Occurring cyclically about once an hour.
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References in periodicals archive ?
This variability corresponded to one cycle every 4 h or, in the international system of notation, ~39.78 x [10.sup.-4] rad/min or 0.25 cycle/h, after the animal underwent the HFD for 4 weeks, with a different circhoral rhythm to maintain the core and peripheral temperatures on small-range control in mammals (25).
A persistent circhoral ultradian rhythm is identified in human core temperature.