Postexercise syncope: Wingate syncope test and effective countermeasure.
Postexercise syncope: Wingate syncope test and effective countermeasure.
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DOI：
10.1113/expphysiol.2013.075333
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发表时间：
2014-01
影响因子：
2.7
通讯作者：
Halliwill JR
中科院分区：
文献类型：
--
作者：
Lacewell AN;Buck TM;Romero SA;Halliwill JR
Altered systemic hemodynamics following exercise can compromise cerebral perfusion and result in syncope. As the Wingate anaerobic test often induces pre-syncope, we hypothesized that a modified Wingate test could form the basis of a novel model for the study of post-exercise syncope and a test-bed for potential countermeasures. Along these lines, breathing through an impedance threshold device has been shown to increase tolerance to hypovolemia, and could prove beneficial in the setting of post-exercise syncope. Therefore, we hypothesized that a modified Wingate test followed by head-up tilt would produce post-exercise syncope, and that breathing through an impedance threshold device (countermeasure) would prevent post-exercise syncope in healthy individuals. Nineteen recreationally active men and women underwent a 60° head-up tilt during recovery from the Wingate test while arterial pressure, heart rate, end-tidal CO2, and cerebral tissue oxygenation were measured on a control and countermeasure day. The duration of tolerable tilt was increased by a median time of 3 min 48 sec with countermeasure compared to control (P < 0.05) and completion of the tilt test increased from 42% to 67% with countermeasure. During the tilt, mean arterial pressure was greater (108.0 ± 4.1 vs.100.4 ± 2.4 mmHg; P < 0.05) with countermeasure compared to control. These data suggest that the Wingate syncope test produces a high incidence of pre-syncope which is sensitive to countermeasures such as inspiratory impedance.
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影响因子：
2.7
作者：
Bailey, Damian M.;Evans, Kevin A.;Pietri, Sylvia
通讯作者：
Pietri, Sylvia
影响因子：
5
作者：
KOHL, HW;BLAIR, SN;KRONENFELD, JJ
通讯作者：
KRONENFELD, JJ
影响因子：
5.8
作者：
Krediet, CTP;Wilde, AAM;Wieling, W
通讯作者：
Wieling, W
影响因子：
37.8
作者：
Krediet, CTP;van Dijk, N;Wieling, W
通讯作者：
Wieling, W
影响因子：
8.8
作者：
Convertino, Victor A.;Ryan, Kathy L.;Lurie, Keith G.
通讯作者：
Lurie, Keith G.