Morteza Taheri; Fahimeh Noorian
Abstract
The aim of this study was to investigate the effect of neurofeedback training on sleep quality and psychological skills of athletes with psychophysiological approach. The research method was semi-experimental and application with pretest and posttest design and a control group. 31 athletes who ...
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The aim of this study was to investigate the effect of neurofeedback training on sleep quality and psychological skills of athletes with psychophysiological approach. The research method was semi-experimental and application with pretest and posttest design and a control group. 31 athletes who were members of a sport team gained the criteria to enter the study. They were randomly assigned to experimental and control groups and the experimental group received neurofeedback treatment. The neurofeedback training lasted 3 sessions a week, 45 min. each session for 2 months. This protocol was performed in a bipolar manner at C4-CZ points. Pittsburgh Sleep Quality Index (PSQI) was used to extract sleep quality profile and OMSAT-3 and Elisa method were used to assess psychophysiological stress of participants. Covariance analysis and dependent t test were used to analyze the data. The results suggested that neurofeedback training can influence to balance stress and to improve sleep quality of athletes which greatly affects their performance.
Amir Vazinitaher; Mehdi Shahbazi; Fazlolah Bagherzadeh
Volume 3, Issue 1 , June 2011, , Pages 103-128
Abstract
Talent identification is a process through which those with the highest chance to succeed in the future will be determined. The purpose of the present study was to investigate the application of a multivariate approach in talent identification of adolescent soccer players. The research population consisted ...
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Talent identification is a process through which those with the highest chance to succeed in the future will be determined. The purpose of the present study was to investigate the application of a multivariate approach in talent identification of adolescent soccer players. The research population consisted of all soccer players in Tehran province aged between 12 and 16 years old. A battery of tests was applied to measure the psychological, technical, physiological and anthropometric factors in adolescent soccer players in two levels of elite (N=26) and sub-elite (N=35). Participants were divided into four age groups: U16, U15, U14, and U13. The OMSAT – 3 was used to evaluate the mental skills. Furthermore, technical skills were measured by six soccer skills tests of Football Association of England. Physiological measurements consisted of vertical jump, sit up, 10m sprint, 40m sprint and 280m shuttle run. Anthropometric characteristics were height, weight, body mass index, length of lower and upper leg, skin folds in four regions and body fat percentage. Statistical method to analyze the findings was MANOVA. The results showed that among four groups of factors, the physiological measures were statistically more capable of distinguishing the levels. The results of the present study showed a significant difference between elite and sub-elite soccer players in physiological, technical and psychological characteristics, but there was no significant difference in anthropometric attributes. There was a significant difference between elite and sub-elite soccer players in sit up, shuttle run, 10m sprint, 40m sprint, running with ball, turning, speed, dribbling, shooting, goal setting, relaxation, coping with stress, activation, focus, refocus and competition plan (P
