Postexercise glycogen replenishment in untrained animals

Lamb, D. R.; Ratliff, R. A.; Kochan, R. G.

doi:10.1249/00005768-197500720-00020

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The finding showing exercise training increased muscle glycogen concentration is consistent with the bulk of data supporting that moderate endurance training preserves muscle glycogen (Hickner et al, 1997; Nakatani et al, 1997). One was an early study by Lamb, Ratliff, and Kochan (1975), in which trained and untrained guinea pigs were exercised by means of running for 30 min and muscle glycogen was measured either immediately or 48 h after exercise. Muscle glycogen concentrations were higher in the trained than in the untrained group at 48 h. In the other study, Tan et al (1984) examined muscle glycogen repletion in trained and untrained rats 1 h after a glycogen depleting exercise bout.…”

Section: Discussionmentioning

confidence: 99%

Melatonin administration does not alter muscle glycogen concentration during recovery from exhaustive exercise in rats

Özdemir

Özdem

Özkaya

2011

European Journal of Sport Science

View full text Add to dashboard Cite

The purpose of this study was to investigate the effect of melatonin administration on muscle glycogen concentration during recovery after exhaustive swimming exercise in sedentary and trained rats. Male Wistar rats were assigned to one of four groups: sedentary control (C), sedentary melatonin-injected (M), exercise-trained (T), and trained and melatonin-injected (MT) groups. Exercise-trained groups were subjected to six weeks of swimming exercise. All rats completed an exhaustive swimming exercise. Two daily subcutaneous injections of melatonin at a dose of 3 mg ×kg (1 were given to the rats in the M and MT groups immediately after the exhaustive exercise. Plasma melatonin, glucose and lactate concentrations, and glycogen concentrations of the soleus and epitrochlearis muscle tissues were measured after exhaustive exercise. Plasma lactate concentration was significantly lower in the Tand MT groups than in the C group. Plasma melatonin concentration was higher in the supplemented groups than in the C group. Plasma glucose concentration was significantly higher in the Tand MT groups than in the C group. Both epitrochlearis and soleus muscle glycogen concentrations were higher in the trained groups than in the C group. In conclusion, although exercise training results in improvement in muscle glycogen, exogenous melatonin administration after exhaustive exercise did not restore the glycogen concentrations in fast-or slow-twitch muscle tissues.

show abstract