ABSTRACT
The objective of this study was to analyze the risk factors for osteoporosis in 325 volunteer men aged 50 years or older. Participants completed questionnaires including demographic and social information, personal medical history, maternal and paternal history of bone fracture after the age of 50 years, smoking habit, alcoholic beverage consumption, calcium intake and present and past physical activities. The individuals were submitted to bone densitometry of the femoral neck and to anthropometric measurements. The chi2 test and multiple logistic regression were used to evaluate the association between the independent variables and the presence of osteoporosis. We concluded that the independent risk factors for osteoporosis were body mass index, present practice of physical/leisure activity (last 12 months), age, present and past smoking habit, no current thiazide diuretic use, white race and maternal history of fracture after the age of 50 years.
Subject(s)
Femur Neck/physiopathology , Osteoporosis/etiology , Absorptiometry, Photon/methods , Age Factors , Aged , Benzothiadiazines , Body Mass Index , Bone Density/physiology , Case-Control Studies , Chi-Square Distribution , Diet Records , Diuretics , Educational Status , Exercise , Humans , Logistic Models , Male , Middle Aged , Risk Factors , Smoking , Sodium Chloride Symporter Inhibitors/therapeutic useABSTRACT
Bone mineral density (BMD) in the lumbar spine (LSBMD), femoral neck (FNBMD) and whole body (WBBMD) and whole body tissue composition were evaluated in 288 Brazilian men 50 years and older, 80% white and 20% Mulattoes. Age was inversely correlated with WBBMD (r = -0.20) and FNBMD (r = -0.21) but not with LSBMD (r = 0.03). Body mass index and weight showed a strong positive correlation with WBBMD (r = 0.48 and 0.54), LSBMD (r = 0.37 and 0.45) and FNBMD (r = 0.42 and 0.48). Correlation with height was positive but weaker. No significant bone loss at the lumbar spine level was observed as the population aged. FNBMD and WBBMD decreased significantly only in the last decade (age 70-79) studied. BMD was higher for Brazilian men as compared to Brazilian women at all sites. No significant differences were observed between Brazilian and the US/European male population for BMD in the femoral neck. BMD measured by dual-energy X-ray absorptiometry in South American men is reported here for the first time. A decrease in FNBMD was detected only later in life, with a pattern similar to that described for the US/European male population.
Subject(s)
Bone Density , Femur/physiology , Osteoporosis/physiopathology , Spine/physiology , Age Factors , Aged , Body Mass Index , Brazil/epidemiology , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Osteoporosis/epidemiology , Reference Values , Sex Factors , Statistics, NonparametricABSTRACT
Bone mineral density (BMD) in the lumbar spine (LSBMD), femoral neck (FNBMD) and whole body (WBBMD) and whole body tissue composition were evaluated in 288 Brazilian men 50 years and older, 80 percent white and 20 percent Mulattoes. Age was inversely correlated with WBBMD (r = -0.20) and FNBMD (r = -0.21) but not with LSBMD (r = 0.03). Body mass index and weight showed a strong positive correlation with WBBMD (r = 0.48 and 0.54), LSBMD (r = 0.37 and 0.45) and FNBMD (r = 0.42 and 0.48). Correlation with height was positive but weaker. No significant bone loss at the lumbar spine level was observed as the population aged. FNBMD and WBBMD decreased significantly only in the last decade (age 70-79) studied. BMD was higher for Brazilian men as compared to Brazilian women at all sites. No significant differences were observed between Brazilian and the US/European male population for BMD in the femoral neck. BMD measured by dual-energy X-ray absorptiometry in South American men is reported here for the first time. A decrease in FNBMD was detected only later in life, with a pattern similar to that described for the US/European male population
