[Study of the musculoskeletal system of the spine in humans after long-term space flights by the method of computerized tomography].
By computer tomography, mineral density of lumbar vertebrae and their segments as well as back muscle (++ilio-costal, extensor and ++inter-spinal) density and mass were measured in four Salyut-7 crewmembers before and after extended flights (of 5 and 7 months in duration). These findings are in good agreement with the results of prolonged bed rest studies in which trabecular bone of vertebral bodies was investigated: mineral density diminished only in some (approximately 10%) of the test subjects. At the same time mineral density loss was seen in the vertebral elements where muscles were attached. Also, muscle mass was reduced. It is emphasized that the level of changes was not correlated with flight time. Further investigations in this area are discussed.
Oganov
V S
VS
Cann
C
C
Rakhmanov
A S
AS
Ternovoĭ
S K
SK
D000337:Aerospace Medicine; D015519:Bone Density / Q000502:physiology*; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000502:physiology*; D008297:Male; D009132:Muscles / Q000000981:diagnostic imaging / Q000502:physiology*; D013026:Space Flight; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014586:USSR; D014481:United States
Issledovanie kostno-myshechnogo apparata pozvonochnika u cheloveka posle dlitel'nykh kosmicheskikh poletov metodom komp'iuternoĭ tomografii.