Abstract
Running-training on treadmill for 95 days was forced to male rats, and effects of the training were examined on several organs, skeletal muscles, adipose tissues, and fatty acid composition of adipose tissues.
While most of trained rats gained smaller body weight than control rats, 10 to 20% of them gained much more than control rats, and they seemed to be physically more active than the other trained rats.
Development of organs of trained rats has a tendency of being slightly lower than control. In trained rats gaining weight in spite of forced training, however, an enlargement of adrenals was observed in some measure.
Among adipose tissues, subcutaneous fat tissue was affected most markedly by the training: the weight of subcutaneous tissue and lipid content decreased significantly by 95 days training. Decrease of the amount of interscapular brown fat tissue and perirenal fat tissue followed that of subcutaneous fat tissue. A little decrease was seen in epididymal fat tissue, and no change was rved in mesenteric fat tissue. In the active rats which gained weight by training, subcutaneous, epididymal, and mesenteric fat tissues were much heavier than those of control, but lipid content of subcutaneous fat tissue was a little lower.
Fatty acid composition in each adipose tissue was not affected by the long duration running training.
