درخت حوزه‌های تخصصی

The outbreak of war in Ukraine at the same time as the Beijing 2022 Winter Olympics once again called the world sports to engage in international military warfare. The aim of the present study was to investigate the role of sports deterrent in the prevention of international military wars. The present study was a qualitative-netnogeraphy method, which was conducted by studying various websites and social networks such as Instagram and official websites of BBC sport, CNN sport, ABC sport, Varzesh TV, Olympics and FIFA World Cup pages. The results indicated that sport sanctions of Russia categorized to personal (8) and organizational (21) concepts. Although Sports is a non-political phenomenon, it can play as a peace-making factor to decrease the political and military pressure on nations. Today, athletes, because of their billion audience on social media and messengers, have an irreplaceable impact on the public, including efforts to curb violence, aggression and incitement to war, including effective sports in promoting international peace.

Purpose: The aim of this research was the effect of 4 weeks of interval training and Inspiratory Muscle Training (IMT) on the initial recovery of respiratory muscle strength in inactive people. Method: This research was semi-experimental. The statistical sample of this research consisted of 30 healthy and inactive students of Shahrood University of Technology with an average age of 30±10 years. Subjects were randomly divided into 3 groups (IMT, Interval and Sham exercises). The parametric test of one-way analysis of variance with repeated measurement and dependent t-test with 95% confidence was used with SPSS 26 softwar. Results: Inspiratory muscle strength showed a significant increase in IMT and interval training groups (P<0.05). Also, the time to return to the initial state of respiratory muscle strength decreased significantly in all three groups (P>0.05), the largest decrease was related to the IMT and sham exercise groups, and the interval exercise group experienced a smaller decrease than the other two groups. Conclusions: It seems that IMT training is more effective than interval training in increasing the strength of respiratory muscles and improving the return to the initial state of the strength of these muscles.

Purpose: High-intensity interval training (HIIT) is an effective training method for improving the aerobic and anaerobic power of athletes; however, the role of activity volume in high-intensity interval training efficiency is still unclear. Therefore, in the present study, the effects of low- and high-volume HIIT on aerobic power, anaerobic power, and lactate response in young soccer players were compared. Method: In this study, 24 professional soccer players aged 20 to 22 who had no history of illness or taking supplements were chosen and randomly assigned to two groups of high-volume and low-volume HIIT. High-intensity interval training was completed for eight weeks. Training sessions included 5 min of warm-up, the main training phase, and cooling down. The training phase in the first week included 8 repetitions of 15 s of running with maximum power and 15 s of rest. Every week, the number of repetitions was increased by two. High-volume interval training was conducted for six sessions per week while low-volume interval training was performed for three sessions per week. After the training intervention, aerobic power was measured using the one-mile running test, and anaerobic power was evaluated using the Running-Based Anaerobic Sprint Test (RAST). Moreover, the level of blood lactate resulting from the RAST test was also measured using a lactometer. To statistical analyses repeated measure ANOVA was used. Results: Blood lactate levels were reduced by 12% (p=0.001) in the high-volume interval group and by 10% (p=0.001) in the low-volume interval group in response to exercise. In addition, statistical analysis revealed that the blood lactate levels in response to exercise after 8 weeks of training were similar in both groups. On the other hand, despite the rise in aerobic and anaerobic power in both groups, there was no significant difference in aerobic and anaerobic power between the high-volume and low-volume groups after eight weeks of interval training. Conclusions: Overall, the findings of the present research indicated that high-intensity interval training will reduce lactate and increase aerobic and anaerobic capacity, regardless of the training volume.

Psychological variables that affect mental health are divided into useful and harmful variables. Useful variables are beneficial for improving mental health and quality of life, and increasing well-being, for instance, happiness, calmness, vigor, and mental toughness. Harmful variables reduce mental health, quality, and enjoyment of life, for example, negative mood states, anxiety, and burnout. This study aimed to predict psychological burnout based on mood states and mental toughness of elite athletes with physical disabilities. Participants have included 150 athletes with physical disabilities (77women; 73men) competing at national or international Paralympic sports teams (mean age=42.34 ±7.44y, mean experience=8.38 ± 3.19 y) that were selected in the random method. Participants accomplished the Athlete Burnout Questionnaire, the 32-item Brunel Mood Scale, and the Sports Mental Toughness Questionnaire. Stepwise multiple linear regression analysis showed that happiness (moderate negative power, 51%), vigor (weak negative power, 28%), fatigue (weak positive power, 22%), mental toughness (medium negative power, 57%), and confidence (weak negative power, 29%) were able to predict the total burnout of the athletes with disabilities. These findings are essential for psychologists since developing and increasing the useful variables and inhibiting or decreasing the harmful variables for mental health can prevent sports burnout.