Wake Ryotaro, Yoshikawa Junichi, Haze Kazuo, Otani Shinichiro, Yoshimura Takayoshi, Toda Iku, Nishimoto Masaki, Kawarabayashi Takahiko, Tanaka Atsushi, Shimada Kenei, Iida Hidetaka, Takeuchi Kazuhide, Yoshiyama Minoru
Department of Internal Medicine and Cardiology, Graduate School of Medicine, Osaka City University, Osaka, Japan.
Environ Health Insights. 2008 Oct 31;1:63-6. doi: 10.4137/ehi.s900.
Acute myocardial infarction (AMI) is a social burden. However, being able to predict AMI could lead to prevention. A previous study showed only the relation between the lunar phase and the occurrence of AMI, but the period it takes for the moon to orbit around the earth and the period of the lunar phase differ. This study investigated the effect of the gravitation of the moon on AMI. Data was comprised of 1369 consecutive patients with first AMI at 5 hospitals from October, 1984 to December, 1997. The universal gravitation of the moon was calculated and compared to the earth onset time of AMI. Universal gravitation of the moon was derived by G*m/d(2) (G: universal gravitation constant, m: the mass of the moon, d: the distance between the center of the moon and the center of the earth). The relationship between m/d(2) and the cases of AMI was determined. There was an increase in cases, when there is a distance of more than 399864 km from the center of the earth to the center of the moon. The gravitation of more than 399864 km was determined to be weaker gravitation. It is confirmed that the number of AMI patients significantly increases at weaker gravitation periods in this multicenter trial. In conclusion, these results suggest that the gravitation of the moon may have an influence on the occurrence of AMI.
急性心肌梗死（AMI）是一种社会负担。然而，能够预测AMI可能会带来预防效果。先前的一项研究仅表明了月相与AMI发生之间的关系，但月球绕地球公转的周期和月相周期是不同的。本研究调查了月球引力对AMI的影响。数据包括1984年10月至1997年12月期间5家医院连续收治的1369例首次发生AMI的患者。计算了月球的万有引力，并与AMI的地球发病时间进行比较。月球的万有引力由G*m/d(2)得出（G：万有引力常数，m：月球质量，d：月球中心与地球中心之间的距离）。确定了m/d(2)与AMI病例之间的关系。当地球中心到月球中心的距离超过399864公里时，病例数会增加。超过399864公里的引力被确定为较弱引力。在这项多中心试验中证实，在引力较弱的时期，AMI患者的数量显著增加。总之，这些结果表明月球引力可能对AMI的发生有影响。
