Associations between left atrial indices and cardiorespiratory and muscular fitness among physically active military personnel - Lin, Yen-Chen; Liu, Pang-Yen; Tsai, Kun-Zhe; Huang, Wei-Chun; Yu, Wen-Chung; Sui, Xuemei; Lavie, Carl J.; Lin, Gen-Min (Frontiers in Cardiovascular Medicine, 2025)