Sternocleidomastoid Muscle Thickness Correlates with Exercise Tolerance in Patients with COPD.

ABSTRACT:

Background

Patients with chronic obstructive pulmonary disease (COPD) have difficulties inhaling as the diaphragm becomes flattened and weakened due to lung hyperinflation. This weakened respiratory function is compensated for by the increased activity of the accessory respiratory muscles, such as the sternocleidomastoid muscle (SCM).

Objectives

This study aimed to evaluate the difference in the SCM thickening fraction (SCM TF) of each respiratory phase (end-expiration, resting inspiration, and end-inspiration), as measured using ultrasonography (US), between patients with COPD and control subjects. We also evaluate the correlation between the SCM TF of each respiratory phase and exercise tolerance in patients with COPD.

Methods

Patients with COPD (n = 44) and age-mat

SUBMITTER: Shiraishi M 

PROVIDER: S-EPMC9843540 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature