Effect of spaceflight on the human body for the astronauts. These joint torques and muscle forces could be used in conjunction with more fundamental computational simulations of bone remodeling and muscle adaptation in order to more completely model the end effects of such countermeasures, and determine whether a proposed exercise regime would be sufficient to sustain astronaut musculoskeletal health. The second effect of weightlessness takes place in human fluids. The body is made up of 60% water, much of it intra-vascular and inter-cellular. Within a few moments of entering a microgravity environment, fluid is immediately re-distributed to the upper body resulting in bulging neck veins, puffy face
Society for the Psychological Study of Social Issues ways, including active engagement in the scientific study of human behavior in critical social situations, sharing the results of that research in scholarly settings, and providing relevant research findings to those engaged in developing public policy. SPSSI members are concerned with both U.S. and international issues, and SPSSI has been affiliated with the United Nations as a Non-Governmental Organization (NGO) since 1987. While SPSSI has focused primarily on U.S. policy in the past, its international membership is constantly growing and international issues have become a larger part of its work. SPSSI writes policy briefs, sponsors advocacy days, and trains its