Spinal bone mineral after 5 weeks of bed rest.
Calcif Tissue Int
; 41(5): 259-61, 1987 Nov.
Article
en En
| MEDLINE
| ID: mdl-3121150
Patients put at bedrest for medical reasons lose 1-2% of spinal bone mineral per week. Losses of this magnitude during even short-term space flights of a few months would pose a serious limitation and require countermeasures. The spinal bone mineral (L2-L4) was determined in 6 healthy males (precision = 2%) before and after 5 weeks of complete bed rest. Only one individual had a significant loss (3%) and the -0.9% mean change for the 6, was not significant (P = 0.06). The average negative calcium balance during the 5 weeks was 4 g or 0.36% of total body calcium, similar to that reported in other bed-rest studies. Spinal bone loss, however, in healthy bed-rested males is significantly less than reported for bed-rested patients, suggesting that a large loss of spinal bone mineral does not occur during space flight missions lasting 5 weeks or less.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Columna Vertebral
/
Reposo en Cama
/
Huesos
/
Calcio
/
Minerales
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Calcif Tissue Int
Año:
1987
Tipo del documento:
Article
Pais de publicación:
Estados Unidos