Original Article | |||||
Dementia and Neurocognitive Disorders 2018: 17: 2: 57-65 | |||||
Gait Patterns in Parkinson's Disease with or without Cognitive Impairment | |||||
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Seung Min Kim ,1 Dae Hyun Kim ,2 YoungSoon Yang ,1 Sang Won Ha,1Jeong Ho Han1 | |||||
1Department of Neurology, Veterans Health Service Medical Center, Seoul, Korea 2Department of Physical Medicine and Rehabilitation, Veterans Health Service Medical Center, Seoul, Korea | |||||
Gait Patterns in Parkinson's Disease with or without Cognitive Impairment | |||||
Seung Min Kim ,1 Dae Hyun Kim ,2 YoungSoon Yang ,1 Sang Won Ha,1Jeong Ho Han1 | |||||
1Department of Neurology, Veterans Health Service Medical Center, Seoul, Korea 2Department of Physical Medicine and Rehabilitation, Veterans Health Service Medical Center, Seoul, Korea | |||||
Background and Purpose: Cognitive and gait disturbance are common symptoms in Parkinson's disease (PD). Although the relationship between cognitive impairment and gait dysfunction in PD has been suggested, specific gait patterns according to cognition are not fully demonstrated yet. Therefore, the aim of this study was to investigate gait patterns in PD patients with or without cognitive impairment. Methods: We studied 86 patients at an average of 4.8 years after diagnosis of PD. Cognitive impairment was defined as scoring 1.5 standard deviation below age- and education-specific means on the Korean version of the Mini-Mental State Examination (K-MMSE). Threedimensional gait analysis was conducted for all patients and quantified gait parameters of temporal-spatial data were used. Relationships among cognition, demographic characteristics, clinical features, and gait pattern were evaluated. Results: Cognitive impairment was observed in 41 (47.7%) patients. Compared to patients without cognitive impairment, patients with cognitive impairment displayed reduced gait speed, step length, and stride length. Among K-MMSE subcategories, “registration,” “attention/calculation,” and “visuospatial function” were significantly associated with speed, step length, and stride length. However, age, disease duration, Hoehn-Yahr (HY) stage, or Unified Parkinson's Disease Rating Scale (UPDRS) motor score was not significantly related to any gait analysis parameter. Conclusions: Our present study shows that cognitive impairment is associated with slow and short-stepped gait regardless of HY stage or UPDRS motor score, suggesting that cognitive impairment may serve as a surrogate marker of gait disturbance or fall in PD patients. |
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Key Words: Gait; Parkinson's Disease; Cognitive Impairment | |||||
대한치매학회지 (Dementia and Neurocognitive Disorders) |