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  • Title: [Attempt to upset the circadian rhythm of urine excretion of potassium].
    Author: Stepanova SI.
    Journal: Kosm Biol Aviakosm Med; 1976; 10(1):76-86. PubMed ID: 1249914.
    Abstract:
    The paper describes an attempt of shaking (i. e. decreasing inertness) the diurnal rhytnm of urine excretion of potassium in two test subjects under the conditions of 72-hour continuous wakefulness. It is concluded that continuous wakefulness exerts no shaking effect on the diurnal periodicity of the function. It is found that the rate of rearrangement of the diurnal rhythm of urine excretion of potassium after inversion of the diurnal cycle was lowest during sleep and immediately after it. It is emphasized that when evaluating the completeness of inversion of the diurnal rhythm of the function it is important to pay attention to the parameters recorded at night and morning hours.
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