AUTHOR=Zhu Huiying , Pan Jianchao , Wen Jianxuan , Dang Xiaojing , Chen Xiankun , Fan Yunxiang , Lu Weihui , Jiang Wei TITLE=Type 2 diabetes mellitus’ impact on heart failure patients’ exercise tolerance: a focus on maximal fat oxidation during exercise JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2025.1485755 DOI=10.3389/fcvm.2025.1485755 ISSN=2297-055X