The present study aimed to investigate rapid weight loss (RWL) and consequent physical and psychological challenges among judo athletes at the national athlete training center in 2017. The following results were obtained. Judo athletes used weight loss methods such as “gradually reduce meal portion,” “skip meals,” “limit water intake,” “wear sweat suit for training,” and “use sauna,” and had physical and mental distress from such unhealthy weight management practices. Information about weight loss was obtained from “colleagues or senior athletes,” “Internet,” and “head coach or coach,” and not experts such as nutritionists or physicians. Thus, athletes are recommended to employ healthy weight control methods based on advice from experts, such as nutritionists and physicians

INTRODUCTION
 SUBJECTS AND METHODS
  Subjects
  Method and data collection
  Data analysis
 RESULTS
  General characteristic of subjects
  Weight loss method
  Physical and mental challenges during weight loss
  Source of information about weight loss
 DISCUSSION
  Weight loss method
  Physical and mental challenges during weight loss
  Source of information about weight loss
 CONCLUSION
 REFERENCES

• Hyun Chul Kim(Department of Medicine & Science, Korean Sport Olympic Committee)
• Yang Rae Kim(Department of physical therapy center of samsungbon hospital)
• Moon Jung Bae(Department of Medicine & Science, Korean Sport Olympic Committee)
• Ki Jun Park(Department of Medicine & Science, Korean Sport Olympic Committee) correspondence