Abstract
Lately, heart rate variability (HRV) and blood pressure adaptations have been studied in relation to Space Exploration. Most data obtained so far, indicate a decrease in heart rate (HR), mainly explained by a decrease in the low frequency component (LF) of HRV and an increase in the high frequency band (HF), indicating a predominant vagal modulation during space flights. In order to validate our laboratory and in-house analysis software, as potential tools for space life sciences, 14 normal subjects participated in a 2 hours protocol of simulated weightlessness (HDT-6o) in addition to a Mental Stress Maneuver. All cardiac components were collected, and after wavelets analysis, preliminary results show a significant decrease in HR (p=0,0128). The LF/HF ratio shows a clear tendency to decrease, with a comprehensible increase in HF. During Mental Stress, HR was increased, correlating with higher LF, alongside a general decrease in HF. Overall, our preliminary results validate our laboratory, for studies in the field of human space physiology.
Original language | English |
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Title of host publication | Bioengineering (ENBENG), 2015 IEEE 4th Portuguese Meeting on |
Publisher | IEEE |
Number of pages | 3 |
DOIs | |
Publication status | Published - Feb 2015 |
Keywords
- Microgravity
- LF/HF
- Heart rate variability