Abstract
Weight control technique, especially the methodology for weight reduction, have been an important problem to be solved for the athletes of weight-in-system sports. This study was carried out to obtain the reasonable method of the rapid weight reduction by diet and physical training. Ten wrestlers, whose body weight should be reduced about 10% in a short period of time, were served as subjects. Some blood and urine components were analyzed, and physical and nutritional measurement were performed. Following results were obtained from these data. For the rapid weight reduction in 7 days, body weight, lean body mass and body fat mass decreaed 5.55kg (8.5%), 4.56kg (7.7%) and 1.00kg (15.4%) . The physical work capacites in endurance run (1500m), muscle strength and maximal power during knee extension were not affected by weight reduction. Excretion of urinary nitrogen and 3-methylehistidine did not change during reduction period. Hemogrobin, hematocrit and MCHC were not affected, but total plasma protein was reduced. Free fatty acid was significantly elevated. The results suggest that the rapid weight reduction using a combination of exercise and diet induces to increase fat utilization and to decrease protein utilization.
