Supplementary information files for "Opinions and attitudes on genetic testing for personalised nutrition among professional footballers and sports nutritionists"

Supplementary files for article "Opinions and attitudes on genetic testing for personalised nutrition among professional footballers and sports nutritionists"<br><br><b>Objectives</b>: Genetic testing is gaining attention in elite sport, including football, despite limited supporting evidence. This study explores the attitudes of professional footballers and sports nutritionists toward its use for personalised nutrition.<br><b>Design</b>: A cross-sectional, anonymous online survey was conducted to assess participants’ willingness to engage with genetic testing and perceptions of its role in dietary advice.<b>Methods</b>: 81 professional footballers and 54 registered sports nutritionists completed a structured questionnaire. The survey explored openness towards genetic testing, willingness to share results, and views on ethical considerations, including talent identification.<b>Results</b>: Footballers demonstrated greater openness towards genetic testing for personalised nutrition, with many indicating greater willingness if linked to career opportunities. Nutritionists were generally supportive but cautious, reflecting awareness of the current limitations in evidence. Both groups were less open to using genetic information for selection eligibility and talent scouting.<b>Conclusions</b>: Findings highlight the need for greater education around genetic testing among both athletes and practitioners and emphasise the urgency of developing ethical guidelines to safeguard against misuse of genetic information in professional sport.