did not achieve the predicted training volume.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estresse Fisiológico
/
Bem-Estar do Animal
/
Adaptação Fisiológica
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Lab Anim
Ano de publicação:
2013
Tipo de documento:
Article