Pub Date : 1900-01-01DOI: 10.14198/JHSE.2021.16.PROC4.33
W. William
The trainer's knowledge of the kinetic rhythm well gives him an advantage in the ability to objectively evaluate the level of performance and stand on the strengths and weaknesses of that performance, Thus, it is easy for him to direct and modify the course of training to serve the level of mastery of movement technicality and improve the physical abilities of that event or sports skill by distributing the strength ratios to each part of the movement and in proportion to the importance of each part of the movement which represents the effective dynamic dimension of the movement. the kinetic rhythm ultimately means the balance of the parts of the movement in terms of the forces exerted at the specified times. The researcher used the experimental approach with a dual design using the pre-post measurement of two equivalent groups, one control and the other experimental. The researcher reached the following conclusions. The rhythm creates an optimal exchange between contraction and extension in the muscles, making the performance economical for the energy expended. The rhythm works to delay the appearance of fatigue on the players and therefore because contraction and extension help to speed up blood circulation and this means supplying the muscles with the oxygen and energy needed to perform the movement. The correct rhythm of the movement increases the level of performance and it helps the player move his body parts in the correct path of movement and the rhythm of the movement helps in identifying the parts of the movement that need a higher rate of strength.
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Pub Date : 1900-01-01DOI: 10.14198/jhse.2021.16.Proc4.40
M. De Candia, R. Carvutto, L. Galasso, M. Grimaldi
The outbreak of COVID-19 disease caused not only unprecedented concerns about public health but also critic stress-related disorders, especially in the younger population. Several studies have found a close connection between psychological stress and exercise dependence, resulting from coping strategies such as excessive perfectionism in controlling external factors, performance, controlling food intake, weight, and body image. Moderate amounts of exercise have been demonstrated to reduce psychological distress. Thus, the aim of the present study has been to analyse the relationship between psychological stress and exercise dependence symptoms in adolescent, concerning the COVID-19 period. Participants were 50 adolescents (aged 15-17) who trained twice a week for 90 minutes per session. They were randomly assigned to participate in either a highly controlled and supervised recreational physical activity program associated with theoretical lessons that were intended to provide information regarding nutritional education (EG;n = 25) or a waitlist control group (CG;n = 25). The physical activity program involved: joint mobility exercises, low-to-moderate intensity aerobic exercise, team-building activities, exercise stations, cardio workout. At baseline and after intervention programs we administered the Exercise Dependence Scale-21, a 21-items scale designed to assess exercise dependence symptoms, and the Perceived Stress Scale that measures the level at which situations in life are perceived as stressful (p < .01). The findings have suggested that after a 12-week recreational physical activity and food re-education, adolescents felt a greater sensation of psycho-physical well-being and that this phenomenon was closely linked to an improvement of the symptoms of exercise dependence.
2019冠状病毒病的爆发不仅引发了对公共卫生的前所未有的担忧，而且还引发了与压力相关的疾病，尤其是在年轻人群中。一些研究发现，心理压力与运动依赖之间存在密切联系，这种关系源于应对策略，如在控制外部因素、表现、控制食物摄入、体重和身体形象方面的过度完美主义。适量的运动已被证明可以减少心理困扰。因此，本研究的目的是分析青少年在COVID-19期间的心理压力与运动依赖症状之间的关系。参与者是50名青少年(15-17岁)，他们每周训练两次，每次训练90分钟。他们被随机分配参加一个高度控制和监督的娱乐体育活动项目，该项目与旨在提供营养教育信息的理论课相关(EG, n = 25)，或一个候补对照组(CG, n = 25)。体育活动项目包括:关节活动练习，低到中等强度的有氧运动，团队建设活动，运动站，有氧运动。在基线和干预项目之后，我们使用了运动依赖量表-21，这是一个21个项目的量表，用于评估运动依赖症状，以及感知压力量表，测量生活中被认为是压力的情况的水平(p < 0.01)。研究结果表明，经过12周的休闲体育活动和饮食再教育，青少年的身心健康程度有所提高，这一现象与运动依赖症状的改善密切相关。
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