Figueiredo Anelise Ineu, Balbinot Gustavo, Brauner Fabiane Oliveira, Schiavo Aniuska, Baptista Rafael Reimann, Pagnussat Aline Souza, Hollands Kristen, Mestriner Régis Gemerasca
Biomedical Gerontology Program, School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Neuroplasticity and Rehabilitation Research Group (NEUROPLAR), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Front Physiol. 2020 Jun 10;11:540. doi: 10.3389/fphys.2020.00540. eCollection 2020.
Aging-related neuromuscular and neurocognitive decline induces unsmooth movements in daily functional mobility. Here, we used a robust analysis of linear and angular spectral arc length (SPARC) in the single and dual task instrumented timed up-and-go (iTUG) test to compare functional mobility smoothness in fallers and non-fallers aged 85 and older. 64 participants aged 85 and older took part in this case control study. The case group (fallers, = 32) had experienced falls to the ground in the 6 months prior to the assessment. SPARC analyses were conducted in all phases of the single and dual task iTUGs. We also performed correlation mapping to test the relation of socio-demographic and clinical features on SPARC metrics. The magnitude of between-group differences was calculated using D-Cohen effect size (ES). SPARC was able to distinguish fallers during the single iTUG (ES ≈ 4.18). Turning while walking in the iTUG induced pronounced unsmooth movements in the fallers (SPARC ≈ -13; ES = 3.52) and was associated with the ability to maintain balance in the functional reach task. This information is of importance in the study of functional mobility in the oldest-old and to assess the efficacy of fall-prevention programs.
与衰老相关的神经肌肉和神经认知衰退会导致日常功能移动中的动作不顺畅。在此，我们在单任务和双任务仪器化定时起立行走（iTUG）测试中，对线性和角谱弧长（SPARC）进行了稳健分析，以比较85岁及以上跌倒者和非跌倒者的功能移动顺畅度。64名85岁及以上的参与者参与了这项病例对照研究。病例组（跌倒者，n = 32）在评估前6个月内有过跌倒至地面的经历。在单任务和双任务iTUG的所有阶段都进行了SPARC分析。我们还进行了相关性映射，以测试社会人口统计学和临床特征与SPARC指标之间的关系。组间差异的大小使用D-科恩效应量（ES）进行计算。SPARC能够在单任务iTUG期间区分跌倒者（ES≈4.18）。在iTUG中行走时转身会在跌倒者中引起明显的不顺畅动作（SPARC≈ -13；ES = 3.52），并且与在功能性伸展任务中保持平衡的能力相关。这些信息对于研究高龄老人的功能移动以及评估预防跌倒计划的效果具有重要意义。
