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Mr Hamid Reza Barzegar Pour, Dr Fariborz Hovanloo, Dr Hamid Rajabi, Mr Naser Asgarzadeh,
Volume 14, Issue 11 (4-2016)
Abstract

The aim of the present research is comparing the effectof periodic trainingin hypoxic and normoxic conditions on anaerobic performance of athletes .Subjects of this research were 16 male volunteer students.Subjects were divided to two groups of eight by exercising in hypoxic condition(H 3300) normocytic.Anaerobic performance (peak power, average power) through the Wingate test and lactate concentration were measured before and after the Wingate test.After 24 hours in hypoxic condition,and after 48 hours in normoxic condition the measures of W max  were determined.The intensity of exercises in both groups (one minute with intensity of 80% -85% Wmax, and two minutes with 50% Wmax) and exercise duration (30 minutes)were equalized. The training program consisted of 12 sessions in a row. After that the pre-test variables were measured again .After testing the normal distribution given by Kolmogorov – Smirnov test, dependent and independent t-Test with a confidence level of 0.05 ≥ p showed that this training improved aerobic performance in both groups, also five minutes after the Wingate test lactate concentration was decreased in both groups, but there was no difference between the 12 sessions of the periodic training in hypoxic and normoxic conditions on anaerobic performance. So it can be stated that the training used in this study can improve the anaerobic performance, but the severity and duration of hypoxia used in this study was not so much to improve anaerobic performance in hypoxic group more than normocyticone


Alireza Hosseini, Dr Mostafa Zareei, Fariborz Hovanloo,
Volume 19, Issue 22 (12-2021)
Abstract

Wrestling is a high contact sport with a significant risk of injuries. Identifying risk factors can help preventing wrestler’s injuries. little is known about the contribution of balance and proprioception to sport injuries. The purpose of this study was to find out the relationship between dynamic balance and knee proprioception and the injuries in young wrestler.72 young wrestlers from Tehran primer league participated in this study. Before the start of season, proprioception was measured at 30°, 60° and 90° knee flexion using the Biodex Isokinetic pro 4 system. Dynamic balance was measured by Biodex balance system. Injuries were recorded by the team's medical staff. Logistic regression modeling indicated that there is no significant relation between Dynamic balance and proprioception of knee at 30 and 60 and at 90 degree and musculoskeletal injuries. Balance and proprioception testing, as performed in the present study, cannot be recommended as a screening test to predict injuries in young male wrestler.


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