인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록·키워드
We examined the influence of mattress firmness on the spinal curve, sleep quality, and subjective evaluations in healthy subjects. The firmness of the three equal parts of air /mattress was controlled by the air pressure in each part. In Experiment 1, we created nine air mattress conditions by setting the air pressure of each of the upper and middle parts at 4, 6, or 8 kPa, and that of the lower part at 6 kPa. We measured the spinal curves of 10 healthy young male subjects from the coccyx to the 7th cervical vertebra by a fiber optic-based 3D bend and twist sensor, while they laid down on their right side with the angle of the trunk and thigh at 135° (abbreviated as lying135°) and when they laid supine, in each of the nine mattress conditions. We found that the spinal curve during supine position with the conditions of lower part: 6 kPa, middle: 4 kPa, and upper: 6 kPa (“6:4:6”) was the most similar to that during lying135°, which makes the spinal curve natural. However, the subjective evaluation of "comfort of the mattress" by a visual analog scale (VAS) scored highest in the 6:4:8 condition. As Experiment 2, we compared sleep quality achieved with the 6:4:6 and 6:4:8 conditions over each of seven consecutive nights (three adaptation nights and four for analysis) in subjects’ homes. The sleep quality achieved by 20 healthy adult males and females was assessed by means of actigraphy, the standardized Oguri-Shirakawa-Azumi (OSA) Sleep Inventory (middle-aged version), and VAS subjective evaluations. The estimated sleep quality measured on the 6:4:6 mattresses was significantly higher than that on the 6:4:8 mattress. The VAS evaluations of "comfort of the lower back" and "comfort of the upper back" were also higher for the 6:4:6 mattress. There were no significant differences in the OSA scores between mattress conditions. Our results indicate that the 6:4:6 mattress condition, which appeared to provide a natural spinal curve, provided higher sleep quality and higher subjective evaluations during actual use compared to the 6:4:8 condition.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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UCI(KEPA) : I410-ECN-0101-2016-530-002490217
