JOURNAL OF RESEARCH SPORT REHABILITATION
Year:2013 | Volume:1 | Issue:1|Papers Count:7

Background and Aim: Body image such as other aspects of mental section is a part of our personality which has evolution procedure and in some conditions such as obvious disfigurement it will come into weakness and disorders. The purpose of this study was to compare the body image in individuals with and without hyper kyphosis.Material and Methods: This study was descriptive-correlation. For this purpose 68 subjects (mean ages of 19.9) with scoliosis completed Mendelson Body image questionnaire. Then a control group with similar condition of age, sex, height, weight, BMI and education complete Mendelson questionnaire and compared with hyper kyphosis group. The questionnaire reliability coefficient was 0.79 using Cronbach''s alpha. hyper kyphosis was measured by flexible ruler. Data were analyzed by K-S and Independent T test.Result: The results show that there was significant difference in body image between hyperkyphosis and control group (P=0.02). There was significant difference in subscales of appearance and attribution in two groups (P=0.01, P=0.03). There was no significant difference in weight subscale of two groups (P=0.50).Conclusion: visual deformity and trunk hump in hyperkyphosis individual can affect their body image.

Materials and methods: In this semi-experimental research 20 women patient MS with a mean age of (38±8.81) years, disease history (8±7.09) years and EDSS less than 5, via matched were put in two groups of experimental (10 patients) and control (10 patients). Experimental group within the period of 8weeks (3sessions in week, each session 75 minutes) participated in a selected program exercise. Whereas control group had no regular and systematic physical activity In this research, variables to be tested were knee torque, functional performance, gait balance, shoulder range of motion and quality of life were that respectively isokinetic Biodex, “up and go test”, foot scan, goniometer and Multiple Sclerosis Quality of Life instrument (MSQOL-54), before and after the exercise period these variables were measured. In the end with use of Repeated Measure ANOVA, data were statistically analyzed.Results: findings of research showed a significant difference between average of functional Performance, knee flexion peak torque, shoulder range of motion, among experimental and control groups, whereas this difference in knee extension peak torque, gait balance and quality of life in experimental and control groups was not significant (p<0.05).Conclusion: According to present research findings It seems from of this exercise program can be used to improve the functional Performance and increase range of motion in patients MS.

Background and Aim: The aim of this study was to investigate and comapre the kinematics variables of the Maei-Geri technique in two groups of top-expert and practiced karatekas.Materials and Methods: The subjects included 9 top expert karatekas (members of the Iranian national team) and 7 practiced karatekas (with at least 6 years’ experience but not members of the national team). The measurement was conducted using stereo-videography by which the 3-D coordinates of the reflective markers attached to the anatomical landmarks were traced during motion. The statistical analysis was performed using independent sample T-test for comparison of the groups means and pair sample t-test for inter group comparison.Results: Results indicated well observation of some details of the motion pattern by top-expert group, including maintaining the height and angulation of the trunk before and during kick, a three phased plantar flexion of the ankle joint, and maintaining the orientation of the shank before kick, which were neglected by the practiced group. Also, comparison of the cofficients of variation of the kinematical variables within the two groups revealed that the motion (including the trunk’s vertical movement and rotation, and the ankle, knee and hip joints angular variation) has been conducted with a higher degree of similarity within the top-expert group; this was mostly significant for the knee joint motions.Conclusion: The results of this investigation highlight the importance and effectiveness of the motion analysis methods in studying the detailed performance differences between the expert and non-expert karatekas, which might remain undetected under direct observation.

Background and Aim: The aims of this study are to compare type, prevalence, causes and mechanisms of common injuries on young, middle-aged and elderly male users of outdoor fitness equipment of two brands of Heeger and Nirvana.Materials and Methods: Among 35 existing outdoor fitness equipment trademarks in Iran, Heeger and Nirvana were chosen for this study due to their wide-spread distribution throughout parks of Tehran.Following by a random selection of one park per region/zone a total of 100 male users (n=50 per brand) participated the survey. Each individual completed two questionnaires of personal-general information and injury identification test. Based on Kolmogorov-Smirnov test the normality of data was examined. Afterwards the descriptive statistics followed by inferential statistics including Chi-Square test with 0.05 significance was prepared for out-group comparison.Results: indicated that 49% of pepole who used this equipment was injured and lower body with 63.3% had the highest proportion of injuries. Joint injury (33%), strain (30%) and sprain (12%) the highest type of injury, Knee (37.5%) and waist (22.92%) The most common injury, Tension (33%) the most common cause of injury and applying force against the direction of the muscle force was the most common mechanism of injury by 33%. Also there is no significant difference among injuries between two brands.Conclusion: The findings of this study can be concluded that Joint injury was the most common type of injury, Knee was most susceptible to injury, Therefore, for planning training program and prevention of injuries users should considerate these points.

Background and Aim: Isokinetic contraction is considered as one of the best contraction. One of the most important benefits of this contraction is the torque increment on the muscles, resistance moment adaptation during the range of motion, and decreasing of muscle-skeletal injuries.Materials and Methods: Therefore, the purpose of this study was to make a modeling on elbow flexion with engineering software, and also comparing the isokinetic and isotonic contractions and calculating the isokinetic moment. In this way, the ADAMS software that can be considered as one of powerful software in dynamical analyzing was used.Results: The results showed the advantage of isokinetic contraction than isotonic one, so that the amount of isokinetic moment was 60% greater than isotonic, and also with lesser relative damage in joints. Moreover, the isokinetic moment curve was minimum in the beginning of the motion, and it was maximum in 98 degree and then decreases to the end of motion.Conclusion: This isokinetic moment curve can be use in designing and constructing optimum elbow flexion in bodybuilding devices with the mutual cooperation of engineering and physical education experts.

Background and Aim: Vertical jump test is an important measure to investigate the power and explosive strength, lower extremity injuries mechanism and time estimation of return to sport after the injuries among the athletes. The present study intends to introduce a new developed device which is designed to register and analyze the vertical jump. It also investigates the validity and the reliability of this device.Materials and Methods: The new designed device includes Ultrasound Waves producer sensors which measure the jump after touching the head. Yagami Sargent vertical jump device was applied to investigate the validity of the new device. So, 15 Volleyball, basketball and handball players from the national teams were selected. Any of the selected athletes completed the vertical jump protocol with Yagami Sargent and also with Ultrasonic jump device for 5 times. To check the validity of the new designed device (investigate the correlation between two devices), Pearson correlation coefficient was applied. To investigate the reliability of Ultrasonic jump device, Interclass correlation (ICC) was applied.Results: The findings show that there is high reliability between the results collected from Yagami Sargent device and ultrasonic jump device (r=0.91). Also there is a high ICC rate for the 5 vertical jump tests (ICC=0.96).Conclusion: The findings show that Ultrasonic Jump device is reliable in measuring the vertical jump and in the meantime has a high validity in such measurement. Therefore, applying this device is highly recommended for a fast and accurate vertical jump measurement.

Background and Aim: The purpose of the present study was to compare the electrical activity some of upper extremity muscles of successful versus unsuccessful basketball shots in two distances 4.25, 6.25 m.Materials and Methods: Six professional basketball players (age=23±2.09 years) participated in the study and they were members of Iranian premier basketball league. Electrical activity of muscles were recorded by ME6000 T16 electromyogram devices in frequency of 1000 Hz. Wilcoxon test was used for significant differences between successful versus unsuccessful shots (p£0.05). The output results was include activity time, mean muscle activity and the area under the curve of electric potential (integrated EMG) that investigate in the Anterior Deltoid (AD), Triceps Brachii (TB) and Flexor Carpi Radialis (FCR) muscles.Results: Between parameters investigated in two distances 4.25, 6.25 m no significant differences were observed in successful and unsuccessful basketball shots. In successful shots between two distances 4.25, 6.25 m, integrated EMG (p£0.037) and activity time (p£0.028) of TB muscle and mean muscle activity of AD (p£0.019) and FCR muscles (p£0.049) shown to be significantly greater in 6.25 m versus 4.25 m shots.Conclusion: In general, it seems that with increasing distance from the basket, increase muscle activity and integrated EMG of TB muscle plays an important role in jump shot.