The purpose of the present study was to investigate the influence of training on the metabolism of plasma free fatty acid (FFA), and fatty acid (FA) composition of plasma FFA and adipose tissue triglyceride (TG). The results are summarized as follows: 1) There were no significant differences between pre- and post-training values in the total plasma FFA. 2) Among the individual FFA at rest, the percentage of saturated FA increased and unsaturated FA decreased as a result of physical training. 3) Comparing trained group with untrained group, similar differences were observed in FA composition of plasma FFA and the adipose tissue TG. There were higher percentage of saturated FA and lower percentage of unsaturated FA in the trained group. The above resluts suggested that FA pattern and FA metabolism of plasma and adipose tissue are changed under the influence of physical training.