J 2015

Chronobiological changes in arterial blood pressure in participants of the 5th and 6th Czech Antarctic Scientific Expeditions

BRAT, Kristián, Pavel HOMOLKA, Germaine CORNELISSEN, Zdeněk MERTA, Martin HOMOLKA et. al.

Základní údaje

Originální název

Chronobiological changes in arterial blood pressure in participants of the 5th and 6th Czech Antarctic Scientific Expeditions

Autoři

BRAT, Kristián (703 Slovensko, garant, domácí), Pavel HOMOLKA (203 Česká republika), Germaine CORNELISSEN (840 Spojené státy), Zdeněk MERTA (203 Česká republika, domácí), Martin HOMOLKA (203 Česká republika), Ivan ŘIHÁČEK (203 Česká republika) a Pavel SEVCIK (203 Česká republika)

Vydání

Neuroendocrinology Letters, Stockholm, Maghira & Maas publications, 2015, 0172-780X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30202 Endocrinology and metabolism

Stát vydavatele

Švédsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 0.946

Kód RIV

RIV/00216224:14110/15:00083483

Organizační jednotka

Lékařská fakulta

UT WoS

000351927400013

Klíčová slova anglicky

Antarctica; extreme environment; 24-hour blood pressure monitoring; Halberg cosinor analysis; blood pressure variability; circadian variability

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 3. 2. 2016 09:34, Soňa Böhmová

Anotace

V originále

OBJECTIVE: To evaluate potential changes in arterial blood pressure (ABP) and heart rate (HR) during a 2-month stay in Antarctica, using chronobiological analysis. METHODS: An observational study performed at Mendel research base, Antarctica, during 2011 and 2012. The studied group consisted of 24 participants of the 5th and 6th Czech Antarctic Scientific Expeditions. Three series of 24-hour ABP monitoring were performed, of these two in Antarctica and one in the Czech Republic. Chronobiological analyses of the data were performed (Halberg Chronobiology Center, Minnesota) using population-mean cosinor. The values of MESOR (Midline Estimating Statistic Of Rhythm), double amplitude and the acrophase were obtained for SBP (Systolic Blood Pressure), DBP (Diastolic Blood Pressure) and HR. These rhythm characteristics were compared between the two locations by parameter tests and by the paired t-test. RESULTS: On the average, the MESORs of SBP, DBP and HR were significantly higher in Antarctica than in the Czech Republic, as were the double amplitudes of the 12-hour component of SBP and DBP. High prevalence of CHAT (Circadian Hyper-Amplitude-Tension) was detected in Antarctica (8/24 = 33%); only 2 persons had CHAT in the Czech Republic (chi(2)=3.945, p=0.047). CONCLUSIONS: A prolonged stay in Antarctica clearly affected certain chronobiological parameters of ABP and HR.