Differences in cervical sagittal parameters and muscular function among subjects with different cervical spine alignments: a surface electromyography-based cross-sectional study 1Department of Orthopaedic Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 2Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China DOI 10.7717/peerj.18107 Academic Editor Jincheng Wang Subject Areas Bioengineering, Orthopedics, Radiology and...