Earticle

초록

영어

The purpose of this study is to suggest a proper tread of stairs using kinematic factors and moments of the lower-limb joints in the stair decent with the 3 different treads with boimechanical method in ergonomics. 9 subjects (body masses; 59.41±74.9, 64.03±6.65, 67.26±7.58, heights; 1600.50±6.35 ages; 31.22±2.99; parity; 1.67±0.71) participated in three experiments that were divided by physiological symptoms (the early (0-15 weeks), middle (16-27 weeks) and last (18-39 weeks). and they walked at self-selected pace on 4 staircases 3 trials. As extending the pregnancy period, cadence was shorter but cycle time were longer more and more. As extending treads of stair decent during pregnancy, speed, stride lengths and cycle time were increased. As extending the treads of stair decent, hip and ankle moments increased but knee moments decreased in sagittal plane. There were increasing or decreasing of moments by means of treads. These changes may account for relation between the treads of stair and moments in pregnant women. The main changes of pregnant women were joint moments and kinematic factors during pregnancy period because pregnancy makes them physical changes. It is possible that joints have connection with compensation each other to maximize stability and to control gait motion. In conclusion, we suggest that the tread of stair is longer than 26cm tread. and exercise programs to improve muscle activity were necessary where joint moments were small.

목차

Abstract
 1. 서론
 2. 연구 방법
  2.1 대상자의 특성
  2.2 실험 절차 및 방법
  2.3 인체 관절점의 좌표화
  2.4 국면 및 이벤트
  2.5 자료 및 통계처리
  2.6 연구의 한계점
 3. 결과 및 논의
  3.1 운동학적 요인 비교
  3.2 하지 관절모멘트 비교
 4. 결론 및 제언
 5. 참고문헌

키워드

저자

• 하종규 [ Chong Ku Hah | 서울여자대학교 자연과학연구소 ]
• 기재석 [ Jae Sug Ki | 인천대학교 정보통신대학원 ] 교신저자
• 장영관 [ Young Kwan Jang | 강원대학교 산업경영학과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한안전경영과학회지 [Journal of Korea Safety Management & Science]

• 간기

  계간

• pISSN

  1229-6783

• eISSN

  2288-1484

• 수록기간

  1999~2025

• 십진분류

  KDC 530 DDC 620