Geneva, Feb. 13 -- International Clinical Trials Registry received information related to the study (ChiCTR2600118232) titled 'A Study on the Impact of Different Bed Head Elevation Angles and Body Positions on Diaphragmatic Excursion Evaluated by Ultrasonography' on Feb. 3.

Study Type: Observational study

Study Design: Sequential

Primary Sponsor: Hebei General Hospital

Condition: None

Intervention: Normal-weight group( BMI between 18-23.9kg/m^2 ):None Overweight group( BMI between 24-27.9kg/m^2 ):None

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-02-15

Target Sample Size: Normal-weight group( BMI between 18-23.9kg/m^2 ):20;Overweight group( BMI between 24-27.9kg/m^2 ):20;Obese group (BMI>28kg/...