Astronauts spend a few months at the International Space Station, after returning to Earth, the size and density of the muscles of the trunk muscles are reduced. spine. The magazine is published in Wolters Kluwer's Lippincott portfolio.
In the composition of muscle, some changes still appear after four-year long space flows, according to the new Katelyn Burkhart, MS, Massachusetts Institute of Technology and new colleagues. They write, "The changes in space volume caused by paraspinal muscular morphology helps in back pain commonly reported to astronauts."
Trunk Muscles Show Lower Field, Increase in Fatty Tissues, After Space Months
The researchers shook 17 astronauts and cosmonauts and conducted guided missions at the International Space Station. The scans obtained before and after the missions were studied to determine the size and composition of the paraspinal muscles. The average time of space was six months.
The spinal and spinal complexion of the body are a key role in the spinal and behavioral spinal muscles. Early studies have found a reduced muscle paraspinal space in space for a long time, and muscle atrophy can occur without resistance to gravity.
The CT evolution has shown a reduction in the size of the muscle muscles after spatial fluid. In individual muscles, muscle size decreased by 4.6% and 8.8%. One year later, in follow-up scans, the size was usually at least muscles.
Scanings have significantly increased the amount of fatty tissue in the paraspinal. As a result, astronauts' muscle density, since the downward trend in content has dropped from 5.9% to 8.8%. In most muscles, the composition became normal for one year.
However, both muscles – quadratus lumborum and psoas muscles – fat content pre-flight values above even after returning to space for two to four years. These muscles, which connect the spinal column to the pelvis, are located adjacent to the spinal column. Conversely, backbone muscles behind (behind) spinal columns recover normal size and density.
Muscle size and composition variations were changed among individuals. For some muscles, size changes were partly related to the amount and type of astronauts that were gravitated to zero gravity: resistance exercise or cycling. In the flight exercise it does not appear to cause changes in muscle density.
Preliminary studies by astronauts have linked space flow to muscle atrophy, especially muscles that maintain anguish and severity. Many astronauts accelerate back pain during space missions and endanger the spinal disc hernia.
Calculate the first size of the new study and measure the density of muscles in the muscles of the deck. The results show that the size of the muscle is returned to Earth Recovery, but some changes in muscular composition may, in particular, increase large fat infiltrations in at least a few years.
Some changes in the muscles of the paraspinal seem to cause physical exercise, suggesting approaches to preventing adverse effects of nearby immediate space. Mrs. Burkhart and coalition concluded that "NASA expects future missions and Mars projects to be used to drive future counterramons to reduce corruption muscle morphology and associated functional deficits."