The aim of this study was to evaluate the effects of walking on a treadmill while using dynamic functional electrical stimulation (Dynamic FES) on functional ability and gait in chronic stroke patients. This was a prospective, randomized controlled study. Twelve patients with chronic stroke (＞;24 months) who were under grade 3 in dorsiflexor strength with manual muscle test were included and randomized into intervention (Dynamic FES) (n1=7) and control (FES) (n2=5). Both the Dynamic FES group and FES group were given a neuromuscular development treatment. The Dynamic FES group has implemented a total of 60 minutes of exercise treatment and gait training with Dynamic FES application. The FES group, with the addition of applying FES while sitting, has also implemented a total of 90 minutes of gait training on treadmill after the exercise treatment. Both two groups accomplished the program, twice a week, for a total of 24 times in a 12-week period. Exercise treatment, gait training on treadmill, and both Dynamic FES and FES were implemented for 30 minutes each. Korean version activities-specific balance confidence scale (K-ABC) was measured to determine self-efficacy in balance function. Timed up and go (TUG) test was performed to evaluate the physical performance. K-ABC, TUG, Berg balance scale (BBS), modified physical performance test (mPPT) and G-walk were evaluated at baseline and at 12 weeks. After 12 weeks, statistically significant differences (p＜.05) were apparent in the Dynamic FES group in the changes in K-ABC and BBS. mPPT, TUG, gait speed, stride length and stance phase duration (%) were compared with the FES group. K-ABC had higher correlation to BBS, along with mPPT to TUG. Our results suggest that walking with Dynamic FES in chronic stroke patients may be beneficial for improving their balance confidence, functional ability and gait.

진원 연-아연 광상은 영남육괴의 북동부에 위치하며, 주변 지질은 선캠브리아기의 호산리층, 분천화강편마암, 흑운모화강편마암, 홍제사화강암, 우백질화강암과 이들을 관입한 백악기의 산성화산암류 및 시대미상의 암맥류로 구성되어 있다. 광상은 영남육괴의 고기 화강암류인 홍제사화강암 내의 열극을 충진하여 발달한 함 연-아연 열수 석영 맥상 광체들로 구성되어 있으며, 광화작용은 구조운동에 수반되어 총 2회에 걸쳐 진행되었다. 주 광화시기인 광화 I기는 광물들의 산출조직과 공생관계 등에 의하여 2개의 substage (Ia, Ib)로 구분되며, 석영맥 내에 주 광종인 섬아연석(13.1~19.0 mole% FeS)과 방연석에 수반하여 환철석, 유비철석(28.4~30.3 Atomic % As), 자류철석, 자철석, 황동석, 휘은석 등의 활화광물과 활염광물인 miargyrite가 광석광물로서 산출된다. 광화 II기는 광석광물을 수반하지 않은 석영맥의 발달 시기이다. 광석광물의 공생관계와 화학조성 특성 연구결과 등을 종합하여 확인된 광화작용 시의 지화학적 환경은 유활분압 10-7~10-16atm, 산소분압 10-32.8~10-38.5atm 이산화탄소 분압 <10-0.6atm이었다.