Team3   Social Activity Support / Active Elderly People Research Team

No.1  Research on a safe and effective prevention program using Slow Jogging®

Team Leader:Yoshinari Uehara(Professor of Faculty of Sports and Health Science , Institute for Physical Activity)

Effects of a one-week weight reduction program in which health tourism elements of exercise and dietary intervention were incorporated into college athletes' routines

This study was published in the Japanese Journal of Sports Nutrition, vol. 11, 2018, pp. 16-24.

We conducted a one-week, short-term weight reduction program involving exercise intervention and diet control that limited the menu to low- or high-carb food high in protein, and examined the effects on the athletes' body composition.


The subjects of the study were 11 young, healthy adults (male: 7, female: 4) who belonged to a college sports club and trained five or more days a week. The subjects were randomly assigned to a low-carb diet group (6) or a high-carb diet group (5). The program duration was set to seven days, during which subjects in both groups did a 40-minute slow jogging exercise twice a day in addition to their daily training. Meals were designed based on the health tourism diet control program, prepared by registered dietitians three times a day (ideal body weight × 20kcal/day). The protein intake was set to 1.4 to 1.5 g for every kilogram of body weight, and the percentage of carbohydrates was set to 30% for the low-carb diet group and 50% for the high-carb diet group. Subjects were encouraged to hydrate regularly to prevent dehydration. Furthermore, as the study was also conducted to provide nutrition education to the college athletes who were on a diet, the meals were prepared with mainly ingredients and ready-made food available at convenience stores and 24-hour supermarkets to make it easier for the students to prepare similar meals for themselves.


Through the program, subjects in the low-carb diet group and high-carb diet group were able to reduce their body weight by 1.9 kg and 1.8 kg, respectively, and their lean mass was maintained, as a result of combination of a one-week weight reduction program (their routine) and the health tourism program (unusual for them). A short-term weight reduction program that combines daily exercise and diet control and does not involve dehydration may become an effective way for athletes to improve fitness and performance.