Effects of Eight-Week Combined (Resistance and Endurance) Training on Serum Levels of Prostate Specific Antigen (PSA), Sex Hormone Binding Globulin (SHBG), and Phosphatase and Tensin Homolog (PTEN) in Men with Prostate Cancer

Background: Prostate cancer (PC) is the second most prevalent cancer and the sixth cancer leading to death in men worldwide. Objectives: The purpose of this study was to examine the effect of eight weeks of combined training on specific markers of prostate cancer in older adults. Methods: Twenty older adults (627 years) with prostate cancer were divided randomly into the control (n = 10) and training (n = 10) groups. The training group performed exercise training in three sessions a week for eight weeks. Resistance training included two sets of 10 repetitions at 60 - 75% of one-repetition maximum, and endurance training contained treadmill running for 20 - 35 minat 60 - 75% of maximumheart rate. Bruce test, one-repetitionmaximum, and ELISA technique were used respectively to measure the aerobic performance, strength performance, and serum levels of prostate specific antigen (PSA), sex hormone binding globulin (SHBG), phosphatase and tensin homolog (PTEN), and testosterone (TS). A two-way analysis of variance with repeatedmeasures was used to specify the differences. Results: Weight, fat percentage, body mass index (BMI), waist-hip ratio (WHR), glucose, insulin, and PSA were significantly lower in the training group than the control group (P < 0.05). Furthermore, strength performance, aerobic performance, SHBG, TS, and PTEN were significantly higher in the training group than in the control group (P < 0.05). Conclusions: Combined training can have an influential role in physical condition improvement through decreasing the PSA serum level and increasing SHBG, TS, and PETEN serum levels, which helps patients with prostate cancer to be cured.