Changes in the central and peripheral circulatory system in response to the cold: own studies using impedance plethysmography and Doppler ultrasound.
The aim of the study was to determine the cardiovascular response to continuous (4 °C for 60 min) and intermittent (10 min at 4 °C and 10 min at room temperature alternately) exposure to the cold in 30 healthy young men. The subjects were equipped with a set of identical clothing (insulation 2.1 clo) and during the stay in the chamber and outside performed the same activities, i.e., walking on a treadmill at a speed of 0.5 km/h. The tests included assessing the central circulatory system using the Holter system and assessing the peripheral circulatory system using impedance plethysmography and Doppler ultrasound. The analysis of the parameters that describe the central and peripheral circulation poses a difficulty in determining which variant of exposure constitutes a greater load on the circulatory system. It should be noted that even the conditions used in the study may cause adverse effects in the cardiovascular system.
a Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Poland.
Elżbieta
E
Łastowiecka-Moras
b Medical University of Warsaw - Independent Public Central Clinical Hospital , Poland.
Eliza
E
Kozyra-Pydyś
D000328:Adult; D001794:Blood Pressure; D001833:Body Temperature Regulation / Q000502:physiology*; D002320:Cardiovascular Physiological Phenomena; D003080:Cold Temperature / Q000009:adverse effects*; D015716:Electrocardiography, Ambulatory; D006801:Humans; D008297:Male; D010992:Plethysmography, Impedance; D018608:Ultrasonography, Doppler; D055815:Young Adult
Doppler ultrasound; central circulation; cold environment; continuous exposure; impedance plethysmography; intermittent exposure; peripheral blood circulation