The purpose of this study was to examine the association among bone mineral density (BMD), biochemical bone markers, nutrients, and salt intake in premenopausal and postmenopausal women. We evaluated 431 subjects who visited a health promotion center of a university hospital between January 2008 and July 2009. We excluded those who were taking medications or who had an endocrine disorder affecting osteoporosis. The subjects were divided into premenopausal (n = 283) and postmenopausal (n = 143) women. We evaluated the correlation among BMD of the lumbar spine, femoral neck, and total femoral, as well as biochemical bone markers, hormone, serum profiles, general characteristics, nutrient intakes, and food intake frequencies. From a stepwise multiple regression analysis, lumbar spine BMD was positively correlated with weight (p < 0.001) and negatively correlated with osteocalcin (OC)(p < 0.001), Femoral neck BMD was positively correlated with weight (p < 0.001) and negatively correlated with C-telopeptide (CTx) and alkaline phosphatase (ALP)(p < 0.001, p < 0.05). In premenopausal women, femoral total BMD was positively correlated with BMI (p < 0.001) and negatively correlated with CTx (p < 0.001). In postmenopausal women, lumbar spine BMD was positively correlated with calcium intake (p < 0.01) and negatively correlated with sodium intake (p < 0.01). Femoral neck and femoral total BMD were both positively correlated with weight (p < 0.001), and femoral neck BMD was negatively correlated with age and ALP (p < 0.001, p < 0.05). Femoral total BMD was negatively correlated with age and OC (p < 0.001, p < 0.01). These results suggest that reducing sodium intake may play an important role delaying bone resorption and preventing a decrease in BMD.
Alkaline Phosphatase ; Bone Density ; Bone Resorption ; Calcium ; Collagen Type I ; Eating ; Female ; Femur Neck ; Health Promotion ; Humans ; Osteocalcin ; Osteoporosis ; Peptides ; Sodium ; Spine

PURPOSE: The purpose of this study was to measure knowledge and attitude about aging and life satisfaction among older Korean adults and to examine the influence of attitude and knowledge about aging on these adults' life satisfaction. METHODS: A cross-sectional and correlational design was used. A total of 405 older adults were surveyed using a written questionnaire at six elderly welfare centers in a metropolitan city in South Korea in mid April 2011. The data were analyzed using descriptive statistics, Pearson's correlation analysis, and multiple regression. RESULTS: The score of knowledge on aging was below the medium level. Attitude about aging was neutral, and life satisfaction was at the medium level. Variables such as female sex, age, economic status, monthly allowance, living with a spouse, self-rated overall health, knowledge and attitude about aging accounted for 33.8% of the total variance in predicting life satisfaction of the older adults. Older age and lower economic status reduced life satisfaction. Being female, having a monthly income of 300,000 Korea Republic Won or more, living with a spouse, and better knowledge and attitude about aging were associated with enhanced life satisfaction. CONCLUSION: The effect of knowledge and attitude about aging on life satisfaction is significant. Economic status, living with a spouse and self-rated overall health status are also predictive factors in life satisfaction. Consequently, nursing interventions for education and psychological support to increase knowledge about aging and induce a positive attitude towards it should be developed to improve older adults' life satisfaction.
Adult ; Aged ; Aging ; Female ; Humans ; Korea ; Personal Satisfaction ; Republic of Korea ; Spouses ; Surveys and Questionnaires