The effects of 8-weeks concurrent training on necdin levels and insulin resistance index in obese middle-aged men.

Abstract Background: Obesity per se is a major global health problem leading to an increase in morbidity and premature mortality however increasing physical activity often results in a marked weight loss. Necdin has been shown to be an important negative regulator of adipogenesis of the white adipose tissue. We hypothesized that exercise training would impact necdin synthesis inhibiting adipocity and ultimately reducing obesity. Thus, this study was conducted to determine the effects of 8-weeks concurrent training on plasma necdin levels in obese middle-aged men. Methods: Twenty three sedentary obese middle-aged men were randomly assigned to concurrent training group (CTG: n=12) or control group (CG: n=11). The subjects in concurrent training group performed endurance and resistance training on the same days, 3 days a week, 55-65 (mean: 60) min gradually was spent over 8 weeks Results: At the end of the study, there were significant decreases in total body weight (up to 3.5 kg), body mass index (BMI; 1.2 kg/m2), waist hip ratio (WHR; 0.02 unit) and the fasting plasma insulin levels (up to 58%) and insulin resistance (HOMA-IR; P<0.05) in CTG group compared with the CG group. However, there were no significant differences in the fasting plasma levels of glucose or necdin between the two groups at the end of the study. Conclusion: Concurrent training is a viable tool in reducing body weight. There seems to be no association between 8-weeks concurrent training-induced weight loss and the total plasma necdin levels in obese middle-aged men

Plasma leptin and adiponectin concentrations in postmenopausal women with breast cancer following aerobic exercise

Abstract Introduction: Breast cancer is the most common cancer in postmenopausal women. Exercise affects breast cancer risk and outcomes, but little is known about the mechanisms through which this effect may be mediated. The purpose of this study was to investigate the effect of 12 weeks aerobic exercise on plasma leptin and adiponectin in postmenopausal women with breast cancer. Material &amp; Methods: Nineteen postmenopausal women with breast cancer (aged: 55±2.7 years;±SD) volunteered to participate in this study. The subjects were randomly 38 M. Moghadasi, et al assigned to training group (n=11) or control group (n=8). Subjects in the experimental group performed 12 weeks of an exercise program which consisted of 25 to 45 minutes of walking with an intensity of 45-65% of target heart rate, three times a week. Results: Body mass and BMI decreased (P&lt;0.05) after 12 weeks exercise training compared to the control group, while no significant change in body fat percent and WHR were found. Plasma leptin decreased (P&lt;0.05) and plasma adiponectin increased (P&lt;0.05) in response to 12 weeks aerobic exercise training compared to the control group, while insulin resistance determined by HOMA-IR did not change in the training group. Conclusions: In summary, 12 weeks aerobic exercise increase plasma adiponectin and decrease plasma leptin in postmenopausal women with breast cancer

Effect of 8 weeks resistance training on plasma levels of nerve growth factor and interlukin-6 in female patients with multiple sclerosis

Background: In recent years, evidence from a number of studies has suggested that exercise is a safe and efficient way to induce improvements in a number of physiological functions in multiple sclerosis (MS) patients, but the effects of exercise on nerve growth factor (NGF) and interlukin-6 (IL-6) in these patients are not well known. Thus, the purpose of this study was to evaluate the effect of 8 weeks resistance training on plasma NGF and IL-6 in female patients with MS. Materials and methods: Thirty two female MS patients with 32.4&plusmn;5.5 years of old, and expanded disability status scale (EDSS) 0-4.5, participated in this study. The subjects were randomly assigned to control group (n=13) and training group (n=14). Subjects in training group performed selected upper and lower extremities resistance training with weight-training equipment and rubber bands 3 days a week for 8 weeks. Body composition parameters, NGF and IL-6 levels were measured before and after the intervention. Results: The results showed that body weight, body mass index, body fat mass and EDSS were decreased significantly after 8 weeks in training group compared to control group (P<0.05). Also, no significant differences were seen after the intervention in NGF and IL-6 between the training and control groups. Conclusion: The results suggest resistance training with specific intensity and duration utilized in this study improves EDSS in female patients with MS but it has no effecting on NGF and IL-6 in these patients