In: European Heart Journal, 2015, vol. 36, no. 44, p. 3043-3049
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In: American Journal of Hypertension, 2006, vol. 19, no. 8, p. 782-787
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In: Cardiovascular Research, 2004, vol. 62, no. 2, p. 345-356
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In: Cardiovascular Research, 2001, vol. 51, no. 4, p. 767-772
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In: Nephrology Dialysis Transplantation, 2007, vol. 22, no. 9, p. 2449-2451
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In: Clinical Nutrition, 2015, vol. 34, no. 5, p. 885–891
Background & aimsAn important consequence of ageing is a tendency for postprandial blood pressure to decline, which can lead to fainting. As a possible countermeasure, we investigated in healthy older adults the impact of drinking water before a breakfast meal on postprandial cardiovascular and autonomic functions.MethodsAfter a stable cardiovascular baseline recording for at least 20 min,...
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In: Physiology & Behavior, 2012, vol. 106, no. 4, p. 569–573
At orthostatic vasovagal syncope there appears to be a sudden decline of sympathetic activity. As mental challenge activates the sympathetic system, we hypothesized that doing mental arithmetic in volunteers driven to the end point of their cardiovascular stability may delay the onset of orthostatic syncope. We investigated this in healthy male subjects. Each subject underwent a head up tilt...
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In: International Journal of Psychophysiology, 2010, vol. 75, no. 1, p. 48-53
Cardiovascular responses to single stressors diminish over time. Interaction of different stressors influencing hemodynamic variables, indicative of stress-induced reactivity and physiological responses are, however, poorly understood. We investigated time course of mental (using mental arithmetic, MA) and orthostatic (using head up tilt, HUT) challenges induced responses in 16 males. Three...
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In: International Journal of Psychophysiology, 2010, vol. 75, no. 1, p. 54-62
Post stress neurovascular responses induced by physical and mental stress are poorly understood. We investigated the time course of cardiovascular and autonomic recovery, induced by orthostatic and mental challenge, using passive head up tilt (HUT) and mental arithmetic (MA), respectively, when applied singly (MA, HUT) or in combination (MA + HUT). Fifteen healthy males participated in three...
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In: Acta Astronautica, 2010, p. -
We assessed hemodynamic responses induced by orthostatic and mental stressors, using passive head up tilt (HUT) and mental arithmetic (MA), respectively. The 15 healthy males underwent three protocols: (1) HUT alone, (2) MA in supine position and (3) MA+HUT, with sessions randomized and ≥2 weeks apart. In relation to baseline, HUT increased heart rate (HR) (+20.4±7.1 bpm; p<0.001),...
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