건강한 노인과 파킨슨 환자의 정적 기립 자세에서 압력중심 궤적에 대한 정위검사 및 탈경향 변동분석

국문 초록 (Abstract)

본 연구는 압력중심(COP) 좌표를 이용하여 파킨슨 병 환자와 건강한 노인들의 정적기립 균형능력을 비교하고자 하였다. 파킨슨병 환자와 건강한 노인 각 13명이 4가지 검사 조건(딱딱한 바닥에서 눈을 뜨고 1, 눈을 감고 2, 균형패드 위 눈 뜨고 3, 균형패드 위 눈 감고 4)에서 정적기립 시 COP 좌표를 수집, 분석하여 전후(Rx), 내외(Ry)방향의 COP 동요, COP 총 이동거리(L), COP 동요면적(A), 탈경향 변동분석(DFA)을 통한 변동척도(α)를 계산하였다. 1~3번 조건에서 Rx, Ry, L, A는 모두 파킨슨 환자가 유의하게 큰 값을 보였다. 반면 균형패드 위에서는 시각 정보가 정상일 때는 파킨슨 환자의 내외 방향 α가 건강한 노인보다 컸고, 시각정보가 차단되었을 때는 파킨슨 환자의 전후 방향 α가 유의하게 낮은 값을 보였다. DFA 결과가 고유 수용성감각이 교란된 균형패드 위에서만 각 방향에서 집단 간 서로 다른 양상을 보인 것으로 미루어 파킨슨 병 환자는 일반 노인들과는 다른 고유수용성감각 통합의 기능의 변화가 있는 것으로 해석된다. 이러한 결과는 임상에서 노인군 균형능력 저하의 원인을 감별하는데 유용할 것으로 사료된다. 다만, 본 연구의 결과를 일반화하기 위해서는 더 많은 표본을 대상으로 한 연구가 추가되어야 할 것이다.

다국어 초록 (Multilingual Abstract)

The purpose of this study is to find quantitative scaling properties of the center of pressure(COP) trajectory by comparison between healthy and Parkinsonian people. Thirteen people with Parkinson’s disease (PD) and thirteen healthy elderly (HE) have participated in this study. Subjects were asked to stand quietly on a pressure mat with four different conditions – 1) eye open, 2) eye closed, 3) eye open on a balance pad, and 4) eye closed on a balance pad. The COP movements were recorded and analyzed for those conditions. Sway range in anterior-posterior (Rx) and medio-lateral (Ry) directions, a total length of the trajectory (L), and sway area (A) as well as scaling exponents (α) from DFA were calculated from measured data. All temporal behaviors of the COP (Rx, Ry, L, and A) from the PD were significantly larger than those of the HE in conditions 1, 2, 3. However, the PD showed different characteristics of α from those of the HE when the proprioception was distorted on the foam floor. The DFA scaling exponent might inform that the PD has differences to integrate proprioceptive signals than healthy elderly.

목차 (Table of Contents)

• 요약
• ABSTRACT
• 1. 서론
• 2. 연구방법
• 3. 결과
• 4. 고찰
• 5. 결론
• REFERENCES

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