ArticleEuropean journal of applied physiology2015
Effects of gravitational acceleration on cardiovascular autonomic control in resting humans.
Article in European journal of applied physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Comparison of Autonomic Control of Blood Pressure During Standing and Artificial Gravity Induced via Short-Arm Human Centrifuge.Frontiers in physiology · 2018Article
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Authors and funding
8 authors.
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Abstract
purposePrevious studies of cardiovascular responses in hypergravity suggest increased sympathetic regulation. The analysis of spontaneous heart rate variability (HRV) parameters and spontaneous baroreflex sensitivity (BRS) informs on the reciprocal balance of parasympathetic and sympathetic regulations at rest. This paper was aimed at determining the effects of gravitational acceleration (a g) on HRV and BRS.
methodsEleven healthy subjects (age 26.6 ± 6.1) were studied in a human centrifuge at four a g levels (1, 1.5, 2 and 2.5 g) during 5-min sessions at rest. We evaluated spontaneous variability of R-R interval (RR), and of systolic and diastolic blood pressure (SAP and DAP, respectively), by power spectral analysis, and BRS by the sequence method, using the BRSanalysis(®) software.
resultsAt 2.5 g, compared to 1 g, (1) the total power (P TOT) and the powers of LF and HF components of HRV were lower, while the LF/HF ratio was higher; (2) normalized units for LF and HF did not changed significantly; (3) the P TOT, LF and HF powers of SAP were higher; (4) the P TOT and LF power of DAP were higher; and (5) BRS was decreased.
conclusionsThese results do not agree with the notion of sympathetic up-regulation supported by the increase in HR and DAP (tonic indices), and of SAP and DAP LF powers (oscillatory indices). The P TOT reduction leads to speculate that only the sympathetic branch of the ANS might have been active during elevated a g exposure. The vascular response occurred in a condition of massive baroreceptive unloading.
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