{"title":"The effect of subjective postural vertical on forward flexed posture in Parkinson's disease","authors":"Makoto Shiraishi , Kyohei Mikami , Hikaru Kamo , Yasuyuki Okuma , Taiji Tsunemi , Kenichi Fujimoto , Tsutomu Kamo , Yuki Yokota , Shigeru Nogawa , Takashi Osada , Morinobu Seki , Hiroshi Nagayama , Taku Hatano , Hideto Nakajima , Keisuke Suzuki , Toshimasa Yamamoto , Yoshihisa Yamano , Nobutaka Hattori , Mutsumi Iijima","doi":"10.1016/j.parkreldis.2024.107102","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>We developed a novel method to measure the angle of subjective postural vertical (SPV) and showed that the SPV may be related to the exacerbation of the forward flexed posture.</div></div><div><h3>Objectives</h3><div>The present study prospectively tested the effects of the subjective postural vertical on the exacerbation of the forward flexion of trunk (FFT) through long-term observation of Parkinson's disease patients.</div></div><div><h3>Methods</h3><div>Evaluation of the posture included measuring FFT, the angle of lateral flexion of trunk, and the angle at the position that the patient subjectively perceived as the vertical position at a stationary upright position immediately after standing up at the time of initial observation, 6 months later, and 1 year later.</div></div><div><h3>Results</h3><div>The SPV angles worsened significantly at 6 months and 1 year compared to the first measurements (9.3 ± 6.7° vs. 10.8 ± 8.2° and 10.6 ± 7.8°, P < 0.05), and the FFT angles worsened significantly at one year compared to the first measurements (11.1 ± 8.1° vs. 12.2 ± 8.8°, P = 0.004). Furthermore, using a hierarchical multiple regression model, the difference in SPV from the first visit to the first half year was considered a factor contributing to annual FFT change (P = 0.002).</div></div><div><h3>Conclusions</h3><div>This longitudinal study of a large number of cases suggested that changes in SPV may precede changes in FFT.</div></div>","PeriodicalId":19970,"journal":{"name":"Parkinsonism & related disorders","volume":"129 ","pages":"Article 107102"},"PeriodicalIF":3.1000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Parkinsonism & related disorders","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1353802024011143","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background
We developed a novel method to measure the angle of subjective postural vertical (SPV) and showed that the SPV may be related to the exacerbation of the forward flexed posture.
Objectives
The present study prospectively tested the effects of the subjective postural vertical on the exacerbation of the forward flexion of trunk (FFT) through long-term observation of Parkinson's disease patients.
Methods
Evaluation of the posture included measuring FFT, the angle of lateral flexion of trunk, and the angle at the position that the patient subjectively perceived as the vertical position at a stationary upright position immediately after standing up at the time of initial observation, 6 months later, and 1 year later.
Results
The SPV angles worsened significantly at 6 months and 1 year compared to the first measurements (9.3 ± 6.7° vs. 10.8 ± 8.2° and 10.6 ± 7.8°, P < 0.05), and the FFT angles worsened significantly at one year compared to the first measurements (11.1 ± 8.1° vs. 12.2 ± 8.8°, P = 0.004). Furthermore, using a hierarchical multiple regression model, the difference in SPV from the first visit to the first half year was considered a factor contributing to annual FFT change (P = 0.002).
Conclusions
This longitudinal study of a large number of cases suggested that changes in SPV may precede changes in FFT.
期刊介绍:
Parkinsonism & Related Disorders publishes the results of basic and clinical research contributing to the understanding, diagnosis and treatment of all neurodegenerative syndromes in which Parkinsonism, Essential Tremor or related movement disorders may be a feature. Regular features will include: Review Articles, Point of View articles, Full-length Articles, Short Communications, Case Reports and Letter to the Editor.