| 제목 |
Coordination between trunk and pelvis showed reduced reciprocity in early PD |
| 소속 |
Korea University Guro Hospital, Department of Rehabilitation Medicine1, Korea University Guro Hospital, neurology2 |
| 저자 |
Woo Sub Kim1†, Seong-Bum Ko2, Hyuk Sung Choi1* |
Background: Coordination in axial segments has relationship with sensory motor integration and gait stability in Parkinson's disease (PD). Although axial impairments increase along to disease duration, elucidating characteristics of axial coordiantion in early PD is clinically significant.
Method: 39 participants with early PD and 18 controls were included. All participants could walk faster than 0.8m/sec. Participants with PD were “drug naïve” and their Hoehn & Yahr stage were from 1 to 3. Participants performed level walking with comfortable speed and 3D motion analysis was conducted. Vector coding technique was used to quantify coordination between trunk and pelvis. Ensemble of coupling angles across walking trials was obtained. Coordination patterns were classified into 4 patterns; pelvis dominant, trunk dominant, in-phase and out-phase according to previous study. Frequencies of 4 coordiantion patterns were compared between PD and control groups.
Results: Age, sex, height, weight, and body mass index did not show statistically significant differences between the PD and control groups. Walking speed, cadence, stride length and step width also did not differ between 2 groups. Out-phase pattern was most frequently observed in PD (39.25%) and controls (47.67%), which showed statistically significant differences between 2 groups (Fig 1) (Table 1). Pelvis dominant pattern also significantly increased in PD (22.83%), compared to controls (16.11%). Trunk and pelvis range of motions are smaller in PD than controls.
Conclusions: PD showed decreased reciprocal movement between trunk and pelvis in transverse plane during level walking. We believe that trunk impairments start at early stage of PD and therapeutic interventions for these coordination changes should be performed for early stage PD.
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Fig 1. coordination difference between PD and controls
Table 1. Comparison of coordination pattern in transverse plane
supple. Vector coding method
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