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  3. The effect of 6 weeks of circular plyometric exercises on some physical fitness factors of student wrestlers in district 11 of Tehran.

The effect of 6 weeks of circular plyometric exercises on some physical fitness factors of student wrestlers in district 11 of Tehran.

Number of pages: 44 File Format: word File Code: 31663
Year: Not Specified University Degree: Master's degree Category: Physical Education - Sports
Tags/Keywords: agility - anaerobic power - Circular exercises - Muscular endurance - physical fitness - Physical fitness factors - Plyometric exercises - plyometrics - Students - The flexibility of the wrestler
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  • Summary of The effect of 6 weeks of circular plyometric exercises on some physical fitness factors of student wrestlers in district 11 of Tehran.

    Dissertation for Master's Degree

    Physical Education and Sports Sciences

    Abstract

    The purpose of this research was the effect of a plyometric circuit training course on the physical fitness factors of student wrestlers in district 11 of Tehran.

    For this purpose, 30 wrestling students from district 11 of Tehran city in the academic year of 1992-1993 were purposefully selected and randomly divided into two experimental groups (N=15) with (mean age 17.2±1.97 years, height 179.06±3.69 cm, weight 73.06±5.81 kg) and control group (N=15) with (mean age 17.26±3.57 years, height 177.6±6.74 cm, weight 72.66±5.88 kg) were divided. The working method was that first the questionnaire was completed by the subjects to obtain personal information. After that, in order to familiarize the subjects with the tests, all the steps of the test implementation and how to perform each of the tests were explained and implemented by the researcher. Then the subjects warmed up for 20 minutes and performed the tests (age, height, weight, sitting and reaching, Sargent's jump, swimming on the hand and two 9 x 4) in order to measure the factors (flexibility, anaerobic power, muscular endurance and agility) in the pre-test and the results were recorded in special sheets. Then, the experimental group performed the selected plyometric circuit training program for 6 weeks, 3 sessions per week, and each session lasted 45-60 minutes, and the control group did not perform any exercises. At the end, to collect the data after the test, both groups did the tests again. The results showed: the plyometric circuit training program has a significant effect on the anaerobic power, agility, muscular endurance and flexibility of wrestling students in the 11th district of Tehran. rtl;"> 

     

    Introduction

    The sports community is moving in the direction of becoming a champion and professional, and anyone may participate in a specific sports activity and training program for any reason and purpose, but paying attention to the issue that sports talent is one of the most important factors in achieving a high level of sports performance is also important for flourishing. This talent, coaching based on the practical principles of sports is also considered essential. Therefore, while recognizing this talent, it should be grown and developed in a correct way. Usually, sports experts believe that in order to achieve a high level of sports performance, one should develop the level of performance and preparation of people with different training methods while knowing the sport.

    Motivation and progress and achieving the peak of ability in performing skills have prompted coaches to use different training methods and ways for the success of athletes. In order to progress in any sport, along with the necessary knowledge of the principles and techniques of that sport, the athlete must have the necessary and specific physical preparation (Adibpour, 2008). To achieve this preparation, one of the training methods used by trainers is plyometric exercises. Since every athlete strives to be stronger and faster, then this type of training can be used to improve the strength and speed of athletes to increase their fitness and ability. The use of this type of training began in the 1960s, when it was used as a fast-yielding training method. These exercises are useful for achieving sports goals by using the stretching reflex mechanism and are used in many sports such as volleyball, basketball, track and field, swimming, etc. It has been used (Adibpur, 1380).

    Wrestling is one of the sports in which physical fitness is very important. So, in order to achieve a good record, the athlete must increase his level, fitness, and physical strength, which can be achieved through plyometric exercises and helps the athlete improve and develop physical fitness and win a good championship.In this research, an attempt will be made to investigate the effect of plyometric exercises on the physical fitness factors of student wrestlers as the future builders of this popular sport in our country, so that it may be possible to help athletes and coaches by obtaining information (Bompa, [1] 1982).          

    1-2- Statement of the problem

    The progress of sports science in recent years has been very impressive and physical fitness, as an important part of these advances, has not been far from diversity, change and development. Performing special exercises to achieve optimal fitness in sports fields and also in general health is of special importance. If these exercises are based on scientific research, better results will follow. Among the factors of physical fitness, power is considered an important factor in the success of athletes, and the anaerobic power of the lower limbs is an important factor in fields such as football, basketball, taekwondo, etc. In the last few decades, various methods such as weight training and speed training have been used to strengthen the anaerobic power of the lower limbs. Recently, as an effective method, plyometric exercises have attracted the attention of coaches who seek to strengthen the speed and explosive performance of athletes. Basically, the inherent characteristic of this type of training is the combination of strength and speed to produce power. By involving more muscle fibers due to the activation of muscle spindles and benefiting from the elastic feature of muscles, these exercises create different functional adaptations in muscles, the result of which is better and more coordinated muscle performance (coordination in using muscles) and creating more explosive power in action. This adaptation is more important, especially in the disciplines that require continuous jumps for a long time (Nabizadeh et al., 2013).

    Physical fitness is also a set of inherent and acquired characteristics that determine the ability to perform physical activity (Sandgol, 2013) and creating general health is the most important role that can be expected from it. Anaerobic power, agility, strength and flexibility can be mentioned among the important factors of physical fitness (Humphrey [2] et al., 1999). Most sports require short-term and fast activities with maximum power output. In fact, explosive power is a sign of the capacity and ability of the metabolic system to provide energy in the absence of oxygen. Thus, measuring this ability is very important for evaluating training programs and selecting elite athletes (Markovich [3] et al., 2007).

    Until the sixties, the design of bodybuilding exercises was limited to resistance work to increase strength or speed. After that, the aforementioned exercises were considered as a precursor to the main power exercises, i.e. plyometric exercises. In an operational definition, a plyometric movement is a fast and powerful activity that is performed using a fast stretch pre-movement that stimulates the stretch reflex. In plyometric exercises, by involving more of the natural stretchable components of the muscle (tendons) and stretch reflex, it is tried to increase the power of executive movements (Kevin et al., ). In addition, it seems that reciprocal neural inhibition also plays a role in facilitating this process (Makkaty [4] et al., 2007; Benjamin et al., 2005; Gardiner). Plyometrics are exercises that enable muscles to exert their maximum strength in the shortest possible time, and the process of the cycle of stretching and shortening muscle contraction is the main basis of this exercise (Kevin [5] et al., 2009).

    The advantage of this exercise is that it prepares the neuromuscular system and thus allows athletes to perform powerfully in activities that involve a change in direction. and quickly execute the task. By performing such exercises, the time required to change the direction is reduced and as a result, the speed and explosive power increases. Therefore, athletes who need strength in different disciplines can benefit greatly from plyometric exercises. Another advantage of these exercises is the type of movements that are very simple and easy to teach and learn (Klondi[6] et al., 2013).

    However, like endurance and resistance exercises, in plyometric exercises it is necessary to carefully design the type of movement, the number of training positions, the number of repetitions of each movement and the intensity of the load of each repetition.

  • Contents & References of The effect of 6 weeks of circular plyometric exercises on some physical fitness factors of student wrestlers in district 11 of Tehran.

    List:

    Abstract. 1

    Chapter One: General Research

    1-1- Introduction. 2

    1-2- Statement of the problem. 3

    1-3- The importance and necessity of research. 6

    1-4- research objectives. 7

    1-4-1- general goal: 7

    1-4-2- special goals. 7

    1-5- research hypotheses. 7

    1-6- research limitations. 8

    1-7- research assumptions. 8

    1-8- Functional definitions of words and terms. 8

    Chapter Two: Theoretical Foundations and Research Background

    2-1- Introduction. 10

    First part: Theoretical foundations of research: 10

    2-2- Plyometric exercises. 10

    2-3- Definition of plyometric exercises. 11

    2-4- Physiological dimensions of plyometric exercises. 11

    2-5- Stretching-contraction cycle in plyometric exercises. 12

    2-6- sensory and depth receptors. 13

    2-6-1- muscle spindles. 13

    2-6-2-Golgi tendon organs. 14

    2-7- Effects related to plyometric exercises. 14

    2-8- Classification of plyometric exercises. 14

    2-9- The principles of using plyometric exercises. 16

    2-10- Injuries caused by plyometric exercises. 17

    2-11- Anaerobic power. 17

    2-11-1- Factors affecting anaerobic capacity. 18

    2-12- Agility. 19

    2-12-1- Factors affecting agility. 20

    2-12-2- Effective factors in expanding the range of agility. 20

    2-13- Muscular endurance. 20

    2-13-1- influencing factors in muscle endurance. 21

    2-14- Flexibility. 22

    2-14-1- Factors affecting flexibility. 23

    2-14-1-1- Internal factors. 23

    2-14-1-2- External factors. 24

    2-14-1-3- Evaluation of flexibility. 25

    The second part: research background. 25

    2-15- The research done inside and outside the country 25

    2-16- Summary of the research done. 27

    Chapter Three: Research Methodology

    3-1- Introduction. 28

    3-2- Research method. 28

    3-3- Population and statistical sample. 28

    3-4- Research variables. 29

    3-4-1- independent variable. 29

    3-4-2- dependent variables. 29

    3-5- Measuring tools. 29

    3-6- Data collection method 29

    3-6-1- Height measurement method. 30

    3-6-2- Weight measurement method. 30

    3-6-3- The method of collecting data from the test of sitting and reaching the hands to the toes 31

    3-6-4- The method of collecting data from the test of running 9x4. 31

    3-6-5- The method of collecting information from Sargent's jump test. 32

    3-6-6- The method of measuring upper body muscular endurance. 32

    3-7- Statistical methods. 33

    Chapter Four: Statistical Analysis

    4-1- Statistical description of data 34

    4-2- Test of hypotheses: 35

    The first hypothesis. 35

    The second hypothesis. 36

    The third hypothesis. 37

    The fourth hypothesis. 38

    Chapter Five: Discussion and Conclusion

    5-1- Summary of the research. 39

    5-2- Discussion and conclusion. 40

    5-3- Suggestions arising from research. 41

    5-3-1 Practical suggestions. 41

    5-3-2- Research proposals. 42

    Resources. 43

    Source:

     

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The effect of 6 weeks of circular plyometric exercises on some physical fitness factors of student wrestlers in district 11 of Tehran.
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