EKG:

electrocardiogram

ESA:

European Space Agency

EVA:

extravehicular activity


FBRP:

Fundamental Biology Research Program, formerly Gravitational Biology and Ecology (GB&E)

fMRI:

functional magnetic resonance imaging


GB&E:

Gravitational Biology and Ecology, recently renamed the Fundamental Biology Research Program (FBRP)

GH:

growth hormone


HEDS:

Human Exploration and Development of Space (NASA)

HPA:

hypothalamus-pituitary-adrenal

HZE:

high atomic number, high energy


IGF-I:

insulin-like growth factor-I

IPT:

integrated product team

ISS:

International Space Station

ITR:

Integrated Testing Regimen


JSC:

Johnson Space Center (NASA)


LBNP:

lower-body negative pressure

LEO:

low Earth orbit

LET:

linear energy transfer


MARES:

Muscle Atrophy Research and Exercise System

MORD:

Medical Operations Requirements Document

MRI:

magnetic resonance imaging


NASA:

National Aeronautics and Space Administration

NIH:

National Institutes of Health



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