Associations of Solid Fuel Use and Circadian Rhythm Syndrome With Physical Function and Muscle Strength in Middle-Aged and Older Adults: Nationwide Cohort Study in China

Haochen Wang   ^{1, 2 *} , MM ;   Pengsen Mou   ^{3, 4 *} , MM ;   Donghao Liu   ^{1 *} , PhD ;   Ze Zhao   ¹ , MM ;   Wenzheng Chen   ¹ , MM ;   Yuxin Yao   ^{3, 4} , MM ;   Haoyan Shi   ¹ , MM ;   Jiaxin Guan   ^{3, 4} , MM ;   Jing Dong   ^{3, 4 *} , PhD ;   Yingliang Wei   ¹ , PhD

¹ Department of Orthopaedics, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China

² Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

³ Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, Shenyang, Liaoning, China

⁴ Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, China

*these authors contributed equally