Kobayashi M, Ikegaya H, Takase I, Hatanaka K, Sakurada K, Iwase H
Department of Forensic Medicine, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-0033, Tokyo, Japan.
Forensic Sci Int. 2001 Apr 1;117(3):213-9. doi: 10.1016/s0379-0738(00)00406-0.
There is a hypothesis suggesting that rigor mortis progresses more rapidly in small muscles than in large muscles. We measured rigor mortis as tension determined isometrically in rat musculus erector spinae that had been cut into muscle bundles of various volumes. The muscle volume did not influence either the progress or the resolution of rigor mortis, which contradicts the hypothesis. Differences in pre-rigor load on the muscles influenced the onset and resolution of rigor mortis in a few pairs of samples, but did not influence the time taken for rigor mortis to reach its full extent after death. Moreover, the progress of rigor mortis in this muscle was biphasic; this may reflect the early rigor of red muscle fibres and the late rigor of white muscle fibres.
有一种假说认为，尸僵在小肌肉中比在大肌肉中发展得更快。我们将大鼠竖脊肌切成不同体积的肌束，通过等长测定张力来测量尸僵。肌肉体积既不影响尸僵的发展进程，也不影响其缓解过程，这与该假说相矛盾。在几对样本中，肌肉死前负荷的差异影响了尸僵的起始和缓解，但不影响死后尸僵达到最大程度所需的时间。此外，该肌肉中尸僵的发展是双相的；这可能反映了红色肌纤维的早期尸僵和白色肌纤维的晚期尸僵。
