Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation

Healthcare

Yoshifumi Morita¹  Yohei Ito¹  Keitaro Kawai¹  Yoshihito Sakai²  Hideshi Sugiura³  Yoshiji Kato⁴  Kazunori Yamazaki⁵  Tadashi Ito⁶ 

[1] Department of Electrical and Mechanical Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;Department of Orthopedic Surgery, National Center for Geriatrics and Gerontology, Obu 474-8501, Japan;Department of Physical Therapy, Graduate School of Medicine, Nagoya University, Nagoya 461-8673, Japan;Department of Physical Therapy, Nagoya Heisei College of Nursing & Medical Care, Nagoya 464-0850, Japan;School of Health Sciences, Faculty of Clinical Engineering, Fujita Health University, Toyoake 470-1192, Japan;Three-Dimensional Motion Analysis Room, Aichi Prefectural Mikawa Aoitori Medical and Rehabilitation Center for Developmental Disabilities, Okazaki 444-0002, Japan;

关键词: proprioceptive;    postural control;    sagittal imbalance;    muscle spindle;   

DOI  :  10.3390/healthcare9020210

来源: DOAJ

【 摘 要 】

This study aimed to assess differences in somatosensory control strategies between older patients with sagittal imbalance and young adults during postural tasks. The center of pressure displacement in 27 older patients with sagittal imbalance and 27 young adults was determined upon standing blindfolded on a balance board. Vibratory stimulation at 56 to 100 Hz was applied bilaterally to the gastrocnemius and soleus muscles (GS) and lumbar multifidus to evaluate the contributions of proprioceptive signals to postural control. Data of older patients and young adults were compared using the Mann–Whitney U-test or independent sample t-tests. Compared with the young adults, the older patients were significantly more reliant on the GS (p < 0.005) for their postural control and showed a higher relative proprioceptive weighting ratio (RPW) (p = 0.038). The postural strategy adopted by the older patients depended on the level of proprioceptive stimulation applied to the GS, and the postural control strategy of the ankle correlated with RPW. Overall, this study identifies RPW as a novel measure of postural strategy in older patients with sagittal imbalance and provides an understanding of strategies used to maintain balance, which may assist in developing preventative measures to reduce the risk of falls.

【 授权许可】

Unknown