Seasonal Variations of Blood and Plasma Volumes in Healthy Men

Paloheimo, J.

doi:10.3109/00365516309051335

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…suggesting that winter values may be much lower than summer values (16). Previous studies on small Finnish groups have indicated that serum cholesterol medians may (30,41) or may not (31,41) be significantly lower in the summer than in the winter.…”

Section: Factors Complicating Interpretationsmentioning

confidence: 92%

Serum Cholesterol and Triglyceride Concentrations of Finns and Finnish Lapps

Aromaa

Björkstén

Eriksson

et al. 1975

Journal of Internal Medicine

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Serum cholesterol and triglyceride (TG) concentrations have been studied in six Finnish population groups in South and East Finland and in one group of Finnish Lapps in North Finland. Altogether I 1 626 Finns, aged 15 or above and 828 Lapps of all ages were studied. Serum cholesterol and TG concentrations of the Lapp children were higher in the age group W than in the age groups 5-9 and 10-14. Mean serum cholesterol of girlsaged 0-9 was higher than that of the boys. The sex and age dependence of mean lipid values in the adults were in several respects similar to those observed in other industrialized populations. The serum cholesterol mean rose with age to reach a maximum in age group 50-59 in men, in age group 60-69 in women. Among the adults, women had lower cholesterol means than men only in age groups 30-39 and 40-49. The serum TG distribution was markedly skewed, and logarithmic transformation brought it closer to normal. Maximal log(TG) values (> 12 hours' fast) were attained by men aged 30-39 and by women aged 60-69. Men had considerably higher TG levels than women in middle-aged groups. Of all the sex and age groups studied, the men aged 30-39 had the most skewed cholesterol frequency distribution. Up to this age variability in men's cholesterol values also increased, as reflected by an increasing S.D. As to women, the cholesterol S.D. increased until the age of 60-69. In all the age groups above 14 years, the variability of TG values was larger in men than in women, but it was not age dependent. 2-752981Arta med. scand. 198

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Section: Factors Complicating Interpretationsmentioning

confidence: 92%

Serum Cholesterol and Triglyceride Concentrations of Finns and Finnish Lapps

Aromaa

Björkstén

Eriksson

et al. 1975

Journal of Internal Medicine

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“…29-31) suggests the possibility of endogenous rhythmic components of seasonal differences in cardiovascular morbidity and mortality; this could be similar in nature, although differing in period, to the circadian temporal organization contributing to nocturnal asthma. Although it has been reported that human serum cholesterol levels vary over the year with a peak during the winter or spring (Antonis et al 1965;Doyle et al 1965;Fyfe et al 1968;Green et al 1963;Paloheimo 1961;Thomas et al 1961;Watanabe and Aoki 1956) Hemisphere, the statistical significance of such changes has been questioned (Rippey 1981). In any event, this seasonal variation does not in itself appear to be sufficient to contribute to the increase in heart and vascular disease during winter in those at risk.…”

Section: Circannual Rhythms and Cardiovascular Morbiditymentioning

confidence: 94%

Aspects of Human Chronopathology

Smolensky¹

1983

Topics in Environmental Physiology and Medicine

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Often in an individual or a group of patients the manifestation of disease or the exacerbation of symptoms is predictable, exhibiting time dependencies (chronopathologies) over 24-hr, 1-month, and 1-year periods. Chronopathology may involve also alterations in the temporal structure of biological functions quantifiable by differences in the period, acrophase, mesor, and/or amplitude, preceding, following, or coincident with a change in health status. While the major emphasis of most investigations has been the substantiation of periodicities in the occurrence of symptoms or morbid events, the study of changes in the body's temporal structure associated with the commencement of illness has yet to be vigorously pursued.

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“…Among circumpolar populations, winter serum lipid levels may be sensitive to heighted thermogenesis. On the contrary, the degree to which high-latitude groups exhibit wintertime increases in serum lipid levels (Hedstrand and Wide, 1973;Hopstock et al, 2013;Keys et al, 1958;Mjøs et al, 1979;Nazir et al, 1999;Paloheimo, 1961;Ulmer et al, 2004) is similar to populations living in temperate zones (Bl€ uher et al, 2001;Chen et al, 2006;Cucu et al, 1991;Donahoo et al, 2000;Kanikowska et al, 2013;MacRury and Hume, 1992;Mustad et al, 1996;Ockene et al, 2004;Rastam et al, 1992;Robinson et al, 1993;Woodhouse et al, 1993). This may lead to a higher rate of cellular turnover of cholesterol and increase the rate of serum lipid utilization (Eisenberg et al, 2010).…”

Section: Seasonal Changes In Blood Lipid Levelsmentioning

confidence: 99%

Lifestyle mediates seasonal changes in metabolic health among the yakut (sakha) of northeastern siberia

Lévy

Leonard

Tarskaia

et al. 2016

American J Hum Biol

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While seasonal changes in anthropometric dimensions were modest, Yakut men and women experienced significant increases in total cholesterol and HDL cholesterol from summer to winter. These results also suggest that while Yakut individuals with greater subsistence participation are more buffered from adverse seasonal changes in cholesterol levels, they may be at a greater risk for winter increases in blood pressure. Furthermore, the interactions between lifestyle and seasonal change in metabolic health appear to differ between Yakut women and men. Am. J. Hum. Biol. 28:868-878, 2016. © 2016Wiley Periodicals, Inc.

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Seasonal Variations of Blood and Plasma Volumes in Healthy Men

Cited by 6 publications

References 21 publications

Serum Cholesterol and Triglyceride Concentrations of Finns and Finnish Lapps

Serum Cholesterol and Triglyceride Concentrations of Finns and Finnish Lapps

Aspects of Human Chronopathology

Lifestyle mediates seasonal changes in metabolic health among the yakut (sakha) of northeastern siberia

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