Abdominal muscle plays a crucial role in postural control and respiration control. However, thickness of abdominal muscle in the paretic side of a hemiplegic patient has not been reported in previous studies. The purpose of this research was to compare lateral abdominal muscle thickness between the nonparetic and paretic side in patients with chronic stroke using rehabilitative ultrasound imaging. Twenty two patients with chronic stroke participated in this study. Absolute thickness of transversus abdominis (TrA), internal oblique (IO) and external oblique (EO) was measured at the end of inspiration and expiration during quiet breathing, and relative thickness was calculated (thickness of each muscle as a percentage of total muscle thickness). Ultrasound imaging was recorded three times and the average value was determined for statistical analysis. Differences in absolute and relative lateral abdominal muscle thickness between the nonparetic and paretic side were assessed with paired t-tests. Absolute muscle thickness of the paretic side TrA was thinner than that of the nonparetic side at the end of inspiration and expiration during quiet breathing. Relative muscle thickness of the paretic side TrA was thinner than the paretic side only at the end of expiration during quiet breathing (p>.05). Therefore, it is necessary to strength TrA in patients with chronic stroke during physical therapy intervention. Further study is needed whether physical therapy intervension will induce TrA thickness in patients with chronic stroke in prospective study design.

만 18세에서 30세 사이의 남녀 102 명 (204안)을 대상으로 자각적굴절검사를 실시하 였다. 자각적굴절검사는 운무법 (fogging method)으로 실시하였으며， 자각적굴절검사 에서 일반적 방법인 편안가림검사와 양안개방검사방법의 한 가지인 편안 +3.00D 운 무검사를 실시하여 결과를 비교 • 분석하였다. 편안운무상태검사와 편안가림상태검사 결과， 둥가구면굴절력차이는 :t O.50D 이하인 경우가 92.16%, :t0.625D 이상인 경우가 7.84%로 나타났으며， 구면도수차이는 :tO.50D 이하인 경우가 94.12%, :t0.75D 이상 인 경우가 5.88%로 나타났다. 난시도수차이는 :tO.50D 이하인 경우가 98.53%, :t0.75D 이 상인 경우는 1.47% 였으며， 난시축차이는 :t 15。이하인 경우가 87.10%, :t 20。이상인 경우가 12.90%로 나타났다. 난시축차이가 둥가구면굴절력 · 구면도수 · 난시도수의 경 우에 비해 큰 것으로 나타났는데， 이는 대부분 -0.25D 난시도수에서 나타났다. 두 검 사의 선호도 비교에서는 비슷하다고 웅답한 경우가 45.1%, 편안가림상태검사가 편하 다고 응답한 경우가 29.41%, 편안운무상태가 편하다고 한 경우가 25.49% 로， 두 검사 법 사이에 유의한 차이가 없었다.