Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Goswami, N; Lackner, HK; Papousek, I; Jezova, D; Hinghofer-Szalkay, H; Montani, JP.
Rate of cardiovascular recovery to combined or separate orthostatic and mental challenges.
Int J Psychophysiol. 2010; 75(1): 54-62.
Doi: 10.1016/j.ijpsycho.2009.11.005
Web of Science
PubMed
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- Führende Autor*innen der Med Uni Graz
- Goswami Nandu
- Co-Autor*innen der Med Uni Graz
- Hinghofer-Szalkay Helmut
- Lackner Helmut Karl
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- Abstract:
- 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 protocols: HUT, MA and combined MA+HUT, with sessions randomized and 2 weeks apart. Post stress responses were studied in the first 10 min (early; cardiovascular only) and 30 min (late), in 2.5 min epochs. A detailed analysis of early period was done in 30s epochs. Within the first 2.5 min recovery, time courses of heart rate, stroke volume and cardiac output differed significantly, particularly when comparing HUT vs. MA and MA+HUT vs. MA. Additionally, heart rate response differed in HUT vs. MA+HUT. No differences in hemodynamic recovery were seen during the next 2.5 min. Late responses of heart rate and cardiac output showed significantly lower values as compared to baseline, especially for HUT and MA+HUT. Recovery of hemodynamic responses, either due to single or combined stress challenges, showed stressor- and time-dependent patterns. Our data provide useful information regarding why longer recovery periods must be assessed and provide novel insights regarding recovery of physical and mental stressors. This may have clinical implications in the development of cardiovascular diseases such as hypertension or myocardial ischemia.
- Find related publications in this database (using NLM MeSH Indexing)
- Adaptation, Physiological - physiology
- Adult -
- Analysis of Variance -
- Dizziness -
- Habituation, Psychophysiologic - physiology
- Head-Down Tilt - physiology
- Hemodynamics - physiology
- Humans -
- Male -
- Perception - physiology
- Self-Assessment -
- Stress, Physiological - physiology
- Stress, Psychological - physiopathology
- Tilt-Table Test -
- Time Factors -
- Find related publications in this database (Keywords)
- Mental arithmetic
- Head up tilt
- Cardiovascular reactivity
- Blood pressure
- Heart rate
- Sympathovagal balance
- Hypertension