The effects of +Gz force on the bone mineral density of fighter pilots
Data(s) |
2001
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Resumo |
HYPOTHESIS Bone is a metabolically active tissue which responds to high strain loading. The purpose of this study was to examine the bone response to high +Gz force loading generated during high performance flying. METHODS The bone response to +Gz force loading was monitored in 10 high performance RAAF pilots and 10 gender-, age-, height-, weight-matched control subjects. The pilots were stationed at the RAAF base at Pearce, Western Australia, all completing the 1-yr flight training course. The pilots flew the Pilatus PC-9 aircraft, routinely sustaining between 2.0 and 6.0 +Gz. Bone mineral density (BMD) and bone mineral content (BMC) were measured at baseline and 12 mo, using the Hologic QDR 2000+ bone densitometer. RESULTS After controlling for change in total body weight and fat mass, the pilots experienced a significant increase in BMD and BMC for thoracic spine, pelvis, and total body, in the magnitude of 11.0%, 4.9%, and 3.7%, respectively. However, no significant changes in bone mineral were observed in the pilots lumbar spine, arms or legs. The control group experienced a significant decrease in pelvic BMC, with no other bone mineral changes observed at any site. CONCLUSIONS These findings suggest that site specific BMD is increased in response to high +Gz forces generated during high performance flying in a PC-9. |
Identificador | |
Publicador |
Aerospace Medical Association |
Relação |
http://www.asma.org/journal Naumann, Fiona L., Bennell, KL, & Wark, JD (2001) The effects of +Gz force on the bone mineral density of fighter pilots. Aviation, Space, and Environmental Medicine, 72(3), pp. 177-181. |
Fonte |
Faculty of Health; Institute of Health and Biomedical Innovation; School of Exercise & Nutrition Sciences |
Palavras-Chave | #110000 MEDICAL AND HEALTH SCIENCES #110600 HUMAN MOVEMENT AND SPORTS SCIENCE #110602 Exercise Physiology |
Tipo |
Journal Article |