Knowledge of low energy availability in biathlon: why coaches need more targeted education. Results from a national, cross-sectional study - Mathisen, T. F.; Sundgot-Borgen, J.; Macnaughton, L.; Rustaden, A. M.; Løkkevik, I. J.; Lundberg, H. E.; Sundgot-Borgen, C. (International Journal of Sports Science & Coaching, 2026)