| Objective To explore the effect of the time of sunshine on osteoporosis in the elderly. Methods According to the experimental design 120 patients with osteoporosis were selected. They were divided into the experiment group 1, group 2, and the control group. The patients in 3 groups abstained from smoking and wine and had rational dietary intake (rich in calcium, phosphorus, protein, and fruits). Patients in control group had 1-hour sunlight from 8 to 9 am daily (except in rainy days), and received 70 mg alendronate once a week for 8 months. Patients in experiment group 1 and group 2 received 2 hours or 3 hours morning light a day, respectively, on the basis of control group. The change of bone mineral density and the degree of pain were observed. Results The difference between experiment group 1 and the control group was significant (P<0.05). The difference between the experiment group 2 and experiment group 1 was not significant (P>0.05). Conclusion The effect of 2-hour illumination is better than that of 1-hour for osteoporosis patients. The effect of 3-hour and more sunlight is not better than that of 2-hour for osteoporosis treatment. |