Relationship Between Airway Resistance indices and Maximal Oxygen Uptake in Young Adults The present study aims at assessing the relationship between airway resistance indexes (FEV1, FVC and FEV1/FVC) and maximal oxygen uptake (Vo2max) in young adults. Subjects of the study included 50 healthy males (age, 22.1 ± 2.47 years; FEV1, 3.41 ± .66 liter; FVC, 3.96 ± .56 liter; VO2max, 38.83 ± 9.83 ml.kg-1.min-1) studying at Shahid Chamran University of Ahvaz. After determining subjects' volumes of FEV1, FVC and FEV1/FVC by digital spirometer, maximal oxygen uptake was measured. The study protocol measured VO2max levels using the sub-maximal Astrand-Ryming test on the ergometer cycle. The data were analyzed through descriptive and inferential statistics. Results revealed a significant correlation among the three independent variables of FEV1, FVC, FEV1/FVC and projected VO2max values. Based on the results, it can be concluded that these parameters have a close interaction with higher VO2max levels, and therefore, having a lower airway resistance seems beneficial.

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Background: Studies have shown that physical activity and the consumption of the medicinal herb saffron affect patients who have testicular problems and those who are prone to apoptosis. In this study, the effects of simultaneous eight-week exercise and crocin usage on the oxidation and anti-oxidation indices of male rats' testicles subjected to apoptosis were investigated. Methods: In this experimental study, 56 Wistar rats were randomly divided into 7 groups. The groups receiving supplement, exercise, and supplement received oral doses of 10 and 50 mg per kg of body weight for 8 weeks. The control group received only normal saline and the same amount of supplement as gavage. Fourty-eight hours after the last exercise session and after 10-12 hours of fasting overnight, blood samples were collected from animals after anesthesia and measured by dye-matase and catalase activity and the concentration of malondialdehyde in testicular tissue was measured. Statistical analysis was performed using SPSS software version 20 (P < 0.05). Results: The results showed that in all groups except the sick group through exercise and receiving a dose of 10 and 50 mg per kg crocin, dismutase and catalase indices increase, and the malondialdehyde index decreased and the T4 (doxorubicine + 10 mg crocin) group significantly increased in the antioxidant index and decreased in oxidative index (P < 0.05). Conclusions: The findings of this study showed that endurance training and crocin dose-dependent injections by decreasing the toxicity of doxorubicin reduced the oxidative stress and free radicals and made good compatibility in the antioxidant system of testicular tissue in male rats.