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.