Effect of Plyometric Training Program on Explosive Strength of Male Volleyball Players.

 

1) Prof.Bhujbal makarand Arvind - (Director of Physical Education & Sports,

Sou.Suvarnalata Gandhi Mahavidyalaya,Vairag,Dist-Solapur,Maharashatra, India.)

Email-bhujbalma5@gmail.com, MB-9822274021.

2) Dr.Bharat Nivrutti Gapat - (Professor, Director of Physical Education & Sports,

S.M.D.Mohekar Mahavidyalaya, Kallam.Dist- Osmanabad, Maharashatra, India)

Email-bharatgapat@gmail.com, MB-9881535717.

3)Dr.Dattaprasad Manohar Sontakke – *Author for Corresponding* (Director of Physical Education & Sports,B.P. Sulakhe Commerce College, Barshi.Dist-Solapur,Maharashatra, India.) Email-sontakkedm@gmail.com, MB-9922355420.

 

 

                                                           Abstract

Volleyball is considered a very explosive and quick paced sport .The Purpose of this Research Paper was to find out the effect of Plyometric training on Explosive Strength (Vertical) of Male Volleyball Players. It was an Experimental Study in which Pre-test and Pro-test Design of Experimental and Control groups was used. Sample ( 24 ) were selected purposively from Shree.Shivaji Shikshan Prasarak Mandle’s, Barshi.The Experimental Group was subjected to the plyometric training for alternative days in one month, plyometric training is as independent variable and explosive strength is an dependent variable,Running Both Leg Vertical Jump Test was conducted to both groups before and after with a unit of measurerment is in Centimeters.The Data were collected from each subject of training period, obtained data was analyzed by using descriptive and inferential statastics, using sample ‘t’ test . It was found that there was a significant improvement and different,Results shows that the plyometric training was useful to improve vertical explosive strength performance.It was further concluded that experimental group score was superior to control group Score , which statistically significant at 0.05 level.

 

Key Words: Plyometric Training,Vertical Explosive Strength, Running Both Leg Jump

 

Introduction –

 Volleyball is an intense anaerobic sport that combines explosive movements with short periods of recovery. Explosive strength, which is de?ned as the ability of an individual’s neuro-muscular system to manifest strain in the shortest possible time is considered a fundamental aspect of successful athletic performance In fact, when speed and agility are combined with maximum strength, power is the outcome, Muscular power enables a given muscle to produce the same amount of work in less time, or a greater magnitude of work in the same time, which is important for sprinting, jumping and quick changes of direction ,Indeed, studies have shown strong relationships between power measures and Running both leg vertical jump performance suggesting that power in?uences vertical jumping performance. A vertical jump is a complex movement that requires the co-ordination of several muscles in the trunk, arms and legs. Knowing that each player performs more than minimum 90 jumps in a volleyball match of three sets jumping ability has been identi?ed as one of the key determining factors of high performance in volleyball In fact, several studies have shown that vertical jump test results are indicative of the performance level of an athlete For example, Smith found that vertical jump performance during spiking and blocking was greater in Canadian national volleyball players compared to the Canadian university volleyball players Jump training is commonly associated with plyometric training According to the concept of training speci?city, the e↵ective transfer of training adaptations occurs when the training exercises match the task competition; In volleyball, Plyometric training involves jumping, hopping and bounding exercises as well as throws that are performed quickly and explosively Although plyometric training has been widely used in volleyball, little scienti?c information is available to determine its possible bene?ts on the di↵erent components of performance.

 

Statement of the Problem –

The purpose of the study was to identify the effect of plyometric training on explosive strength of male volleyball players.

 

Significance of the study – 

1. This study will help to develop the volleyball skills

2.  Improved fitness level will indirectly help subjects to avoid injuries.

3. This study will help to improve the fitness of the subjects.

4. It will help them to gain better knowledge about their training programme.

 

Hypothesis –

 

 It was hypothesized that there would be significant improvement on explosive strength of male volleyball players due to the influence of Plyometric training of volleyball players.

Objectives of Study –

 

1. To prepare and implement the designed plyometric training on experimental group
2.  To measure the explosive strength of male volleyball players with running both leg vertical jump test.

      3)   To study the effect of Plyometric training program after implementing program.

      4)   To evaluate the effect of Plyometric training program in sports performance.

 

Delimitations –

 

1. The study was confined to 24 players from Shree. Shivaji Shikshan Prasarak Mandles, Barshi.

2. The age of the subjects ranged from 17-21 years.

3. The training was restricted to one month’s alternate days.

Limitations –

 

1. In this study the possible effect of the diet, sleep and habits of the subjects were ignored.

2. Hereditary factors which may have some influence the result of this study could not be controlled.

3. Socio economic background of the subjects was not taken into consideration. 

Plyometrics –

 

Plyometrics is a method of developing explosive power. It is also an important component of most athletic performances. As coaches and athletes have recognized the improvements plyometrics can bring to performance, they have integrated it into overall training programs in many sports and made it a significant factor in planning the scope of athletic development.

Explosive strength –

 

Explosive strength is the quality of strength produced very quickly, but not necessarily relating to speed of movement. Explosive strength is the ability to reach absolute peak force as fast as possible.

 

Method of Study

This study was an experimental research which was conducted to find out the effect of plyometric training program on explosive strength of volleyball players.

Sampling

1) Population - All the boys age between 17 to 21 years of Volleyball players from

Shree Shivaji Shikshan Prasarak Mandle Barshi.

2) Sample - The sample of 24 players was selected with purposive Sampling method,

Further these were divided into two groups, experimental group and control group.

Design of the study

Selection of particular design was based on purpose experiment, sample was selected

purposively. There was two groups one was experimental and another was control group the Pre-test and Post-test would be conducted on each group. The type of research design was pre-test and post-test equivalent group design.

R

1 X 2 R 3 C 4

Where,

R - Random selection

1 - Pre-test of group 1 (experimental)

X - Treatment or program

2 - Post-test of group 1 (experimental)

R - Random selection

3 Pre-test of group 2 (control)

C - Control group

4 - Post-test of group 2 (control)

 

Testing Tools -

Running Both Leg Vertical Jump -

This two foot take off running vertical jump test is a variation of the standing vertical jump, and similar to the running one leg take-off VJ test used for Aussie Rules Football. This test is appropriate for basketball and volleyball players as it replicates actions in the game. There is also the Max Touch basketball leap test, which does not specify single or double leg takeoff. These tests are best conducted using the vertec equipment.

Equipment:  Vertex, Measuring Tape          

Procedure: Subject by getting thento stand directly below the apparatus with both feet flat on the ground, and then stretch up one arm and reach as high as possible. The subject should aim to take off short of the apparatus,so that at the peak of the jump they are directly under it. The best of three attempts is recorded.

Scoring: The difference in measurement between the standing reach height and the jump height reachedis the score.It is also possible to convert jump height into a power or work score

Data Analysis and Results

Present research deals with the, effect of Plyometric training program on explosive strength revealing the nature of the research design; the data collected was analyzed using the descriptive statistics. Mean, standard deviation and standard error of mean and using compare mean, Paired Sample‘t’ test, Independent Sample ‘t’ test With the help of SPSS. (17.00)

The obtained data were presented in following tables which represents the results and descriptive analysis, correlation and comparison and using‘t’ test.

 

Table no.4.1 Descriptive Statistics Pre-test & Post-test of Experimental and Control group
Group		Mean	N	Std. Deviation	Std. Error Mean
E.G.	Pretest	33.3800	12	5.14076	1.32734
	Posttest	36.1600	12	5.60048	1.44604
C.G.	Pretest	31.8067	12	5.73691	1.48126
	Posttest	31.9000	12	5.59566	1.44479

 

In table 4.1 show mean performance of 24 subjects in the pre-test and post-test of experiment group was 33.3800(+5.14076) and 36.1600(+5.60048) respectively. In control group mean performance of pre-test and post-test was 31.80067(+5.73091) and 31.900(+5.59566) respectively.

Table No. 4.2 Paired Samples Correlations
	Group	N	Correlation	Sig.
E.G.	Pretest & posttest	12	.975	.000
C.G.	Pretest & posttest	12	.986	.000

 

In table 4.2 shows coefficient of correction between pre-test and post-test was of experimental group was 0.975 which was statistically significant at 0.05, significant levels and coefficient correlation between pre-test and post-test of control group was 0.986 which was also significant at 0.05 level.

 

 

Table No. 4.3 Group Statistics Change in performance
Group	N	Mean	Std. deviation	Std. Error Mean
experimental	12	2.78	1.27571	0.32939
control	12	0.0933	0.95877	0.24755

 

From Table No. 4.3 shows that improvement in score of experiment group was 2.7800 (+1.27571) and improvement in score of control group was 0.0933 (+0.95877). This indicates that there was better improvement in experimental group.

Conclusions             

On the basis of the results obtained in this study the researcher made the conclusion that the one month Plyometric training program had significant effect on explosive strength of male volleyball players.

Recommendations

 Based on the results, this study recommends that -

I) The researcher suggested to coaches and teachers that plyometric training program is beneficial to improve strength.

II) The researcher suggested that one month time is not enough to improve the skills of the volleyball players.

III) The researcher has completed his research works only on college level also can be done on other school level, West Zone level and All India level volleyball players.

IV) Researcher also suggests that apply the plyometric training program on other ball games and find out the significant effects.

 

References

W. John, and khan J.V. (2006) Research in education (10"ed) Pearson practice Hall byPearson education.

Thomas J. Silverman S. and Nelson J. (2001). Research method in physical activity(4"ed) U.S.A. Human kinetics.

Siedentop D. (2001), Introduction to the physical education, fitness and Sports (4" ed.)McGraw Hill, California.

Kansal D.K.(2008). Applied measurement evaluation and sport selection.DVSpublication New Delhi.

Patil S. (2010) effect of six weeks mixed cross training on speed and explosive strengthof junior level male sprinters. Unpublished Dissertation University of pune, Pune.

Mahta M. (2010) effect of eight weeks polymeric training program on vertical jump, Layup Jump and Anaerobic leg power in female basketball players.Unpublisheddissertation, University and pune, Pune.

Shirke S. (2011) effect of presentation teaching and co-operative learning methods onA Sana performance il yoga.Unpublished dissertation, University of pune, Pune.

Roy K. (2011) effect of six weeks concentration training program on dribbling and goalshooting ability of male score players.Unpublished dissertation, University of pune,Pune.

Wilson G.J. Morphy A.J. Giorgi A. (1996) Weight and polymeric training effects oneccentric and concentric force production, Journal of Applied physiology 24,301-315.

Robbert M.F. Hujing P.A. (2004) polymeric training and its effects on reaction time inathletic. Journal of applied physiology 32.339-346.

Blakey J. band D. Southard P (1987). The combined effects of Weight training and polymeric leg strength and leg power Journal of applied sports Science research1:14-16.