Ali Zahiri; Mehdi Shahbazi; Mohammad Reza Kordi; Jamal Fazel Kalkhoran
Abstract
The aim of this study was to investigate the effect of central and peripheral fatigue on motor coordination in collegiate athletes. The population consisted of all the students of Faculty of Physical Education and Sports Sciences of University of Tehran and 24 subjects were selected by convenience sampling ...
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The aim of this study was to investigate the effect of central and peripheral fatigue on motor coordination in collegiate athletes. The population consisted of all the students of Faculty of Physical Education and Sports Sciences of University of Tehran and 24 subjects were selected by convenience sampling method. They were randomly divided into two groups (central and peripheral fatigue) depending on the type of fatigue after a bimanual motor coordination pretest. Bimanual motor coordination posttest was performed after the intervention for 12 hours. In order to investigate the differences between the groups, independent t test and to determine differences within a group, dependent t test were used with the significance level of P≤0.05. Results showed that the mean time to complete the task and the timing error in central (P=0.004) and peripheral (P=0.0001) fatigue groups significantly increased compared with the pretest. Also, a significant difference in bimanual motor coordination between the two groups was observed in posttest (P=0.006). According to the results, it is suggested that athletes' training and working programs should be planned so that they include exercises to increase mental stamina along with physical exercises and that the athletes can provide their optimal performance in different conditions.
Jamal Fazel; Sahar Avazpour; Hamed Alizadeh
Abstract
Perfectionism, in fact, is an irrational belief individuals have about themselves and their surroundings. Perfectionists believe that they and their surroundings must be complete and any attempt in life must be without error. The aim of the present study was to determine the relationship of positive ...
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Perfectionism, in fact, is an irrational belief individuals have about themselves and their surroundings. Perfectionists believe that they and their surroundings must be complete and any attempt in life must be without error. The aim of the present study was to determine the relationship of positive and negative perfectionism with competitive state anxiety. 100 soccer players completed Positive and Negative Perfectionism Scale and Competitive State Anxiety Inventory. For data analysis, Pearson correlation coefficient was used to determine the relationship of the two variables of positive and negative perfectionism with competitive state anxiety and multivariate regression was applied to predict competitive state anxiety by positive and negative perfectionism (P=0. 05). The results showed a negative and significant relationship between positive perfectionism and competitive state anxiety and its somatic and cognitive subscales while there was no negative and significant relationship between positive perfectionism and 'self-confidence' competitive state anxiety subscale. In contrast, other findings showed a positive and significant relationship only between negative perfectionism and 'self-confidence' competitive state anxiety subscale while no significant relationship was observed between negative perfectionism and competitive state anxiety and its other subscales. The final results of regression showed that positive and negative perfectionism could predict subscales of competitive state anxiety in non-professional soccer players.
Jamal Fazel
Volume 3, Issue 2 , October 2012, , Pages 81-98
Abstract
The aim of this study was to compare big five personality traits between male and female athletes and non-athletes. 200 athlete and non-athlete students (100 men and 100 women) were selected by simple random sampling method as the sample of the study. The subjects completed NEO – FFI. The data were ...
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The aim of this study was to compare big five personality traits between male and female athletes and non-athletes. 200 athlete and non-athlete students (100 men and 100 women) were selected by simple random sampling method as the sample of the study. The subjects completed NEO – FFI. The data were analyzed by SPSS 16, two-way ANOVA to determine the differences among the groups and Tukey post hoc test to compare and determine the mean difference between each two groups. The results showed a significant difference among groups in neuroticism, extraversion, agreeableness and conscientiousness while no difference was observed among groups in flexibility. Also, there was no significant difference in neuroticism and flexibility between gender and sportsmanship while there was a significant difference in extraversion, agreeableness and conscientiousness.
Jamal Fazel; Amir Abbasgholipour; Nima Gharedaghi
Volume 3, Issue 1 , June 2011, , Pages 129-145
Abstract
The role of higher education is to educate all individuals and it includes not only the intelligence but also the psychological and physiological aspects. The aim of this study was to investigate the effect of sedentariness on self-esteem and body fat mass in students of University of Tehran. The statistical ...
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The role of higher education is to educate all individuals and it includes not only the intelligence but also the psychological and physiological aspects. The aim of this study was to investigate the effect of sedentariness on self-esteem and body fat mass in students of University of Tehran. The statistical population of the study consisted of all students of University of Tehran and 320 subjects were randomly selected as the sample. Independent t test and Pearson correlation coefficient were used to analyze the data. The results showed that 62% of subjects were sedentary and 38% had sufficient activity. Average body fat percent in all subjects was 26.14% (S.D±6.53). 79% of all students had high self-esteem and 21% had low self-esteem. There was a significant difference between male and female subjects in physical activity. Also, there was no significant difference in body fat mass between active and sedentary subjects. Results did not show any significant relationship between physical activity level and low and high self-esteem.
Jamal Fazel; Morteza Homayoun; Amir Shariati
Volume 2, Issue 3 , October 2010
Abstract
The aim of the current study was to investigate three volleyball skills in three training conditions of blocked, random and serial to reveal their effects in three phases of acquisition, retention and transfer. 60 amateur male students (mean age = 21.5 years, SD= 1.2) were voluntarily selected and randomly ...
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The aim of the current study was to investigate three volleyball skills in three training conditions of blocked, random and serial to reveal their effects in three phases of acquisition, retention and transfer. 60 amateur male students (mean age = 21.5 years, SD= 1.2) were voluntarily selected and randomly divided into three training groups (blocked, random and serial). A pretest was used to match the subjects. In the acquisition phase, the subjects of each group repeated three skills of pass tiller, forearm pass and overhead service for 378 times for 9 sessions. In three sessions in the training phase, 45 acquisition tests were completed. 48 and 72 hours after the last session, subjects participated respectively in 15 retention and transfer tests. Analysis of Variance (ANOVA) and Tukey post hoc test were used to analyze data, to compare the means of pretest and tests in acquisition, retention and transfer phases of the three training methods. The results revealed a significant difference (P
