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Ten-Year-Replicated Circadian Profiles for 36 Physiological, Serological and Urinary Variables in Healthy Men



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  • Description:
    At 3-hr intervals over a 24-hr span, 36 systemic, serologic and urinary variables were examined in 7 men in their mid 20's in the Spring of 1969, and again in the same 7 men in the Spring of 1979 under a similar chronobiologic protocol, using the same chemical and numerical analytical procedures. The variables examined for rhythms by cosinor were: vital signs-blood pressure (systolic, diastolic, pulse pressure and mean arterial pressure), heart rate, intraocular pressure (left and right), oral temperature; serum components-albumin, albumin/globulin ratio, total bilirubin, calcium, carbon dioxide, chlorides, bilirubin, cholesterol, globulin, glucose, potassium, sodium, sodium/potassium ratio, transaminase, triglycerides, total protein, urea nitrogen; and urine components-calcium, calcium/magnesium ratio, creatinine, magnesium, pH, potassium, sodium, sodium/potassium ratio, urea clearance, urea nitrogen, volume and zinc. Although all subjects appeared clinically healthy in 1969 and in 1979, certain inter-study differences were observed in a number of rhythm parameters of different variables. Statistically significant increases in mesor for the group as a whole were observed for serum Ca, cholesterol, Cl, CO2, K, Na, and while statistically significant mesor decreases for a group as a whole were noted in serum glucose and transaminase. Statistically significant increases in amplitude for the group as a whole were observed in serum chloride and urinary Na/K ratio, while statistically signficiant decreases were observed in amplitude for blood pressure, heart rate, serum albumin, A/G ratio, globulin, glucose, protein, sodium and transaminase. For the group as a whole, a statistically significant advance in acrophase was observed in serum transaminase, while a statistically significant delay in acrophase was observed for serum A/G ratio, globulin, glucose, potassium, protein, sodium and for urinary magnesium. Statistically significant by sign test, but not by cosinor, was a numerical mesor increase for urinary urea clearance, a numerical decrease in mesor for urinary zinc; a numerical amplitude decrease for serum cholesterol; and a numerical delay in acrophase for oral temperature and serum cholesterol, CO2, and globulin in all men examined. Only mesor changes in serum cholesterol and urinary Ca/Mg were positively correlated with the change in body size over the 10-year span between studies. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0742-0528
  • Document Type:
  • Funding:
  • Genre:
  • Place as Subject:
  • CIO:
  • Topic:
  • Location:
  • Pages in Document:
    237-284
  • Volume:
    5
  • Issue:
    3
  • NIOSHTIC Number:
    nn:20060178
  • Citation:
    Chronobiol Int 1988 Jul; 5(3):237-284
  • Federal Fiscal Year:
    1988
  • Performing Organization:
    University of Arkansas Med Scis Ltl Rock, Little Rock, Arkansas
  • Peer Reviewed:
    True
  • Start Date:
    19791201
  • Source Full Name:
    Chronobiology International
  • End Date:
    19880301
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:a52187ee3df4b16fc0ce907d9659c15cb646ce02e626dc42a1fbc71a1c30eb69f5117e6ec8612495dda93e7282beceac0f24f61e177a6a3ee4b675f006b07d96
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  • File Type:
    Filetype[PDF - 1.58 MB ]
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