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RISS 인기검색어
- 검색키워드
- 저자 : 현광철(Kwang-Chul Hyun) (검색결과 2 건)
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현광철(Hyun, Kwang-Chul),남기용(Nam, Kee-Yong) 대한생리학회 1967 대한생리학회지 Vol.1 No.2
Circulatory and respiratory activities were observed in men exposed to the environment of engine room of a cruising Republic of Korea Navy ship and compared to the control values obtained in an ordinary laboratory room on land. The environment of an engine room of cruising navy ship was presumed to be a multiple stress acting on men. The environment of the engine room included high temperature (35-42℃), low relative humidity (20-38% saturation), vibration (about 7 cycles per second), rolling and pitching of ship and noises. Sixteen men were divided into two groups consisted of each 8 subjects. Subjects of sea duty group had experience of continuous on board duty averaging 3.5 years. Men of land duty group had no experience of on board activity. On land observations were made on one day prior to the boarding and leaving the port and four days after landing. In between observations in the engine room were made on the first, 5 th, 9 th, 12 th, and 14 th day of on board activity. The whole experimental period lasted for 20 days. Measurements on circulatory and respiratory parameters were at standing resting state (after 30 minutes standing in the case of on land study and 15 minutes in engine room study) and within one minute after cessation of on the spot running of which rhythm was 30/min. and lasted for 5 minutes. Oxygen consumption and pulmonary function test were done in the period of two minutes from the 3rd to 5th minutes of running. The following results were obtained. 1. Body temperature showed no change regardless of group difference or on land or on board measurements. 2. Pulse rate increased markedly after boarding the ship id both groups. Pulse rate increased from the first day on board at rest and after exercise as compared to the on land control value. This increase in pulse rate was more marked after exercise. Sea duty group showed less increase in pulse rate at rest than the land duty group. Standing and resting pulse rate of sea duty group on lam was 81 and increased to 87 at the 5th day on board and remained smaller than the land duty group throughout the period on board. Control standing and resting pulse rate of land duty group on land was 76 and reached 89 at the 9th day on board and thereafter decreased a little. Pulse rate of land duty group at rest on board remained greater than that of sea duty group throughout the period on board. 3. Systolic blood pressure of sea duty group increased after boarding the ship and remained higher than the control value on land. In the land duty group, however, systolic blood pressure decreased during the period on board the ship. Diastolic blood pressure decreased in both groups. 4. Resting breathing rate of land duty group increased and remained higher than the control value on land. In sea duty group, however, resting breathing rate showed a transient increase on the 1st day on board and decreased thereafter to the control value on land and kept the same level throughout the period of cruise. Absolute value of breathing rate in the sea duty group was greater than the land duty group both at rest and after exercise. 5. There was a lowering of breathing efficiency in both groups. Thus, increases in tidal volume and minute ventilation volume and decreases in maximum breathing capacity, vital capacity, capacity ratio and air velocity Index were observed after boarding the ship. An increase in ventilation equivalent was also observed in both groups. The lowering of breathing efficiency was more marked in the land duty group than the sea duty group. 6. Energy expediture increased in both groups during their stay on the ship and was more marked in the sea duty group. 7. Lactate concentration in venous blood at rest and after exercise increased after boarding the ship and no group difference was observed.
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하용찬(Yong-Chan Ha),김상림(Sang-Rim Kim),구경회(Kyung-Hoi Koo),윤택림(Taek-Rim Yoon),김신윤(Shin-Yoon Kim),이봉진(Bong-Jin Lee),현광철(Kwang-Chul Hyun),김연성(Yeon-Sung Kim),황선철(Sun-Chul Hwang),황인환(In-Hwan Hwang),임인(In Im) 대한정형외과학회 2004 대한정형외과학회지 Vol.39 No.2
목적: 2002년 한 해 동안 제주도에 거주하는 만 50세 이상 인구를 대상으로 고관절 주위 골절 발생률에 대한 전향적인 연구를 시행하였다. 대상 및 방법: 고관절 주위 골절로 제주도내의 정형외과 병 의원을 방문한 만 50세 이상의 환자를 대상으로 2002년 1월 1일부터 12월 31일까지 환자들의 의무기록지와 방사선사진을 대상으로 하여, 나이, 성별, 수상원인, 수상시기, 수상부위, 수상 후부터 병원 방문시기와 치료방법, 골다공증의 정도, 동반된 환자의 전신상태에 대하여 파악하였다. 대퇴 경부 및 전자간 골절을 연구대상으로 하였고, 전체 인구 구성 비율 및 제주도내의 인구분포와 사망률에 대한 자료는 통계청으로부터 지원을 받았다. 결과: 고관절 주위골절은 남자 36예(36명), 여자 115예(114명)으로 전체 151예(150명)에서 발생하였고, 50대 이상의 인구에서 고관절 주위골절 발생률은 12.8/10,000명(남 7.3/10,어0명, 여 16.8/10,000명)을 나타내었다. 1985년 50세 이상의 미국 백인 인구에 연령표준화를 하여 골절 발생률을 구한 결과 남자 119/100,000명, 여자 182/100,000명으로 나타났다. 계절별로 분석하면 가을이 50예로 가장 많았고, 봄 40예, 겨울 35예, 여름에 35예 순이었다. 수상 당한 원인은 미끄러짐이 131예로 가장 많았으며, 낙상이 13예, 가벼운 교통사고가 7예였다. 고관절 주위 골절을 당한 환자의 평균 나이는 77.1세 (범위 50-98세)였고, 남자는 68.7세(범위, 50-91세), 여자는 79.7세(범위, 50-98세)였다. 방사선학적인 분류에서 확정된 골다공증(Singh index, Grade Ⅰ-Ⅲ)은 126예, 골다공증이 의심되는(Singh index, Grade Ⅳ-Ⅴ) 예는 25예였다. 결론: 1991년 호남지방에서 50세 이상에서 보고한 10,000명당 3.4명의 고관절 주위 골절에 비해, 2002년에 시행한 저자들의 연구는 12.8/10,000의 발생률을 나타내어 3.8배가 증가하였다. 앞으로 노인인구의 골다공증성 골절의 정확한 유형과 발생률에 대한 파악을 위하여 장기 추시 연구가 필요할 것이라 생각된다. Purpose: This prospective study conducted to estimate incidence of hip fracture among persons over 50 years of age, in Jeju island, Korea during the year 2002. Materials and Methods: Patients over 50 years of age who lived in Jeju island and sustained a femoral neck or intertrochanteric fracture during the year 2002 (from January 1st 2002 to December 31th 2002) were investigated. The information collected from the hospital records for each patient included age, sex, the nature of injury, the day of injury, location, the method of treatment, and the degree of osteoporosis. The population figures were derived from the National Statistical Office. Results: There were 151 fractures of the neck or intertrochanteric region of the femur (36 in men, 115 in women) in population over 50 years of age. The incidence was 12.8/10,000 for total patients (7.3/10,000 for men, 16.8/10,000 for women). The standardized incidence rate against the 1985 U.S. population was 119/100,000 for men and 187/100,000 population for women. The incidence rate showed seasonal variations, being highest in fall. The mean age of patients was 77.1 years (range 50-98 years). The most common cause of injury was a simple fall (131/151, 86.8%). There were 92 (60.9%) fractures of the neck and 59 (39.1%) of the intertrochanteric fracture. One hundred twenty six patients (83.4%) showed definite osteoporosis (Singh index, Grade Ⅰ-Ⅲ). Conclusion: The incidence rate of hip fracture increased 3.8 times in 2002 data (12.8/10,000) in Jeju island when compared with 1991 data (3.4/10,000) in Honam area. To have more accurate trend and estimate of incidence rate of osteoporotic fractures in the elderly, further longitudinal study need to be conducted.
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