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Open Access Article
1 - The effect of caffeine consumption on some factors of physical fitness and skills of young footballers
pourya pazouki Abdolrasoul DaneshjooBackground: Caffeine is a supplement that is not yet fully effective in specific football training styles. The purpose of this study was to determine the effect of caffeine consumption on some of the physical fitness and skill factors of young footballers. Materials MoreBackground: Caffeine is a supplement that is not yet fully effective in specific football training styles. The purpose of this study was to determine the effect of caffeine consumption on some of the physical fitness and skill factors of young footballers. Materials and Methods: The research method is quasi-experimental and the participants of this study were 30 football players aged 16-18 years who were randomly selected and randomly assigned to one of the three groups of caffeine consumption, placebo use and control (30 = n). The variables of lower limb strength, agility, speed, maximum oxygen consumption and pass, shoot and dribble football skills were considered as dependent variables in pre-test and post-test of all participants. Data were classified by descriptive indices of mean and standard deviation and data analysis was performed using repeated measures analysis of variance test using SPSS-23 software at a significance level of P <0.05. Results: The results of statistical test showed that between the average lower limb strength (sig = 0.001), maximum oxygen consumption (sig = 0.001), speed (sig = 0.001) and agility (sig = 0.002) There is a statistically significant difference in the caffeine group with the other two groups from the pre-test to the post-test, but there is no statistically significant difference between the control and placebo groups. The results also showed that there was a statistically significant difference between the mean performance of shot, pass and dribble football in the caffeine group with the other two groups from the pre-test to post-test (sig = 0.001), but between the control and placebo groups. There is no statistically significant difference. Conclusion: Based on the results of the present study, caffeine consumption can have a positive effect on the physical fitness and technical skills of young footballers. Therefore, football coaches are advised to use caffeinated beverages before training to improve their footballers' physical and skill factors. Manuscript profile -
Open Access Article
2 - Neuromuscular Electrical Stimulation in Muscular Adaptations in Exercise: A Narrative Review
Daniel TarmastNowadays, sports science uses scientific methods and medical devices to assist people with any improvements in sports. Muscle adaptations have significantly benefited as a result of the use of these advanced devices. It has been shown that neuromuscular electrical stimu MoreNowadays, sports science uses scientific methods and medical devices to assist people with any improvements in sports. Muscle adaptations have significantly benefited as a result of the use of these advanced devices. It has been shown that neuromuscular electrical stimulation (NMES) devices effectively improve muscle function. The use of NMES devices in exercise physiology shows that neuromuscular adaptation is a current research area in both athletes and non-athletes. This narrative review aims to address neuromuscular adaptations and describe neuromuscular changes based on research using NMES. Many researchers and sports trainers will benefit from the results of this article by better understanding neuromuscular adaptations. NMES training has been shown to be an effective way to improve muscle growth, maximum voluntary strength, neuronal drive, oxidative metabolism, and antioxidant defense systems. In addition, NMES is capable of regulating the homeostasis of muscle proteins and increasing oxidative enzyme activity. In animal models, it has also been shown to increase axonal outgrowth, fiber reinnervation, and motor axon regeneration. Various NMES methods may decrease age-related muscle atrophy and functional deterioration. The use of NMES, which is one of the most successful strategies for increasing athletic performance through neuromuscular adaptations, is one of the most promising areas of research. Manuscript profile -
Open Access Article
3 - The Role of Conscious Control Propensity in Determining the Effects of Attentional Foci instructions
Mohammad Tollabi Elaheh Arab Ameri Mehdi Shahbazi Alireza Babaei Mazreno Fatemeh Sadat TabatabaeiBackground: In this research, we investigated the role of conscious control propensity in determining the effects of attentional foci on performance and learning of basketball accuracy pass in children (10-12 years old). Materials and Methods: To determine the children MoreBackground: In this research, we investigated the role of conscious control propensity in determining the effects of attentional foci on performance and learning of basketball accuracy pass in children (10-12 years old). Materials and Methods: To determine the children’s conscious control propensity, the Movement Specific Reinvestment Scale was used. Seventy-two children in two high and low conscious control groups that each group divided to three sub-groups (internal, external, and control) entered the acquisition and transfer and retention tests in the basketball accuracy pass task. Results: The results showed that during the acquisition period, low and high conscious control propensity did not have any effect. Though there was a significant interaction between conscious control propensity and attentional foci in transfer and retention tests, but the main effects were not significant. Conclusion: Based on these results, children's motor learning is more effective when the instructions for attentional foci suited their natural tendencies. Manuscript profile -
Open Access Article
4 - Investigation of the Level of Consumption and the Effects of Sports Supplements on the Satisfaction and Performance Quality of Bodybuilding Athletes
Mohamad Ilanloo Alireza Eizadi Behzad DivkanBackground: The use of different kinds of dietary supplements is rising dramatically on a global scale these days. These substances include multifunctional performance-enhancing supplements, herbal supplements, and everyday vitamins. The main objective of this research MoreBackground: The use of different kinds of dietary supplements is rising dramatically on a global scale these days. These substances include multifunctional performance-enhancing supplements, herbal supplements, and everyday vitamins. The main objective of this research is to find out how bodybuilding athletes' performance quality, muscle efficiency, and degree of satisfaction are affected by sports supplements. Materials and Methods: This study used a survey approach conducted in the field using a standardized questionnaire in conjunction with a descriptive-analytical research design. The study's statistical population included 131 participants who were among the top ten bodybuilding competitors at national championships. For statistical analysis, Friedman and linear regression tests were used after the data was collected. Results: The study results suggest that the majority of respondents concur that the use of sports supplements directly affects the functioning of body muscles. Moreover, the prolonged use of supplements that enhance weight and muscle volume has an increased effect on the performance of these athletes. The benefits of sports supplements are particularly noticeable throughout the second to fourth years of training for bodybuilding athletes as they continue to use these supplements. Conclusion: Evidence suggests that sports supplements have a discernible influence on muscle efficiency and the performance of bodybuilding athletes. Nevertheless, the use of sports supplements does not have a substantial impact on athlete satisfaction. Manuscript profile
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