抄録
This study aimed to clarify the process and characteristics of nutrition support provided solely through a messaging application for two female endurance athletes with anemia and menstrual irregularities. Two long-distance runners living in dormitories received continuous nutrition support for approximately five months from a registered and certified Sports Dietitian by the Japan Sports Association. The support was conducted exclusively via LINE, a social networking service that allows text and image exchange. Message frequency and content were analyzed descriptively based on the framework of the Sports Nutrition Management Process. The number of messages peaked during the initial week, corresponding to the assessment phase, and subsequently showed no marked fluctuations over time. Initially, most messages were related to risk management, such as anemia and menstrual issues, but over time, the focus gradually shifted toward health maintenance, disease prevention, and ultimately performance enhancement. These findings suggest that even when conducted solely through messaging, nutrition support can progress in accordance with the athlete’s condition and management goals. Messaging-based nutrition support may serve as an effective alternative for continuous, individualized care when face-to-face interaction is difficult, particularly in an athletic or remote setting.
