Environmental Ergonomics Laboratory, Department of Ergonomics, Faculty of Design, Kyushu University, 4-9-1 Shiobaru Minami-ku, Fukuoka, Japan.
Eur J Appl Physiol. 2010 May;109(1):73-80. doi: 10.1007/s00421-009-1217-0. Epub 2009 Sep 29.
The purpose of the present study was to examine the discrepancies in rectal temperature (T (re)) at various depths. Nineteen young males performed two bouts of bicycle exercise and recovery. T (re) was simultaneously measured at depth of 4, 6, 8, 10, 13, 16, and 19 cm, alongside the measurement of skin temperatures. We found small but statistically significant differences by depth in the absolute T (re), the magnitude of rise in T (re) and the lag of response in T (re). During the stabilization stage before exercise, T (re) at 4 cm-depth was 0.5 degrees C lower than T (re) at 16 cm-depth (p < 0.05). As the depth measured in the rectum was shallower, the rise in T (re) during exercise was greater. However the rise in T (re) at 10, 13, 16 and 19 cm showed no systemic difference. Among seven depths, T (re) at 16 cm-depth had the most stable feature with the longest latent period (3.1 +/- 1.3 min) and the smallest rise (0.8 +/- 0.3 degrees C), while T (re) at 4 cm-depth was the most responsive to the change of exercise and rest with the shortest latent period (1.0 +/- 0.6 min) and the greatest rise (1.2 +/- 0.5 degrees C). The differences observed in the depths from 4 to 19 cm were offset by exercise to some extent. In summary, T (re) appeared in different manners according to the seven depths during the repetition of exercise and rest, but T (re) deeper than 10 cm-depth seemed to have no systematic differences.
本研究旨在探讨直肠温度（T(re)）在不同深度的差异。19 名年轻男性进行了两次自行车运动和恢复。同时测量了直肠 4、6、8、10、13、16 和 19cm 深处的 T(re)，以及皮肤温度。我们发现，在绝对 T(re)、T(re)升高幅度和 T(re)反应滞后方面，深度存在微小但具有统计学意义的差异。在运动前的稳定阶段，4cm 深处的 T(re)比 16cm 深处低 0.5 摄氏度（p<0.05）。随着直肠测量深度变浅，运动期间 T(re)的升高幅度越大。然而，在 10、13、16 和 19cm 处，T(re)的升高没有系统差异。在这七个深度中，16cm 深处的 T(re)具有最稳定的特征，潜伏期最长（3.1 +/- 1.3 分钟），升高幅度最小（0.8 +/- 0.3 摄氏度），而 4cm 深处的 T(re)对运动和休息的变化最为敏感，潜伏期最短（1.0 +/- 0.6 分钟），升高幅度最大（1.2 +/- 0.5 摄氏度）。4 至 19cm 深度之间的差异在一定程度上被运动所抵消。总之，在重复运动和休息期间，T(re)根据七个深度呈现出不同的方式，但深度超过 10cm 似乎没有系统差异。
