Correlation of diaphragm thickness with pulmonary function test in Parkinson’s disease

doi:10.5662/wjm.v16.i3.115087

Advanced Search

BPG is committed to discovery and dissemination of knowledge

Home / Archive / Volume 16, Issue 3

This Article

(23)

(20)

(0)

(322)

Peer-Review Report of This Article

CrossCheck and Google Search of This Article

Academic Rules and Norms of This Article

Citation of this article

Corresponding Author of This Article

Research Domain of This Article

Article-Type of This Article

Open-Access Policy of This Article

Times Cited Counts in Google of This Article

Journal Information of This Article

Publication Name

World Journal of Methodology

ISSN

2222-0682

Publisher of This Article

Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Prospective Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Methodol. Sep 20, 2026; 16(3): 115087
Published online Sep 20, 2026. doi: 10.5662/wjm.v16.i3.115087

Table 2 Correlation between spirometry and clinical measures with ultrasound in early stage

	Diaphragm thickness during inspiration		Diaphragm thickness during expiration		Diaphragm fractional index
	r	P value	r	P value	r	P value
FVC	-0.107	0.715	0.077	0.793	-0.257	0.376
FVC%	-0.340	0.235	-0.181	0.536	-0.286	0.322
FEV1	-0.184	0.529	0.046	0.877	-0.352	0.217
FEV1%	-0.359	0.208	-0.149	0.612	-0.389	0.169
FEV1/FVC	0.096	0.743	0.248	0.392	-0.165	0.574
PEF	-0.011	0.969	0.186	0.525	-0.454	0.103
PEF%	-0.148	0.613	-0.021	0.943	-0.387	0.172
MMEF	-0.208	0.477	0.157	0.591	-0.564	0.036
MMEF%	-0.396	0.161	-0.232	0.424	-0.360	0.206
pSO₂	-0.535	0.048	-0.422	0.133	-0.241	0.406
mMRC	0.248	0.413	0.123	0.688	0.249	0.411
Age	0.119	0.686	-0.112	0.703	0.329	0.251
Heart rate	-0.231	0.426	0.051	0.863	-0.428	0.127
Disease duration (months)	-0.353	0.215	-0.217	0.457	-0.313	0.276

FVC: Forced vital capacity; FEV1: Forced expiratory volume in the first second; PEF: Peak expiratory flow; MMEF: Maximal-mid expiratory flow; mMRC: Modified medical research council; pSO₂: Peripheral oxygen saturation.

Full Size Table

Citation: Cosgun Z, Afsin E, Kurul R, Aydin Turkoglu S, Kalfaoglu ME, Aktas G. Correlation of diaphragm thickness with pulmonary function test in Parkinson’s disease. World J Methodol 2026; 16(3): 115087
URL: https://www.wjgnet.com/2222-0682/full/v16/i3/115087.htm
DOI: https://dx.doi.org/10.5662/wjm.v16.i3.115087

Cosgun Z, Afsin E, Kurul R, Aydin Turkoglu S, Kalfaoglu ME, Aktas G. Correlation of diaphragm thickness with pulmonary function test in Parkinson’s disease. World J Methodol 2026; 16(3): 115087 [DOI: 10.5662/wjm.v16.i3.115087]

All content on this site: Copyright © 1993-2026 Baishideng Publishing Group Inc, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For all open access content, the relevant licensing terms apply.