Increased post-immersion afterdrop following B-adrenergic blockade

Authors

Annerieke Zeyl, University of Wollongong
Cassandra Haley, University of Wollongong
Pornkamon Thoicharoen, University of Wollongong
Laura Welschen, University of Wollongong
Nicole Sinnema, University of Wollongong
Nigel A. S Taylor, University of WollongongFollow
Arthur Jenkins, University of WollongongFollow

RIS ID

7543

Publication Details

Zeyl, A., Haley, C., Thoicharoen, P., Welschen, L., Sinnema, N., Taylor, N. & Jenkins, A. Increased post-immersion afterdrop following B-adrenergic blockade. Environmental Ergonomics X, Papers from the 10th International Conference on Environmental Ergonomics (ICEE 2002), 23-27 September 2002 (pp. 49-50). Fukuoka, Japan: ICEE.

Abstract

It is well established that, during the initial rewarming from mild hypothermia, core temperature continues to decrease before returning towards its pre-immersion state (I). This phenomenon is known as the afterdrop, and has been ascribed to circulatory changes at the periphery, as well as to continued core-to-periphery thermal conduction, both of which may account for continued central-body heat loss after removal from the cold (2,3,4). In a recent series of experiments, in which we studied interactions between cold-water immersion, B-adrenergic blockade, plasma leptin concentration, rewarming and skin blood flow control, we also investigated the afterdrop. Our observations have revealed that altered post-immersion metabolism can also contribute to the afterdrop phenomenon.