Background and Aims: Nowadays, osteoporosis is increasing, especially in postmenopausal women, due to hormonal changes, including some enzyme factors, such as alkaline phosphatase and blood calcium levels. Therefore, this research aimed to investigate the effect of eight weeks of water exercise with Elaeagnus angustifolia supplementation on alkaline phosphatase and calcium serum levels in overweight and obese postmenopausal women.

Materials and Methods: The current apply quasi-experimental study 42 postmenopausal women living in Qazvin province, Iran, with a mean age of (52.97±5.08) years, a mean weight of (73.95±8.09) kg, and a mean height of (156±5.76) cm, were selected. Then, they were randomly divided into four groups: control (n=10), exercise + placebo (n=10), supplement (n=10), and exercise + supplement (n=12). The exercise included eight weeks of water exercise at an intensity of 60-74% of the maximum heart rate twice a week, and the supplement group received daily oral supplementation of 15 g. Blood samples were collected to measure the serum level of alkaline phosphatase with an ELISA kit and calcium with spectrophotometry method in two stages before and 24 h after the last session exercise. To analyze the differences between groups and within groups, the ANOVA test and paired t-test were used, respectively. The significance level was considered at α=0.05.