Geometric indices of hip bone strength in overweight and control elderly men
LMJ-Lebanese Medical Journal. 2014; 62 (3): 150-155
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| IMEMR
| ID: emr-196863
Biblioteca responsable:
EMRO
Aim of the study: The aim of this study was to compare geometric indices of hip bone strength in overweight and control elderly men
Methods and results: This study included 16 over- weight [Body mass index [BMI] > 25 kg/m2] elderly men [aged 65-84 years] and 38 age-matched controls [BMI < 25 kg/m2]. Body composition and bone miner- al density [BMD] were assessed by dual-energy X-ray absorptiometry [DXA]. To evaluate hip bone geometry, DXA scans were analyzed at the femoral neck, the intertrochanteric region, and the femoral shaft by the Hip Structure Analysis [HSA] program. Cross sectional area [CSA], an index of axial compression strength, section modulus [Z], an index of bending strength, cross sectional moment of inertia [CSMI], an index of structural rigidity, cortical thickness [CT] and buckling ratio [BR] were measured from bone mass profiles. Lean mass, body weight, fat mass and BMI were higher in overweight men compared to controls [p < 0.001]. CSA and Z were higher in overweight subjects compared to controls [p < 0.05] at the three regions [femoral neck, intertrochanteric and femoral shaft]. After adjustment for age, CSA and Z of the intertrochanteric region and the femoral shaft remained significantly higher in overweight men compared to controls [p < 0.05]. After adjustment for either body weight, BMI or lean mass, there were no differences between the two groups [overweight and controls] regarding the HSA variables [CSA, CSMI, Z, CT and BR] of the three regions
Conclusion: This study suggests that overweight elderly men have greater indices of bone axial and bending strength in comparison to controls at the intertrochanteric and the femoral shaft
Methods and results: This study included 16 over- weight [Body mass index [BMI] > 25 kg/m2] elderly men [aged 65-84 years] and 38 age-matched controls [BMI < 25 kg/m2]. Body composition and bone miner- al density [BMD] were assessed by dual-energy X-ray absorptiometry [DXA]. To evaluate hip bone geometry, DXA scans were analyzed at the femoral neck, the intertrochanteric region, and the femoral shaft by the Hip Structure Analysis [HSA] program. Cross sectional area [CSA], an index of axial compression strength, section modulus [Z], an index of bending strength, cross sectional moment of inertia [CSMI], an index of structural rigidity, cortical thickness [CT] and buckling ratio [BR] were measured from bone mass profiles. Lean mass, body weight, fat mass and BMI were higher in overweight men compared to controls [p < 0.001]. CSA and Z were higher in overweight subjects compared to controls [p < 0.05] at the three regions [femoral neck, intertrochanteric and femoral shaft]. After adjustment for age, CSA and Z of the intertrochanteric region and the femoral shaft remained significantly higher in overweight men compared to controls [p < 0.05]. After adjustment for either body weight, BMI or lean mass, there were no differences between the two groups [overweight and controls] regarding the HSA variables [CSA, CSMI, Z, CT and BR] of the three regions
Conclusion: This study suggests that overweight elderly men have greater indices of bone axial and bending strength in comparison to controls at the intertrochanteric and the femoral shaft
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Índice:
IMEMR
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Lebanese Med. J.
Año:
2014