The effect of long-term microgravity exposure on cardiac autonomic function by analyzing 48-hours electrocardiogram (Biological Rhythms 48hrs) - 08.27.15

Overview | Description | Applications | Operations | Results | Publications | Imagery

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Science Objectives for Everyone
Biological Rhythms 48 hours studies the effects of long-term microgravity exposure on heart function by analyzing an astronaut’s electrocardiogram for 48 hours. While space station keeps Houston time, it remains unknown whether a separate biological rhythm is imposed on long-term flight crews. To study this astronauts wear an Actiwatch sleep monitor for 96 hours and a Holter electrocardiograph for 48 hours in the middle of that sequence.
 
Science Results for Everyone
Information Pending

The following content was provided by Chiaki Mukai, M.D., Ph.D., and is maintained in a database by the ISS Program Science Office.
Information provided courtesy of the Japan Aerospace and Exploration Agency (JAXA).
Experiment Details

OpNom:

Principal Investigator(s)
Chiaki Mukai, M.D., Ph.D., Japan Aerospace Exploration Agency, Tsukuba, Japan

Co-Investigator(s)/Collaborator(s)
Hiroshi Ohshima, M.D., Ph.D., Japan Aerospace and Exploration Agency, Ibaraki, Japan
Shin Yamada, M.D., Ph.D., Japan Aerospace Exploration Agency, Tsukuba, Japan
Tatsuya Aiba, Tsukuba Space Center, Ibaraki, Japan
Ichiro Tayama, Chiyoda Advanced Solutions Corporations , Yokohama, Japan
Satoru Ishida, Tsukuba Space Center, Ibaraki, Japan
Naomune Yamamoto, Tokyo Women's Medical University, Japan
Yasushi Mizuno, JAXA, Japan

Developer(s)
Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan

Sponsoring Space Agency
Japan Aerospace Exploration Agency (JAXA)

Sponsoring Organization
Japan Aerospace Exploration Agency

Research Benefits
Information Pending

ISS Expedition Duration 1
May 2012 - September 2016

Expeditions Assigned
31/32,33/34,35/36,37/38,39/40,41/42,43/44,45/46,47/48

Previous ISS Missions
We conducted continuous 24-hour RR intervals measurement in ten crews for preliminary data of this project. The preliminary data showed various changes on biological rhythms and some biological rhythm of crews showed prolonged for 24hours or more than those before and after flight.

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Experiment Description

Research Overview

  • To clarify the change of an accurate biological clock from space circumstance.


  • We will evaluate continuous 48-hour RR intervals measurement on Holter ECG ,and sleep/wake rhythm on actiwatch for 96-hour.


  • This research will be analyzed for improving the health care technology of long duration astronauts, for checking out the difference of them between before and after the flight on the earth and during long-duration space flight.

Description
Information Pending

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Applications

Space Applications
Monitoring cardio autonomic functions is important for improving crew health technology during long-duration space flight. 

Earth Applications
The crew health care technology for the biological rhythm disruption during space flight provides general public with useful hint to promote healthy daily lifestyle. 

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Operations

Operational Requirements
Information Pending

Operational Protocols
Information Pending

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Results/More Information

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Related Websites

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Imagery

image Holter ECG. Image courtesy of JAXA.
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