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Five weeks of intermittent hand exposures to alternating cold and hot stimuli do not modify finger cold-induced vasodilatation response
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Omgivningsfysiologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Centrum för flyg- och rymdfysiologi, SAPC. Division of Environmental Physiology, Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden.ORCID-id: 0000-0002-4590-1326
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Omgivningsfysiologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Centrum för flyg- och rymdfysiologi, SAPC. Division of Environmental Physiology, Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden.ORCID-id: 0000-0003-3470-5175
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Omgivningsfysiologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Centrum för flyg- och rymdfysiologi, SAPC. Division of Environmental Physiology, Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden.ORCID-id: 0000-0001-9738-9320
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Omgivningsfysiologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Centrum för flyg- och rymdfysiologi, SAPC. Division of Environmental Physiology, Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden; Division of Environmental Physiology, Swedish Aerospace Physiology Center, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID-id: 0000-0002-7440-2171
2024 (engelsk)Inngår i: Journal of Thermal Biology, ISSN 0306-4565, E-ISSN 1879-0992, Vol. 125, artikkel-id 104004Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We tested the hypothesis that prolonged intermittent hand exposures to transient contrast thermal stimuli would enhance the finger cold-induced vasodilatation (CIVD) response during localized cooling. Eight healthy men participated in a 5-week regimen, during which they immersed, thrice per week, the non-dominant (EXP) hand in 8° and 43 °C water, sequentially and at 3-min intervals, for a total period of 60 min. The contralateral (i.e., dominant) hand served as the control (CON) hand. Before and after the regimen, subjects conducted two 30-min hand cold (8 °C water) provocation trials, one with the EXP hand and the other with the CON hand. In addition, a flow-mediated dilatation test was performed in the brachial artery of the EXP arm. Regardless of the hand tested, the average finger skin temperature [CON hand: pre-trial = 10.5 (1.2)°C, post-trial = 10.8 (1.3)°C and EXP hand: pre-trial = 10.7 (1.1)°C, post-trial 10.9 (1.1)°C; p = 0.79], and the incidence of CIVD events [CON hand: pre-trial = 1.1 (1.2) events, post-trial = 1.2 (1.1) events and EXP hand: pre-trial = 1.1 (0.8) events, post-trial = 1.1 (0.8) events; p = 0.88] were not affected by the 5-week regimen. The sensation of cold-induced pain was transiently alleviated following the regimen (p = 0.02). The flow-mediated dilatation response of the EXP brachial artery remained unaltered [pre-trial = 5.4 (3.2)%, post-trial = 4.7 (3.6)%; p = 0.51]. Therefore, five weeks of intermittent hand exposures to alternating cold and hot stimuli do not improve finger temperature responsiveness to sustained localized cold.

sted, utgiver, år, opplag, sider
Elsevier BV , 2024. Vol. 125, artikkel-id 104004
Emneord [en]
Acclimation, CIVD, Contrast baths, Habituation, Thermal adaptation, Thermal perception
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Identifikatorer
URN: urn:nbn:se:kth:diva-366721DOI: 10.1016/j.jtherbio.2024.104004ISI: 001349972800001PubMedID: 39488057Scopus ID: 2-s2.0-85207807550OAI: oai:DiVA.org:kth-366721DiVA, id: diva2:1983082
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QC 20250709

Tilgjengelig fra: 2025-07-09 Laget: 2025-07-09 Sist oppdatert: 2025-07-09bibliografisk kontrollert

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Kölegård, RogerNorrbrand, LenaEiken, OlaKeramidas, Michail E.

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