- completed
[Biological Rhythms]
The effect of long-term microgravity exposure on cardiac autonomic function by analyzing electrocardiogram
- Human Research
ISS Science for Everyone
SCIENCE OBJECTIVES FOR EVERYONE
The Effect of Long-term Microgravity Exposure on Cardiac Autonomic Function by Analyzing 24-hours Electrocardiogram (Biological Rhythms) examines the effect of long-term microgravity exposure on cardiac autonomic function by analyzing 24-hour electrocardiogram of long-duration ISS crewmembers.
SCIENCE RESULTS FOR EVERYONE
Human hearts ‘heart’ a 24-hour day. Scientists study the effect of long-term microgravity exposure on cardiac function by analyzing 24-hour electrocardiograms (ECG) of space station crew members. Data from two ECG collection periods show that intervals between heart beats remained almost within the 24-hour or circadian range. Circadian rhythm on heart beat intervals in lengthy exposure to microgravity are undergoing analysis to help astronauts recover normal daily rhythms on future prolonged space travel. Any technology that addresses biological rhythm disruption during spaceflight could also promote better health for the general public.
Experiment Description
RESEARCH OVERVIEW
- It has been demonstrated that space flight induces adverse consequences such as cardiovascular deconditioning and sleep disturbance which may be accompanied by disruption in circadian rhythms.
- As those consequences are closely related to autonomic function, cardiac autonomic function may be changed during long- term space flight.
- The objective of this study is to examine the effect of long-term microgravity exposure on cardiac autonomic function by monitoring pre; in; and post-flight 24-hours electrocardiogram.
- The results will be analyzed for improving crew health care technology in long-duration space flight.
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Applications
EARTH APPLICATIONS
As cardiovascular deconditioning and sleep disturbance are major adverse consequences during space flight, those problems can be seen on the earth in the people who are less fit and/or engaged in shift work. The results of this study may contribute to understanding the mechanisms of those consequences and be beneficial to manage those problems.
Publications
PRINCIPAL INVESTIGATOR(S)
MUKAI Chiaki [JAXA]
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