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EFFECTS OF PHYSICAL ACTIVITY AND EXERCISE ON IMMUNE FUNCTIONS
Views:687Physical activity and exercise are especially important in maintaining health and reducing risk of many diseases. Exercise leads to a pronounced immunomodulation by affecting the elements of innate immune system, as well as the ratio and functions of neutrophils, macrophages, natural killer cells, which are involved in the development, maintenance and elimination of inflammation. In the adaptive immune system, Th1 / Th2 balance shift toward Th2, and high-intensity training causes an increase in the proportion of regulatory T cells, as opposed to the effect of non-strenuous exercise on the Treg cell ratio. In response to exercise, there is a lack of data on B cells, but some studies have reported a decrease in immunoglobulin secretion. In our own research we observed changes in naive and memory B cell ratios. Upon exercise, IL-6, as proinflammatory cytokine, promotes T cell proliferation, activation, and differentiation of B cells into antibody-producing plasma cells. Hormonal factors play an important role in the background of immunological changes. Exercise stimulates the secretion of both adrenaline and noradrenalin, and their concentration in the blood is directly proportional to the duration of exercise. Endurance exercise is associated with increased cortisol levels, while low intensity exercise does not significantly affect cortisol levels. Exercise and physical stress can increase the concentration of endorphins by 3 to 10 times; β-endorphin inhibits T and B cell activity, thus reduces antibody production. Testosterone causes a reduction in antibodies to IL-4, IL-5, IFN-γ, Ig-M and Ig-G. Based on the above, mild to moderate physical activity contributes to the enhancement of immune reactivity and the immune response. On the other hand, strenuous exercise with increased intensity leads to a deterioration of immune function and impaired immunological defense.
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EXAMINATION OF THE PHYSICAL ACTIVITY OF THE ELDERLY DURING THE COVID-19 EPIDEMIC
Views:46Physical activity can be used for any movement/exercise involving energy expenditure. Scientific research discusses the issue of older adults' physical activity. It is a common principle that an active lifestyle positively impacts older adults' quality of life and life expectancy. During the period of the coronavirus, it was revealed in many countries that the time spent on physical activity decreased significantly due to social distancing measures. Due to the pandemic, there have been significant changes in the society's sports consumption habits. Our research aims to examine and present the changes in the physical activity of the age group above 60 before the coronavirus and during the period of restrictions and quarantines due to the COVID-19 pandemic. For the analysis, we used data examining the first three waves of the COVID-19 epidemic collected by the Physical Activity Research Group of the Faculty of Health Sciences of the University of Pécs. In the examined periods, a "U"-"-shaped trend can be observed in the development of the physical activity of the 60-69 years age group. In the pre-coronavirus period, the level and intensity of the weekly physical activity of older adults began to decrease after the introduction of the lockdowns. Then, they continued to increase during the successive epidemic waves. The average duration of physical activity (minutes/week) at the second wave and the intensity of physical activity (METs) exceeded the pre-pandemic state significantly by the time of the third wave. As physical activity started to increase in the 60-69 age group during the second and third wave of the coronavirus, it would be essential to maintain an active lifestyle in the later period as well. Physical activity benefits people of all ages and can reduce the burden on the healthcare system.
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RELATIONSHIP NETWORK CHARACTERISTICS OF SPORTS AND NON-SPORTS YOUNG ADOLESCENTS
Views:144From school onwards, children spend more and more time with their peers without direct adult supervision. In peer groups, the emphasis is on shared interests, understanding and trust, rather than joint activities. The biological changes associated with adolescent sexual maturation also lead to changes in social relationships. The topic is particularly topical now, in the wake of the COVID-19 pandemic, when opportunities for face-to- face communication have been significantly reduced, leading in many cases to a transformation of relationships.
Playing sport expands the individual's range of experience: he or she is exposed to a new social environment, has the opportunity to form new relationships, and encounters a new set of values and norms. All this shapes their personality, their individuality and has an impact on their whole life. However, many children today do not play sport regularly, partly because of the increased mental workload and demands and the resulting lack of time. In my research, I was looking for answers to the question of how regular sporting activities affect the social relationships of young adolescents. As the data from my research show, regular sporting activity has a beneficial effect on both the extension and the intensity of children's relational networks, especially for those playing team sports.
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A STUDY ON THE INCIDENCE OF GOALS AND THE RELATIONSHIP BETWEEN SCORING THE FIRST GOAL AND WINNING THE MATCH IN THE HUNGARIAN BEACH SOCCER CHAMPIONSHIP
Views:177Although beach soccer has become increasingly popular in recent years an only a minimal number of scientific research has been conducted in this area. The beach soccer is characterized by high intensity (HR max above 90 %) intermittent movements, which primarily requires the involvement of the anaerobic metabolic system. The objective of this study was: (i) to analyze the incidence of goals in the Hungarian Beach Soccer Championship in relation to the periods of the game that tend to occur; (ii) to identify the team that scored the first goal of the game, analyzing the influence of this event on the final result (iii) to identify and quantify the periods of the match won by the winner team. We examined all the goals (n = 1.065) in the Hungarian Championship (2016-2017) of beach soccer. We found that nearly 38 percent of goals are scored in the last period of the matches, the team that scores the first goal of the game features an average 74.44 percent probability of winning. We observed, that almost 24 percent of the teams, which achieved overall success also earned the 1st and 3rd periods. Thus, it is suggested that the higher incidence of goals in the 3rd period of the matches is associated mainly with the interaction of physical and psychological factors. Regarding the influence of the first goal on the final result, we assumed that the psychological factor appears to interfere with greater relevance.
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THE RELATIONSHIP BETWEEN DEMENTIA AND PHYSICAL ACTIVITY: A SYSTEMATIC REVIEW
Views:743Introduction: Many studies have already shown that, there is connection between physical actitity and cognitive functions. Therefore, the aim of our research is to examine the relationship between cognitive decline (dementia) and physical activity.
Method: The research genre was a secondary method analysis. The literature review was primarily collected from articles published on international scientific sites.
Results: A total of 11 reviews were examined, examining the relationship between dementia and physical activity, which included 217 articles. Research has supported our hypothesis, that regular exercise has a positive effect on the prevention of dementia by reducing the risk of dementia.
Conclusion: It would be worthwhile to further investigate, which types of exercise at what repetition rate and what intensity achieve the best results in reducing the risk of dementia, or slowing the process of dementia.
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THE INVOLVEMENT OF ADVANCED COGNITIVE SKILLS IN VARIOUS FOOTBALL – SPECIFIC TESTS A PILOT STUDY
Views:36Sports professionals should encourage the development of cognitive functions as often as possible in training. Stimulating the brain with alternating stimuli can promote concentration, attention, and the development of situational awareness and decision-making skills. The more and more diverse stimuli the player receives, the faster and more effectively he will react to match situations. Our research examined the effect of exercises requiring advanced cognitive skills on the training load. Changes in cardiovascular data were monitored using Polar Verity Sense 4J and Polarflow systems. The pilot study involved a U-16 football player. Our results demonstrated that in addition to increasing speed, duration, and number of repetitions, the gradual inclusion of decision-making situations can also effectively increase the load. The participant completed two sets of exercises. During the second test, more complex exercises required advanced cognitive skills. The average heart rate for the first test was 130 beats per minute. We experienced an increase in the average value (150 beats per minute) during the completion of the second test. We measured an average 15 percent increase in the participants' heart rate.
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INVESTIGATION ON THE IMMUNOLOGICAL EFFECTS OF REGULAR PHYSICAL ACTIVITY
Views:556Introduction: Effects of physical activity on immune functions may largely depend on the type of activity, its intensity and duration. However, little information is available regarding the immunological effects of sporting activities in older ages.
The aim of our study was to examine the changes in a wide spectrum of lymphocyte subtypes after a period of regular workout among healthy women of different ages.
Methods: In our study, we enrolled 16 elderly women (between ages of 60-75 years) formerly not engaged in regular physical activity, who took part in lightweight conditioning gymnastic exercise program. Eight young athletes and 26 young adults with sedentary lifestyle served as controls. The percentages of peripheral NK, NKT cells, T and B lymphocyte subtypes were determined by flow cytometry based on the staining of extracellular markers and intracellular cytokines.
Results: Lymphocyte subgroups did not differ between the groups of young athletes and young adults with sedentary lifestyle. However, in elderly women, levels of NKT cells were lower, while ratios of T helper / T cytotoxic cells were higher compared to younger individuals. At the end of exercise program, in elderly women, percentages of naive B cells decreased, while levels of switched-memory B cells increased. Furthermore, proportions of Th2 cells increased, while levels of immunosuppressive CD4+CD127-CD25bright Treg cells decreased as the result of regular exercise.
Conclusion: Differences observed after lightweight exercise programs reflect a presumably enhanced immunoreactivity and increased ability for immune responses in older ages.
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THE EXAMINATION OF JOINT TEMPERATURES AND PREVENTIVE PHYSICAL ACTIVITY AMONG PARTICIPANTS IN E-SPORT- A PILOT STUDY
Views:97Our research aimed to determine what temperature changes occur along with the spinal segments during seated exercise and in which direction these temperature values change due to a preventive exercise program. This thesis aims to develop a thermographic analysis procedure to monitor the loads generated in and along the spine of mainly e-athletes and to investigate the effect of a preventive exercise program designed by the research team on the temperature values generated by the load. During our research, we conducted a study with three university students over several months. After an acclimatization period, the research subjects performed e-sport activities in a standardized temperature room while their back temperatures were monitored. The resulting thermograms were analyzed using ImageJ free-use image analysis software. The RGB-type thermograms were converted to 8-bit color depth, and the pixel intensity of the ROI (Range of interest) areas was measured. The following ROI areas were isolated during measurements: neck (C-cervical), back (T-thoracic), lumbar (L-lumbar), and muscle groups to the left (S-sinistrum) and right (D-dextrum) of these areas. Results were obtained at five-minute intervals. Our results showed that the intervention did not produce apparent changes. In two out of three subjects, the cervical section was the hottest, followed by the thoracic and lumbar areas. In general, surfaces to the left of the spinal regions were warmer than surfaces to the right.
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KÜLÖNBÖZŐ ÉTRENDEK, DIÉTÁK HATÁSA A SPORTTELJESÍTMÉNYRE
Views:443The fuel of the human body is food, more specifically the nutrients it contains, so even non-athletes need to pay close attention to what they eat. It is even more important for athletes to develop performance-optimizing eating habits. Sport nutrition is one of the biggest opportunities for performance optimization that has become more and more important recently. There are many special diets, perhaps the best known are: ketogenic diet, Mediterranean diet, vegetarianism, paleo diet. We need to choose our diet while maintaining good health. We should not forget that a long-distance runner, for example, may need a completely different diet than a weightlifter. However, no two people are the same, individuals have different genetics, weight, body composition, movement intensity, metabolism, and the goal they want to achieve, which is why an individualized diet combination within each sport results in the best performance. In our study, we aimed to analyze the effect of diets of different compositions on sports performance based on the mentioned aspects. In the course of our work, we collected and reviewed relevant content on Google and Pubmed. Overall, it can be said that developing the right diet can be a multiplier return on investment. Sport as a physical activity determines lifestyle, including nutrition. Proper, balanced nutrition is essential for both athletes and non-athletes