TY - JOUR
T1 - Organization of functional modularity in sitting balance response and gait performance after stroke
AU - Yamasaki, Hiroshi R.
AU - An, Qi
AU - Kinomoto, Makoto
AU - Takahashi, Koji
AU - Fujii, Takanori
AU - Kogami, Hiroki
AU - Yang, Ningjia
AU - Yamakawa, Hiroshi
AU - Tamura, Yusuke
AU - Itkonen, Matti
AU - Sonoo, Moeka
AU - Alnajjar, Fady S.K.
AU - Yamashita, Atsushi
AU - Otomune, Hironori
AU - Hattori, Noriaki
AU - Asama, Hajime
AU - Miyai, Ichiro
AU - Shimoda, Shingo
N1 - Funding Information:
The authors thank Dr. Fumihiko Hoshi for providing advice that helped us to frame and preface the project. This work was supported by JSPS KAKENHI 18H01405 .
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/7
Y1 - 2019/7
N2 - Background: Recovery of postural adjustment, especially when seated, is important for performing activities of daily living after stroke. However, conventional clinical measures provide little insight into a common strategy for dynamic sitting balance and gait. We aimed to evaluate functional re-organization of posture and ambulatory performance after stroke. Methods: The subjects of the study included 5 healthy men and 21 post-stroke patients. The spatiotemporal modular organization of ground reaction forces during a balance task in which the leg on the non-affected side was lifted off the ground while seated was quantified by using complex principal component analysis. Findings: A 3% decrease in the temporal strength of the primary module in post-stroke patients was an independent predictor of gait performance in the hospital setting with high sensitivity and specificity. Tuning of the temporal strength was accompanied by the recovery of sitting and ambulation. Interpretation: Our findings suggest that evaluation of the modular characteristics of ground reaction forces during a sitting balance task allows us to predict recovery and functional adaptation through daily physical rehabilitation.
AB - Background: Recovery of postural adjustment, especially when seated, is important for performing activities of daily living after stroke. However, conventional clinical measures provide little insight into a common strategy for dynamic sitting balance and gait. We aimed to evaluate functional re-organization of posture and ambulatory performance after stroke. Methods: The subjects of the study included 5 healthy men and 21 post-stroke patients. The spatiotemporal modular organization of ground reaction forces during a balance task in which the leg on the non-affected side was lifted off the ground while seated was quantified by using complex principal component analysis. Findings: A 3% decrease in the temporal strength of the primary module in post-stroke patients was an independent predictor of gait performance in the hospital setting with high sensitivity and specificity. Tuning of the temporal strength was accompanied by the recovery of sitting and ambulation. Interpretation: Our findings suggest that evaluation of the modular characteristics of ground reaction forces during a sitting balance task allows us to predict recovery and functional adaptation through daily physical rehabilitation.
UR - http://www.scopus.com/inward/record.url?scp=85065069811&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065069811&partnerID=8YFLogxK
U2 - 10.1016/j.clinbiomech.2019.04.022
DO - 10.1016/j.clinbiomech.2019.04.022
M3 - Article
C2 - 31075736
AN - SCOPUS:85065069811
SN - 0268-0033
VL - 67
SP - 61
EP - 69
JO - Clinical Biomechanics
JF - Clinical Biomechanics
ER -