All news from Aviation Medicine & Aerospace Medicine

Astronauts Trained To Handle Medical Emergency In Space

The researcher determined that on Earth, having a medical emergency means calling an ambulance and getting to a nearby hospital as soon as possible. In space, that’s not really an option. For astronauts living on the International Space Station.

Earth is several hours away, and the only way to get back is on a capsule that plunges through the planet’s atmosphere. That’s why astronauts have basic medical training so they can deal with a medical emergency if one arises. The study was published in Space Craft.

Spaceflight Changes Human Species

Careful Spectator readers may recall this writer’s review of “Endurance,” Scott Kelly’s book about his 11 months living on the International Space Station (ISS) zipping around the Earth at 17,000 miles an hour. His journey was part of the $1.5 million NASA Twins Study when medicos compared his physiological changes with his identical twin brother, Mark Kelly, who is a retired NASA astronaut.

Cornell Alumni News magazine interviewed Weill Cornell Medical School Professor Chris Mason about preliminary results of his work on the study plus some reporters’ misinterpretations plus some funny tweets from the subjects that created headlines that space travel “had transformed an astronaut into something other than human.

Aging Process Is Same In Space

Researcher estimated that the aging process is the same in space. If you are asking about the passage of time relativistic effects they are insignificant. When an astronaut spends six months on the ISS, it is six months from our perspective and six months from their perspective.

They would have to stay in space for 140 years to have experienced one less second than on the ground. If you are asking about the phenomena of the body reacting to the ravages of time, well space is a stressful place.

Immune System Health Is Affected In Space Travel

A new study from Wake Forest Institute for Regenerative Medicine (WFIRM) scientists into the health risks of space radiation exposure shows a potentially greater risk than previously thought. For humans to safely travel into deep space to eventually reach Mars, more understanding is needed about the effects of space travel on their health.

Radiation exposure is believed to be one of the most dangerous aspects of traveling to Mars. The average distance to the red planet is 140 million miles, and a roundtrip could take three years. The latest study was published in a “Stem Cells and Microgravity” special issue of the journal Stem Cells and Development.

Manipulation During Rhythmic Arm Movements in Microgravity

Predicting the consequences of one’s own movements can be challenging when confronted with completely novel environmental dynamics, such as microgravity in space. The absence of gravitational force disrupts internal models of the central nervous system (CNS) that have been tuned to the dynamics of a constant 1-environment since birth.

In the context of object manipulation, inadequate internal models produce prediction uncertainty evidenced by increases in the grip force (GF) safety margin that ensures a stable grip during unpredicted load perturbations. This margin decreases with practice in a novel environment. However, it is not clear how the CNS might react to a reduced, but non-zero, gravitational field, and if adaptation to reduced gravity might be beneficial for subsequent microgravity exposure.