Annual Volume and Distribution of Physical Training in Norwegian Female Cross-Country Skiers and Biathletes: A Comparison Between Sports, Competition Levels, and Age Categories-The FENDURA Project. - Osborne JO; Solli GS; Engseth TP; Welde B; Morseth B; Noordhof DA; Sandbakk Ø; Andersson EP (International journal of sports physiology and performance, 2023)