Introduction: Recent evidence has shown that acute exercise modulates the immune response in healthy individuals, although the effect on smokers has not drawn much attention. This study examined acute and post exercise inflammatory responses in smokers and nonsmokers to moderate aerobic exercise. Methods: For this purpose, Fifteen recreationally sedentary male smokers and 15 nonsmokers matched for age (35.5 ± 5.8 years) and BMI(31.30 ± 4.5 kg/m2) were familiarized and underwent aerobic exercise testing involved 40 min running on flat surface with no slope at 70(%) of maximal heart rate. Venous blood was obtained pre-exercise (baseline), 0, 60 min and 24 hours for analysis of tumor necrosis factor-alpha (TNF-α), and interleukin-1 beta (IL-1β) of 2 groups. Experimental data were analyzed by one-way analysis of variance with repeated measures in each group. Results: No differences existed between groups for baseline IL-1B between 2 groups but serum TNF-α was higher in smokers. Aerobic exercise test results a significant decrease in serum TNF-α at 0, 60 min and 24 hours compared baseline in smokers but not in non-smokers. Serum IL-1βremained unchanged at all blood samples after exercise test in both groups. Conclusion: All together, based on acute and recovery response of TNF-α to exercise, it seems that a moderate aerobic exercise has beneficial effects on inflammatory profile in smokers.
Objective: Obesity is associated with inflammatory process and many different diseases. The objective of this study was to assess the impact of short term aerobic training on serum resistin and insulin resistance in adult obese women. Materials and Methods: In this quasi-experimental study, thirty untrained adult obese females matched for age 35-45 years old with body mass index (BMI) 30-36 kg/m2 were divided randomly into exercise (aerobic intervention; 6 weeks, 3 days/weekly, %55-70HRmax) and control (no training) groups. Pre and post-training of fasting blood samples were collected for measure serum resistin. Insulin resistance was calculated by HOMA-IR. Data were analyzed by the independent samples T-test. Results: Aerobic training resulted in significant decrease in BMI (32.1 (± 2.76) vs 31.6 (± 2.80) kg/m2, P-value: 0.023), body fat percentage (44.7 (± 4.55) vs 44 (± 4.33), P-value: 0.028) and fasting glucose (94 (± 8.9) vs 79 (± 5.8) mg/dl, P-value: 0.011) in exercise group. No changes were observed on insulin resistance (1.43 (± 1.11) vs 1.18 (± 0.57) HOMA-IR, P-value: 0.124) and serum resistin (2.20 (± 1.07) vs 1.58 (± 0.87) ng/ml P-value: 0.062) by training program. All variables remained unchanged in control subjects. Conclusion: Despite improving fasting glucose, a short-term aerobic training is not associated with anti-inflammatory property for obese females. Improved glucose could be likely attributed to other changes in metabolic markers in response to exercise training and further studies are necessary to clarify possible mechanisms
Previous studies have shown that nicotine can affect beta cell function and insulin secretion in cigarette smokers. The aim of present study was to evaluate the effect of 10 weeks aerobic exercise on insulin and beta cell function in smokers. In this semiexperimental study with pre and post-training design, a total of 36 adult smoker men aged 41±2.5 years were selected into either exercise (n=18) or control (n=18) groups. Exercise participants underwent a 10-weeks supervised aerobic training intervention (3 days/weeks for 45-60 min at 60-80% HR max). Pre (baseline) and post training of fasting glucose, insulin serum and beta cell function were measured of two groups. Aerobic intervention resulted in significant decrease in fasting glucose. In addition, aerobic training induced a significant increase beta cell function and serum insulin in exercise group. The control group exhibited no significant change in any variables. Long term aerobic training is associated with improvement in glycemic profile in male's smoker. The benefits effect of aerobic intervention on glucose homeostasis in cigarette smokers may be attributed to improved beta cell function.
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