Showing 3 results for Lung
Sh Mirdar Harijani, N Musavi,
Volume 18, Issue 19 (7-2020)
Abstract
The aim of this study was to investigate changes in immunoreactivity of Ras and Raf-1 in lung epithelial cells of rats exposed to carcinogen NNK after swimming training. 50 Wistar rats were randomly divided into five groups: control, training, training + NNK, NNK and sham. NNK-induced groups received NNK Subcutaneously once a week at a dose of 12/5 mg per kg body weight for 12 weeks. The exercise training consisted of submaximal swimming training for 12 weeks. The percentage of reaction of Ras and Raf-1 in lung epithelial cells were measured by HIC. It was observed no significant change in the Ras and Raf-1 immunoreactivity of lung epithelial cells in training group compared to control. A significant incretion of the Ras and Raf-1 immunoreactivity was found in NNK group compared to control group (p=0.001). Furthermore, a significant reduction of the Ras and Raf-1 immunoreactivity was observed in exercise + NNK group when compared to NNK group (p=0.001). Generally it could be confirmed that regular submaximal aerobic training plays an important role in inhibition of the effects of lung carcinoma induced by NNK via reduction of Ras and Raf-1 activity.
Ms Sepideh Samavati Sharif, Phd Abbas Ferjad Pezeshk, Phd Mohammad Yousefi,
Volume 19, Issue 22 (12-2021)
Abstract
This study aimed to determine the role of strength, expulsive power and range of motion of lower limb muscle on the fencing performance of elite florists. In this study, eight elite fencers’ participated. Kinetic variables measured using force plate and kinematic variable measured using motion analysis system. The squat jump test used to measure the compulsive power of the lower extremity muscles of the fencers. The Drop-jump test used to measure the lower strength of the muscles of the lower extremity muscles. Descriptive statistics (mean and standard deviation) used to describe the data and Pearson correlation coefficient used for determine the relationship between data (P≤0.05). The results of this study showed there is a significant relationship between squat jump power and mechanical energy and drop jump height with lunge speed and also between ankle range of motion with peak force and impulse in the anterior direction (P<0.05). Given the results of this study, coaches should have a special attention on the strength and explosive power of plantar flexor muscles.
Fatima Riyahi, Heydar Sadeghi, Elham Shirzad,
Volume 22, Issue 27 (8-2024)
Abstract
The fencing lunge is one of the most common and fundamental attacking moves in fencing. The aim of this study was to provide kinematical compare of upper extremity among elite female and male senior fencers when performing a lunge. Four female and four male members of Iran National Team were selected as research sample. The participants were filmed when performing a complete lunge with a camera of 300 Hz sampling rate to evaluate kinematical parameters. The student's-t test revealed that elite male fencers had significantly shorter reaction and movement time comparing with elite female fencers. No major differences in other kinematic parameters indicate that elite male and female fencers performed lunge in similar way. The final conclusion of this study is that the existing differences in time of lunge technique may suggest the need for alternative training strategies to prepare fencing athletes.The examination of the kinematic analysis of the upper body in male and female elite fencers demonstrated that the dissimilarity in the execution speed of the lunge technique between the two genders cannot be accounted for by kinematic changes in joint movements. The differences highlighted in this study can serve as a basis for formulating distinct training and coaching strategies, with the aim of better preparing athletes for decision making and quick movements.
