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Principal Investigator: Patricia Cowings, Ph.D. NASA ARC Coinvestigators: William Toscano, Ph.D. NASA ARC Ch

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Principal Investigator: Patricia Cowings, Ph.D. NASA ARC Coinvestigators: William Toscano, Ph.D. NASA ARC Ch

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    10. Approach Database analyses and archival. Develop signal analysis and processing software. Test converging indicators methods in operational environments.

    12. Individual Differences in Adaptational Capacity

    13. Individual Differences in Adaptational Capacity Ambulatory physiological data were collected continuously.

    14. Individual Differences in Adaptational Capacity Subjects occupied a small compartment, equipped with bed, video entertainment, laptop computer, toilet facilities and food and beverages.

    15. Individual Differences in Adaptational Capacity Subjects were in video and voice contact with investigators and medical monitors at all times.

    16. Individual Differences in Adaptational Capacity G-tolerance tests were administered before and after each 22 hour habitat test. G-load was increased until subjects experienced reduced peripheral vision and/or pre-syncope.

    17. Individual Differences in Adaptational Capacity Subjects were required to perform a stand test at 4-hour intervals to evaluate their orthostatic tolerance.

    18. Individual Differences in Adaptational Capacity Performance tests and a mood state scale were performed on a laptop computer following each stand test, and symptom reports were obtained verbally.

    19. Stand Tests at 1.0g Heart Rate and Blood Pressure

    20. Stand Tests at 1.25g Heart Rate and Blood Pressure

    21. Blood Pressure and Heart Rate of Subject Q20 During Hyper-g

    22. Cardiac Responses to G-Tolerance Tests

    23. Cardiac Responses During Stand Tests at 1.25g

    25. Converging Indicators for Subject Q23 at Different G-loads

    26. Conclusions Converging indicators can be used to identify individual differences in adaptational capacity (e.g., susceptibility to orthostatic intolerance and motion sickness). Psychomotor performance was significantly degraded during hypergravity. Symptoms generally increased with g-load. Reductions of mood, perceptual or cognitive responses were highly idiosyncratic. Physiological profiles may be used to predict how well individuals adapt and suggest that training control of autonomic responses (i.e., Autogenic-Feedback Training Exercise-AFTE) may help to reduce or eliminate symptoms.

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