@inproceedings{oai:jaxa.repo.nii.ac.jp:00013110, author = {西村, 直記 and 岩瀬, 敏 and 菅屋, 潤壹 and 高田, 真澄 and 西村, るみ子 and 今井, 美香 and Nishimura, Naoki and Iwase, Satoshi and Sugenoya, Junichi and Takada, Masumi and Nishimura, Rumiko and Imai, Mika}, book = {宇宙利用シンポジウム: 第27回: 平成22年度, Space Utilization Research, Vol. 27 2011: Proceedings of The Twenty-seventh Space Utilization Symposium}, month = {Mar}, note = {第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県, The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Centrifuge-induced artificial gravity has been employed for countermeasures to spaceflight deconditioning including bone metabolism deconditioning and orthostatic intolerance. Each subject was placed on the centrifuge such that 1.0 G was applied to the heart and approximately 2.7 G at the feet. Such a gravity inclination between heart and feet induces to inequality of the blood distribution. We investigated the influence of the inequality of the blood distribution caused by artificial gravity on cardiac hemodynamics and gravity tolerance. Thirteen healthy subjects (9 male and 4 female) participated in this study. Each subject was exposed to the short radius centrifuge of 1.0 G at the heart level for 10 min, and 20 min was exposed to several subjects. Centrifuge runs were terminated when the subjects request. Five male and three female completed the 10 min centrifugation successfully, and 2 male and a female nearly completed. On the other hand, 2 male were terminated prematurely due to to presyncope. In two subjects whom were observed to presyncopy caused by centrifugation, heart rate was acutely decreased approximately 30 to 40 beats. In addition, the increase of heart rate at beginning centrifuge was larger compared with other subjects. Therefore, the change of heart rate during artificial gravity might be useful as the index of the gravity tolerance., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0065129050}, pages = {135--137}, publisher = {宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS), Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)}, title = {人工重力負荷中の体液分布と心拍変動}, volume = {27}, year = {2011} }