Methods In 425 randomly chosen women, bone mineral density (BMD) assessment of lumbar spine (region L2-L4) was done using LUNAR DPXL device. All the subjects included were healthy with negative significant risk factors for osteoporosis. The demographic data of included subjects are: Mean age of women was 47.1 (20–78) yrs; menarche mean age was 13.5 (10–19) yrs; average weight 68.8 (45–107) kg and average height 160 (147–183) cm; mean value of BMI was 25.6 (14.8–45.6) kg/m2; mean value of BMD was 1.16 (0.701–1.98) g/ccm.
According to BMI the subjects were divided in 4 groups (grade 0 = normal, grade 1 = mild obesity, grade 2 = moderate obesity and 3 = severe obesity) and the linear correlation test was done between BMD and BMI.
Results The results with correlation coefficient (R) and corresponding p values are shown in the Table 1.
Conclusion The significant positive correlation (p = 0,006) was observed between lumbar spine BMD and BMI in whole group. In subjects with normal BMI (group 0) and mild obesity such correlation was not present. In subjects with moderate obesity significant positive correlation was observed (p = 0,021), while in group representing severe obesity subjects highly significant negative correlation was calculated (p = 0,036).
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