To explore adaptive changes of the Zebrafish (
Danio rerio
) to anaerobic exercise training as well as to collect basic
data of molecular mechanisms of adaption to anaerobic exercise training among this fish, we investigated the influences of 4
weeks of anaerobic exercise training on the behavior, morphology, growth, muscle biochemical components and metabolic
enzyme activities of the Zebrafish. Our results indicated that individual’s daily activity level declined after 4 weeks training and
they preferred to swim together more frequently. Both body length and weight gain decreased, allowing the fish to adapt to the
increased locomotion. Similarly, glycogen in muscles increased and exercise endurance also strengthened due to the
enhancement of energy storage. Moreover, although the activity of lactate dehydrogenase (LDH) in muscle has increased, the
activity of citrate synthase (CS) decreased. Taken together, these results suggest that both the ability of anaerobic exercise and
anaerobic metabolism of Zebrafish can in fact be enhanced by training, and the tangible changes that we could measure were
retained, but only for a limited time.
