دانلود مقاله ISI انگلیسی شماره 87976
ترجمه فارسی عنوان مقاله

همکاری های عضلانی نشان می دهد استراتژی های هماهنگی عضله تنه در افراد مبتلا به آسیب نخاعی قفسه سینه

عنوان انگلیسی
Muscle synergies reveal impaired trunk muscle coordination strategies in individuals with thoracic spinal cord injury
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
87976 2017 31 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of Electromyography and Kinesiology, Volume 36, October 2017, Pages 40-48

ترجمه کلمات کلیدی
آسیب نخاعی، عضلات تنه تعادل ظریف ترکیبات عضلانی، تقسیم ماتریس غیر منفی،
کلمات کلیدی انگلیسی
Spinal cord injury; Trunk muscles; Postural balance; Muscle synergies; Non-negative matrix factorization;
پیش نمایش مقاله
پیش نمایش مقاله  همکاری های عضلانی نشان می دهد استراتژی های هماهنگی عضله تنه در افراد مبتلا به آسیب نخاعی قفسه سینه

چکیده انگلیسی

Spinal cord injury (SCI) can result in paralysis of trunk muscles, which can affect sitting balance. The objective of this study was to analyze trunk muscle coordination of individuals with thoracic SCI and compare it to able-body individuals. A total of 27 individuals were recruited and subdivided into: (a) high thoracic SCI; (b) low thoracic SCI; and (c) able-body groups. Participants were seated and asked to lean their trunk in eight directions while trunk muscle activity was recorded. Muscle coordination was assessed using the non-negative matrix factorization (NMF) method to extract muscle modules, which are the synergistic trunk muscle activations, and their directional activation patterns. Our results showed that individuals with SCI used less muscle modules, more co-contractions, and less directional tuning, compared to able-bodied people. These results suggest impaired and simplified muscle coordination due to the loss of supraspinal input after SCI. Observed variability in muscle coordination within SCI groups also suggests that other mechanisms such as spasticity and muscle stretch reflexes or individual factors such as experience and training contributed to the postural muscle synergies. Overall, muscle coordination deficits revealed impaired neuromuscular strategies which provide implications for rehabilitation of trunk muscles during sitting balance after SCI.