تهدف هذه الدراسة إلى التعرف على تأثير المؤشرات الفسيولوجية على أداء الرياضيين في العاب المضرب (التنس، الريشة الطائرة، وتنس الطاولة)، مع التركيز على الجوانب المتعلقة بنظام الطاقة، الجهاز التنفسي، الدورة الدموية، والجهاز العصبي. تعتمد هذه الألعاب بشكل كبير على التوافق بين الأنظمة الفسيولوجية المختلفة لتحقيق الأداء الأمثل في التنس،بعبارة اخرى "التوافق بين الأنظمة الفسيولوجية المختلفة لتحقيق الأداء الأمثل في التنس" تشير إلى كيفية تفاعل وتكامل الأنظمة البيولوجية أو الفسيولوجية داخل جسم الإنسان لمساعدة اللاعب على الأداء بشكل متميز في رياضة التنس. وبالتالي في رياضة التنس يجب أن تعمل كل الأنظمة الفسيولوجية في الجسم بإنسجام كبير حتى يستطيع الاعب الأداء بمستوى عالٍ من الكفاءة والدقة والسرعة. يعتمد الأداء المهاري على التحمل العضلي، والقوة الانفجارية، والقدرة على إدارة الإجهاد الحراري والنفسي، حيث يتم استخدام أنظمة الطاقة الثلاثة (الفوسفاجين، حمض اللاكتيك، والأكسجين) بدرجات متفاوتة حسب شدة النشاط ومدته. لانها تشرح أحد المؤشرات الفسيولوجية الأساسية التي تؤثر على الأداء المهاري في ألعاب المضرب، وتشير أيضا الى اعتماد التدريب على فهم هذه الآليات البيولوجية لتطوير مستوى اللاعبين. حيث أن نظام الفوسفاجين يوفر الطاقة بسرعة لفترات قصيرة جدًا وهو ضروري لتنفيذ الضربات القوية مثل الإرسال أو الضربات السريعة، بينما يُستخدم نظام حمض اللاكتيك خلال النقاط الطويلة التي تتطلب مجهودًا عاليًا لفترة متوسطة. أما نظام الأكسجين فيلعب دورًا أساسيًا في توفير الطاقة المستدامة خلال المباريات الطويلة. في الريشة الطائرة، تتميز الرياضة بالسرعة العالية والحركات السريعة التي تتطلب كفاءة عالية في التنفس والتنسيق العصبي العضلي لتحقيق الدقة والسرعة في الضربات. كما أن التحمل القلبي التنفسي مهم لضمان استمرارية الأداء خلال المباريات الطويلة. أما في تنس الطاولة، فإن الأداء المهاري يعتمد بشكل كبير على السرعة والتركيز العقلي العالي، حيث تحتاج الحركات السريعة والضربات الدقيقة إلى تفعيل الجهاز العصبي بشكل فعال، بالإضافة إلى التحمل العضلي خاصة في الذراعين والمعصمين. الجهاز التنفسي يلعب دورًا حاسمًا في توفير الأكسجين اللازم للعضلات، بينما الجهاز الدوري يساهم في نقل المواد الغذائية وإزالة الفضلات. الإجهاد العضلي الناتج عن تراكم حمض اللاكتيك والإجهاد العصبي بسبب الضغوط النفسية يمكن أن يؤثران سلبًا على الأداء. لتحسين الأداء، يجب التركيز على برامج تدريبية متخصصة تعزز كفاءة الأنظمة الفسيولوجية، بالإضافة إلى اتباع استراتيجيات تغذية سليمة تشمل الكربوهيدرات للطاقة والبروتينات لإصلاح العضلات. كما أن الراحة الكافية والاستشفاء ضروريان لاستعادة التوازن الفسيولوجي. هدف البحث هو تسليط الضوء على الدراسات التي تناولت المؤشرات الفسيولوجية والأداء المهاري للرياضيين في في العاب المضرب وتقديم توصيات عملية لتحسين الأداء المهاري من خلال تحسين كفاءة هذه المؤثرات. من خلال فهم كيفية عمل هذه المؤثرات، يمكن للرياضيين والمدربين وضع استراتيجيات تدريبية وتغذوية فعالة لتعزيز الأداء الرياضي وتحقيق النجاح في المنافسات. توضح هذه الدراسة أهمية المؤشراتالفسيولوجية في تحسين الأداء، مما يجعلها مجالًا غنيًا للبحث والتطوير المستمر في عالم الرياضة.
The research aims to shed light on the nature of the tax gap in the income tax by the method of direct deduction and its reflection on the financial objective of the tax, and to determine the reasons for this gap in the deduction between the tax due in accordance with the laws and instructions in force and the tax actually paid. The tax gap is a real problem that cannot be ignored for what it represents loss of financial revenues due to the state.
The research problem is represented in the existence of a gap between the tax due according to direct deduction instructions and the tax actually paid according to the financial statements, and to achieve the objectives of the research and test the hypotheses, t
... Show MoreIt aim current researchs֬ to identify the impact of a proposed strategy in accordance with the objectives of science in the achievement and some science processes, where the experimental method was adopted, and define the research community was students second grade averag in Education Bagdad / Rusafa third, research sample intentionally chosen as school Radwan, and (30) students experimental group and (29) of control group, research tools were achievement test and the test of science operations and use the appropriate statistical tools to process information and data, showing results, the experimental group surpassed the control group in the collection and operations science, and light it, the researcher recommended several recommendat
... Show MoreThe research aims to measure the impact of managerial ability on income persistence for the industrial sector companies listed in the Iraqi Stock Exchange. The managers of these companies have managerial ability that may have an impact on achieving their objectives, setting their future policies and investing opportunities. Which may be reflected in many areas, including the level of profitability achieved and the possibility of continuity or sustainability? A model was used to measure managerial ability as well as a model to measure the income persistence in order to determine the relationship between them, The researchers found the absence of a statistically significant between managerial ability and the income persistence, which requi
... Show MoreObjectives: To determine the effectiveness of the educational program on nursing staff knowledge about infection control measures at the Intensive Care Unit in Al-Diwaniya Teaching Hospital.
Methodology: A pre-experimental design (one group design: pre-test and post-test) was used. This study was conducted in Al-Diwaniya Teaching Hospital for the period from ( 20th February to 5th March, 2020) on a non-probability (purposive) sample consisting of (25 nurses) working in ICU. A questionnaire was built as a data collection tool and consisted of two parts:
First part: The demographic characteristics of the nursing staff (age, gender, level of education, years of experien
... Show MoreThe research aimed at identifying the effect of the think, pair, and share strategy by using educational movies on learning jumping opened legs and closed legs skills on vault in artistic gymnastics for women. It also aimed at identifying the group that learned better the skills understudy. The researcher used the experimental method on second-grade College of Physical Education and Sport Sciences female students. Twelve female students were selected from each of the two sections to form the subjects of the study. The main program was applied for eight weeks with one learning session per week. The data was collected and treated using SPSS to conclude that the think, pair, and share strategy and the traditional program have positive effects
... Show MoreThe aim of the study was to identify the use of the strategies of numbered heads and brainstorming in learning handspring on the Vault table in artistic gymnastics for Men for the third grade students in the collage of Physical Education and Sport Sciences, as well as to identify the best group among the three research groups (number of heads numbered,, brainstorming strategies And the traditional style group) to learn the skill under study. Using the experimental method, the research subject included the third grade students in the collage of Physical Education and Sports Sciences / University of Baghdad, and randomly by lot, 12 students were selected for each of the three research groups. The study consisted of the arithmetic mean
... Show MoreThe current study included, studying the ability of eight genera of plants belong to Brassicaceae family, Brassica tournifortii, Cakile Arabica, Capsella bursa – pastoris,Carrichtera annua, Diplotaxis acris, Diplotaxis haru , Eruca sativa and Erucaria hispanica to accumulate ten heavy metals Cadmium, Chromium , Copper, Mercury, Manganese ,Nickel ,Lead ,and Zinc . Plant leaves samples were collected from Al-Tib area during spring of 2021.The data demonstrated that, the highest conc. of Cd was 2.7 mg/kg in Diplotaxis acris leaves and lower value was 0.3 mg/kg in Cakile Arabica leaves. For Co, the highest conc.was 1.3 mg/kg in Capsella bursa – pastoris leaves, whereas the lower value was 0.5 mg/kg in Cakile arabica leaves. As for Cr ele
... Show MoreA factorial experiment was applied with four replicates on rosemary plants (Rosmarinus officinalis L.) grown in pots inside the glasshouse of the Department of Biology, College of Science, Salahaddin University, Erbil, Iraq, during April, 2019 to July, 2020, to determine the effects of soil moisture content ( SM1: 100% and SM2: 60% field capacity), nitrogen fertilizer (N1: 100, N2: 200 and N3: 300kg/hectare), and magnesium fertilizer (Mg1: 0.0, Mg2: 30 and Mg3: 60kg/hectare) and their interactions on some growth characteristics and essential oil content of rosemary plants. Two cuttings were taken from rosemary shoots (on March, 2020 and July, 2020) after 12 and 15 months of planting respectively. Results showed that cutting 1:
... Show MoreThe current study is descriptive; it focuses on studying the contemporary geopolitical problem, and sectarian differences in Caucasus. Nagorno-Karabakh is considered an important disputed region nowadays. Many parties and states participated in this dispute, especially after the conflict had developed into an open war between Armenia and Azerbaijan. Thus, the study aims to examine the causes of the conflict in this region, analyze the international positions on this conflict, and find if Armenia was able to occupy this region. The methodology adopted by the researchers is the functional approach, and the theory of power analysis that Cohen created for analyzing all strengths that drove each of the parties t
... Show MoreThe rental activity receives "significant" interest from accounting organizations interested in issuing accounting standards worldwide, such as the Financial Accounting Standards Board (FASB), the International Accounting Standards Board (IASB). As leases represents an important source of finance for economic units as an alternative to financing assets through purchase or borrowing. Professional organizations have focused on addressing the situation of extra-budgetary funding through which the lessee hides many leases that are classified as financing without It shows in the budget, which gives an incorrect picture of the reality of the financial situation of economic unity, IASB has issued IFRS 16, which terminates off- Balance s
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