Relationship between physical function and activities of daily living and the cross-sectional area of erector spinae muscles in patients hospitalized with interstitial lung disease: A two-center retrospective study

• Published in: Journal of respiratory physical therapy Vol. 1; pp. 2 - 13
• Main Authors: 宮原 拓哉, 秋保 光利, 高橋 佑太, 田中 秀輝, 岩田 優助, 今井 亮介, 次富 亮輔, 白石 英晶, 青野 ひろみ, 木村 雅彦
• Format: Journal Article
• Language: Japanese
• Published: Japanese Society of Respiratory Physical Therapy 28.04.2022; 一般社団法人 日本呼吸理学療法学会
• Subjects: ADL能力; 理学療法; 脊柱起立筋群断面積; 間質性肺疾患
• ISSN: 2436-7966
• DOI: 10.51116/kokyurigakuryohogaku.1.0_2

Purpose: The aim of this study was to clarify the relationship between muscle strength, activities of daily living (ADL) and the cross-sectional area of erector spinae muscles (ESMCSA), and also to determine the factors that contribute to the decline in ADL ability after hospitalization in patients diagnosed with ILD.Methods: We identified 55 discharges among patients admitted for ILD underwent physiotherapy and analyzed ESMCSA on computed tomography (CT) from June 2018-May 2020. ESMCSA was measured at the 12th thoracic vertebra on single-slice axial CT. Outcome included initiation/termination date of physiotherapy, laboratory data, treatment agents, and their ADL ability before and after hospitalization using a Barthel index (BI). The subjects were divided into two groups using the median value of ESMCSA corrected by the body surface area (ESMCSA/BSA); the clinical characteristics were then compared. In addition, the correlation between ESMCSA/BSA and physical function and ADL ability was examined.Results: Significantly correlations between physical function and BI and ESMCSA/BSA were determined. Patients with lower levels of ESMCSA/BSA were significantly older and tended to have a lower body mass index at hospitalization. The lower ESMCSA/BSA group did not reveal a statistical significance in BI improvement during hospitalization. In addition, the results of multivariable logistic regression analysis showed that ESMCSA/BSA and steroid pulse therapy were independent risk factors for decreased ADL ability after hospitalization.Conclusion: ESMCSA/BSA is related to muscle strength and ADL ability during hospitalization; additionally, regaining ADL ability was delayed in patients with reduced ESMCSA/BSA.