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This study compares the effects of the Ramadan fast (RF) on body and plasma compositions, hematology, and responses to steady state submaximal exercise in six physically active (A, 35.5+/-1.6 y) and seven sedentary (S, 37.6+/-2.3 y) Kuwaiti men. Subjects were evaluated: 1) 1 wk before RF (pre-RF); 2) 2 wk after the start of RF (mid-RF); 3) at the 4th wk of(More)
The aim of this study was to evaluate the additive protective efficiency of ischemic preconditioning when used in combination with conventional clinically relevant cardioprotective methods of hypothermia or hypothermic cardioplegia during sustained global ischemia. Isolated rat hearts were aorta-perfused with Krebs-Henseleit buffer and were divided into six(More)
The inotropic effects of ionic (amidotriazoate) and nonionic (iohexol) contrast material were compared in isolated rat heart preparations. Left atria exposed to amidotriazoate for 10 mins exhibited a dose dependent depression of contractile force approximately twice as large as that brought about by equiosmolar sucrose. When the driving rate was reduced(More)
The course of recovery of heart activity [assessed by heart rate, atrioventricular (AV) conduction time, monophasic action potentials, contractile force, and perfusion rate] from hypothermic ischemic arrest was studied on isolated perfused rat hearts. The effect of control ischemic arrest was compared with various cardioplegic protective formulations based(More)
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