Weeks Of Moderate Aerobic Training Research Articles

The effect of aerobic training and curcumin supplementation on the expression of IGF-1 gene in muscle rat

Background: The purpose of this research was to investigate the effect of four weeks of moderate aerobic training and nanocurcumin supplementation on IGF-1 gene expression and its receptor in the soleus muscle of rats. Materials and Methods: 32 male Wistar rats, approximately eight weeks old, with a weight range of 200±10 grams, were prepared and kept for one week under standard conditions of light, temperature, and humidity. Rats were randomly divided into 4 groups of 8 series: healthy control group, aerobic training group, nanocurcumin group and aerobic training + nanocurcumin group. The training protocol was for 4 weeks, 5 days a week, in the first week, 20 minutes of activity with a speed of 18 meters per minute, and finally in the 4th week, it reached 35 minutes of activity with a speed of 20 meters per minute. Nanocurcumin supplement was also used for each animal at 80 mg / kilogram of body weight. One-way analysis of variance and Bonferroni's post hoc test was used at the significance level (P<0.05). Results: The results showed an increase in IGF-1 and IGF-1R gene expression levels in the soleus muscle in all groups compared to the control group. Conclusion: The combination of training and nanocurcumin supplementation probably increases the antioxidant capacity of the body and causes a greater increase in the expression of the IGF-1 gene and IGF-1R in skeletal muscles, which indicates more anabolic effects.

The effects of four weeks aerobic training on saliva cortisol and testosterone in young healthy persons.

[Purpose] The purpose of this study was to evaluate the effect of 4 weeks moderate aerobic exercise on outcome measures of saliva stress hormones and lactate levels in healthy adult volunteers. [Subjects and Methods] Sixteen healthy students with an age range of 15–25 years participated in this study. The participants performed an exercise test of moderate intensity for 4 weeks, three times per week. The exercise was treadmill walking. Saliva concentrations of cortisol, testosterone and lactate dehydrogenase (LDH) were measured before and after the 4 weeks of moderate aerobic training using immunoassay techniques. [Results] After 4 weeks of exercise, there were significant increases in cortisol, free testosterone levels, and LDH activity along with a significant decrease in the ratios between testosterone and cortisol levels. No significant correlations were found among the studied parameters in the resting stage, a result which supports the positive effect of exercise on stress hormones following 4 weeks of training. [Conclusion] The results suggest that four weeks exercise of moderate intensity significantly affects the salivary stress hormones of young healthy volunteers. The data support the importance of salivary stress hormones as potential biological markers especially for older ages. However, more research is required to validate these biological markers which determine the host response to physical activity.

Effect of Moderate Aerobic Training on Bone Metabolism Indices among Adult Humans.

This study assessed the osteogenic effect (T-Score) and changes in bone markers in healthy subjects by 12-weeks of aerobic training. Total 65 healthy subjects (36 males, 29 females), their age ranged between 30 and 60 years with normal body mass index, were recruited to participate in this study and they were selected among healthy subjects who do not have any metabolic disorders and were not receiving any medication that could affect the bone turnover. Standardized physical examination and collection of serum samples were performed at base line and after 12 weeks of moderate aerobic training to measure bone formation markers (osteocalcin (OC) and bone specific alkaline Phosphatase (BAP) and bone resorption marker Deoxypyridinoline (DPD), and serum calcium. Each subject participated in exercise training program for 12 weeks, three times per week. The results showed that the 12 weeks of moderate aerobic training produced a significant improvement in all bone metabolism indices including Serum bone-specific alkaline phosphatase, serum osteocalcin, serum free Calcium and bone mineral density among all subjects. Conclusion : Moderate intensity of aerobic training exerts significant positive effects on bone formation marker and bone density associated with a significant decrease in the rate of bone resorption that could assist in preventing or decelerating osteoporosis.

Change in cutaneous perfusion following 10 weeks of aerobic training in Type 2 diabetes

A small, but positive, association between aerobic training status or prior maximal exercise and enhanced dorsal foot skin perfusion in active individuals with Type 2 diabetes has been shown. This study, therefore, was designed to examine whether an aerobic training intervention would positively affect cutaneous perfusion in sedentary Type 2 diabetic individuals as well. Nine sedentary participants with Type 2 diabetes (DS) and 10 obese nondiabetic controls (CS) were studied. Prior to the initiation of aerobic training, dorsal foot cutaneous perfusion was measured noninvasively by continuous laser Doppler assessment at baseline and during localized heating to 44 °C. These measurements were repeated 48–72 h following 10 weeks of moderate aerobic training performed 3 days per week. Interstitial nitric oxide (NO) levels were measured concurrently in the contralateral foot dorsum. Aerobic training did not significantly enhance baseline skin perfusion, nor were interstitial NO levels different under any condition. At baseline, groups differed only in glycated hemoglobin (HbA1c), fasting serum glucose, HDL-cholesterol, and insulin resistance. At rest, cutaneous perfusion during local heating to 44 °C was significantly lower in DS before training, but did not differ significantly from CS afterward. Neither group, however, experienced significant increases in dorsal foot perfusion during local responsiveness to heating to 44 °C following 10 weeks of moderate aerobic training, despite slightly lower perfusion in DS before training; these findings were independent of interstitial NO levels. Thus, moderate aerobic training for only 10 weeks does not appear to reverse the impairment in cutaneous perfusion of the foot dorsum in response local heating in a Type 2 diabetic population.