Payam Heydari, Elnaz Mohammadzadeh, Sakineh Varmazyar, Fatemeh Beigzadeh,
Volume 13, Issue 2 (5-2016)
Abstract
Background and aims: The maximum aerobic capacity or VO2max is a measure of the maximum volume of oxygen that can be absorbed by respiratory system and delivered to the acting muscles through blood flow. The aims of this study were to determine the correlation between the two methods of treadmill and step tests in estimating the maximum aerobic capacity and it's affecting factors among students of Qazvin University of Medical Sciences.
Methods: This cross-sectional study conducted among the 68 students (47 males and 21 females) that participated voluntarily. First, the participants completed physical activity readiness Questionnaire (PAR-Q) and demographic characteristics, and if they were met inclusion criteria, step and treadmill tests were done according to ASCM by treadmill and step tests according to ACSM and Gerkin protocols respectability.
Results: The results showed that the mean and standard deviation of maximum aerobic capacity estimated from ACSM and Gerkin protocols were 2.86 ±0.66 and 1.86 ±0.32 respectively. Significant and Positive correlation were estimated between two test for maximum aerobic capacity via two protocols of ASCM and Gerkin (r=0.74 and p<0.001). Also, there were significant associations among maximum aerobic capacity with age, sex, weight, height, and BMI in both ACSM and Gerkin protocols.
Conclusion: According to the results of almost the same ACSM and Gerkin tests, can be used step test instead of the treadmill test to estimate the maximum aerobic capacity. In addition to Physiological characteristics of the human such as sex, age, height and weight have main roles in maximum aerobic capacity.
Reza Pourbabaki, Sajjad Samiei, Monireh Khadem, Saba Kalantari, Zahra Beigzadeh, Mr Seyed Jamaleddin Shahtaheri,
Volume 18, Issue 1 (3-2021)
Abstract
Introduction: Recently, the growing attention of the scientific community has been focused on the threat to health created by environmental pollutants, including pesticides such as chlorpyrifos (CPF), and on the need of finding effective ways to treat and prevent the unfavorable health effects of exposure to them. Particularly promising for CPF, and thus arousing the greatest interest, is the possibility of using various ingredients present in plants, including mainly polyphenol compounds. As the liver is one of the organs for this pesticide and disturbances in the proper functioning of this organ have serious consequences for health, the aim of the present review was to discuss the possibility of using polyphenol‐rich food products as the strategy for the protection against this xenobiotic hepatotoxicity and treatment of this pesticide‐induced liver damage.
Methods: A comprehensive search was performed in various databases using specific keywords such as "biologically active compounds", "antioxidants", "Chlorpyrifos/CPF", "environmental exposure", "health effects", "hepatotoxicity", "liver damage", "mechanisms of Chlorpyrifos/CPF action", "oxidative stress", "preventive strategies", "polyphenols", "protection", "risk for health", and "treatment".
Results and Conclusion: Due to the ability and the strong antioxidative potential of polyphenols, as well as their abundance in dietary products, it seems to be of high importance to consider the possibility of using polyphenols as potential preventive and therapeutic agents against CPF hepatotoxicity, determined by its strong pro‐oxidative properties. Although most of the data on the effectiveness of polyphenols comes from studies in animals, the fact that some of them are derived from experimental models reflecting human exposure to this pesticide allows us to assume that some polyphenol food products may be promising protective effect against CPF hepatotoxicity in humans.
