RESUMEN
[Purpose] The purpose of this study was to investigate the influence of personal protective equipment on the oxidant/antioxidant parameters and DNA damage in firefighters during training and recovery. [Subjects and Methods] Twelve male nonsmoking volunteer firefighters (35.1 ± 7.2â years) underwent two maximal treadmill training (9 METs, 6â km/h), within 2 weeks, one in regular clothes and one in personal protective equipment weighing 22.1â kg. Blood samples were obtained before, right after, and 40â min after training. Plasma conjugated dienes, total radical trapping antioxidant potential, erythrocytes antioxidant enzymes activities, and leukocyte DNA damage were measured. [Results] Wearing personal protective equipment during treadmill walking training resulted in increases of plasma conjugated dienes, total radical trapping antioxidant potential, and leukocyte DNA resistance to oxidative stress, which were recovered after in 40â min of rest. Erythrocyte antioxidant enzymes activities remained unchanged during the training either with regular clothes or personal protective equipment. [Conclusion] These results suggest that wearing personal protective equipment during firefighting work could induce oxidative stress, which was enough to produce DNA damage in leukocytes.
RESUMEN
PURPOSE: This study is aimed at analyzing how exercise and gardenia affect hormones that regulate energy metabolism by having middle aged, obese women exercise and take gardenia simultaneously. METHODS: This study assigned a total of 35 middle-aged obese women with body fat percentage of more than 35 percent into 9 people of the complex treatment group of intake of gardenia and exercise, 9 people of the exercise group, 9 people of the gardenia group and 8 people of the control group in order to find out the effect of the intake of gardenia fruits and Combined exercise of 8 weeks on the body composition, hormones regulating energy metabolism. This study arranged .08 g per weight of 1 kg of the gardenia fruits to be taken twice a day for 8 weeks after breakfast and dinner through the numerical method of roasting the gardenia fruits on fire. And the exercise program was set to be five times a week for 8 weeks, whereas the aerobic exercise of 60 to 70 minutes was 50 to 60 percent for HRmax; thus, the resistance exercise was set to be 1-RM 50 percent. As for the data analysis, the two-way repeated measures ANOVA was utilized for the analysis of interactive effect between groups and times. RESULTS: Thus, the obtained conclusion is as follows: The %fat and WHR has decreased further in the gardenia+exercise group and the exercise group as compared with the control group. And the visceral fat area has decreased further in the gardenia and exercise group and the gardenia group as compared with the control group (p<.05). In addition, the gardenia+exercise group and the exercise group were found to have a significant improvement effect in all the items of body composition, and the gardenia group has reduced the fat percentage and BMI after the treatment (p<.05). Leptin has decreased further in the gardenia+exercise group and the exercise group as compared with the control group, and the insulin resistance and GLP-1 have decreased in all the treatment groups (p<.05). CONCLUSION: As a result of this study, all the treatment groups were found to have an improvement effect of research variables in general; therefore, the single treatment and complex treatment for the middle-aged obese women were found to have a positive impact on body composition, adjusting factors for energy metabolism. Also, the complex treatment was found to be more positive in terms of change amount. In particular, in the case of visceral fat area that is the major risk factor for metabolic disease of middle-aged obese women, it was found to have decreased further in the complex treatment group than the gardenia group; therefore, the complex treatment was found to be more advantageous.