Effect of double leg bound exercise on explosive capability of leg muscle power in the UnmuS volleyball men's team

Abstract

The study aimed to determine the effect of double leg bound training on the explosive ability of limb muscle power on the unmus volleyball men's team. The type of this research is the type of experimental research with this type of research design is the preetest posttest one group design. The population of this study was the Unmus men's volleyball team, which numbered 20 people. The sample of this study was 20 people using a total sampling technique. Explosive Power of leg muscles was measured by vertical jump test with pretest before and poststest after giving training, then the data were analyzed by independent t-test at a significance level (a) of 0.05 with the help of SPSS 22 program. Based on the results of the t test conducted with the SPPS program 22 produces tcount of 3.536 with t table 1.729 at a significant level of 0.05. Means t count> t table, thus the formulation of the hypothesis is that there is the Effect of Double Leg Bound Exercises on the ability of Explosive Power of Leg Muscles in the Unmus Volleyball Men's Team. From the results of the study, it was concluded that there was a significant effect between double leg bound training on the explosive ability of limb muscle power on the unmus men's volleyball team. For sports coaches, especially the coach of the Unmus volleyball team can use the method of double leg bound training as one type of exercise to increase the ability of the leg muscles in addition to other types of plyometric exercises. For penjasorkes teachers and athletes and sports people, it is recommended to do double leg bound training because it can increase jumps.

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International Journal of Mechanical Engineering and Technology (IJMET)
Volume 10, Issue 02, February 2019, pp.1453–1460, Article ID: IJMET_10_02_151
Available online at http://www.iaeme.com/ijmet/issues.asp?JType=IJMET&VType=10&IType=02
ISSN Print: 0976-6340 and ISSN Online: 0976-6359
© IAEME Publication Scopus Indexed
EFFECT OF DOUBLE LEG BOUND EXERCISE
ON EXPLOSIVE CAPABILITY OF LEG MUSCLE
POWER IN THE UNMUS VOLLEYBALL MEN'S
TEAM
Hendra Jondry Hiskya and Carolus Wasa
Department of Health and Recreation Physical Education, Faculty of Teacher Training and
Education, Universitas Musamus, Merauke, Indonesia
ABSTRACT
The study aimed to determine the effect of double leg bound training on the explosive
ability of limb muscle power on the unmus volleyball men's team. The type of this research
is the type of experimental research with this type of research design is the preetest
posttest one group design. The population of this study was the Unmus men's volleyball
team, which numbered 20 people. The sample of this study was 20 people using a total
sampling technique. Explosive Power of leg muscles was measured by vertical jump test
with pretest before and poststest after giving training, then the data were analyzed by
independent t-test at a significance level (a) of 0.05 with the help of SPSS 22 program.
Based on the results of the t test conducted with the SPPS program 22 produces tcount of
3.536 with t table 1.729 at a significant level of 0.05. Means t count> t table, thus the
formulation of the hypothesis is that there is the Effect of Double Leg Bound Exercises on
the ability of Explosive Power of Leg Muscles in the Unmus Volleyball Men's Team. From
the results of the study, it was concluded that there was a significant effect between double
leg bound training on the explosive ability of limb muscle power on the unmus men's
volleyball team. For sports coaches, especially the coach of the Unmus volleyball team
can use the method of double leg bound training as one type of exercise to increase the
ability of the leg muscles in addition to other types of plyometric exercises. For
penjasorkes teachers and athletes and sports people, it is recommended to do double leg
bound training because it can increase jumps.
Keywords: Exercise, Double Leg Bound, Eksplosif Power, Vertikal Jump
Cite this Article: Hendra Jondry Hiskya and Carolus Wasa, Effect of Double Leg Bound
Exercise on Explosive Capability of Leg Muscle Power in the Unmus Volleyball Men's
Team, International Journal of Mechanical Engineering and Technology, 10(02), 2019,
pp. 1453–1460
http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=10&IType=02

Effect of Double Leg Bound Exercise on Explosive Capability of Leg Muscle Power in the
Unmus Volleyball Men's Team
http://www.iaeme.com/IJMET/index.asp 1454 editor@iaeme.com
1. INTRODUCTION
Exercise is a form of movement to carry out and process the body and to have an effect on the
body as a whole. Exercising is very helpful and stimulates the muscles and other body parts to be
able to move freely. With the very importance of exercising for the body, our bodies will be
trained to keep moving / working.
Likewise, with our bodies lacking in exercise, if we lack movement, the body will become
problematic and unhealthy. By exercising also not only muscles are trained, blood circulation and
oxygen in the body becomes smooth so that the body's metabolism becomes optimal. The body
will feel fresh and the brain as a nerve center will work better. Therefore, our bodies need to be
given structured training.
Achievements achieved by an athlete are not just a coincidence, but because they have gone
through several stages of training. In the world of sports achievement, one of them is volleyball,
the process of training is a unique and risky activity, because the object of training is humans
which is a totality of complex psycho-physical systems and unstable human conditions.
One sport that needs to be considered is volleyball. Volleyball is a complex game that is not
easy for everyone to do. Because, in the game of volleyball it takes motion coordination that
really can be relied upon to do all the movements that are in the game of volleyball (Ahmadi,
2007: 20).
From the results of observations, it was found that unmus male volleyball players have not
been able to jump properly. Errors that often occur when a smash ball can be done whether it's a
smash open or other type of smash is not maximized so the ball often bounces on the net and the
ball often comes out on the line and makes the team lose important points. This lack of vertical
jump athletes' ability makes one of the weaknesses of the team. Based on these facts the
researchers wanted to conduct a study on "The Effect of Double Leg Bound Exercises on
Explosive Capability of Leg Muscle Power in the Unmus Volleyball Men's Team". The
formulation of the problem taken from this research is is there any effect of the Double Leg Bound
Exercise on Explosive Ability in the Power of Leg Muscles in the Unmus Volleyball Men's
Team?.
Exercise is a process that is carried out consciously to carry out physical activities with the
aim of improving systematic achievements carried out throughout the year with the right methods
and clear targets (Hidayat, 2014: 2). Furthermore, according to Hidayat (2014: 3) the general
objectives of the exercise include:
a) Multilateral physical
b) Physical specifically in accordance with sports
c) Sports technique
d) Tactics / strategies needed
e) Quality of competition readiness
f) Optimal preparation for team sports
g) Health condition of athletes
h) Knowledge of athletes
In carrying out the process of developing good sports performance must have the ability and
willingness that can improve good training activities. The process of sports training is a process
that is followed by athletes and guided by trainers who are supported by facilities and
infrastructure (Hidayat, 2014: 2).
In volleyball games to be able to obtain maximum achievement there are also many
influencing factors namely strength, agility, reaction speed, and flexibility, besides mastering the

Hendra Jondry Hiskya and Carolus Wasa
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basic techniques of volleyball playing is one of the elements that determine the team's win or lose
the match besides the elements of physical, tactical and mental conditions. While the technique
is a way to do or implement something to achieve certain goals efficiently and effectively
(Muhajir, 2003: 19). Likewise in volleyball that technique is a way to play the ball efficiently and
effectively in accordance with the rules of the applicable volleyball game to achieve optimal
results.
According to Anggun in Bompa (1994: 19) that Plyometrics is one exercise that has a special
characteristic that is strong muscle contraction so that it is a response to dynamic loading or rapid
stimulation of visible muscles. Whereas according to Marwanto (2013: 4) explained that
plyometric training is a training method to increase muscle explosive power in the form of a
combination of isometric and isotonic (eccentric-concentric) exercises that use dynamic loading.
According to Hanafi (2010: 5) explains that pliometric training is a training method for
developing explosive power, an important component for most muscle appearance.
One of the physical components that really helps athletes to play volleyball well is the power
of the limbs. The limbs are the lower limbs covering the limbs and pelvis and the joints and
muscles. The legs are formed by the upper bones or thighs (os femoris / femur), while the lower
limbs consist of the shin (os Tibia) and calves and leg bones, while the pelvic bracelet is formed
by coksea with the sacrum bone, there are two joints in the pelvic bracelet, namely: hip joints and
joints of the genitals, the pelvic bracelet has a strong relationship with the trunk of the body
according to its physiology as a tool that must accept weight and pass it on to both legs only in
this study the legs must have good strength in order to defend themselves. The limbs are the same
as the legs starting from the groin down to the soles of the feet, which are the lower limbs, the
entire leg is added to the pelvis.
The knee is the largest joint of the human body and although relatively strong, it is usually
prone to injury due to the complex physical arrangement of the knee because it often experiences
excessive pressure during physical activities such as volleyball. When making a jumping leg,
bend it can make a higher jump with the help of repulsion from the bottom that uses the base as
a foothold. Furthermore, according to Giriwijoyo (2012: 234), said that the physical endurance
of athletes must be maintained so that fatigue does not occur. According to him physical
endurance consists of:
1. Biological physical resistance:
Physical / physical abilities to fight and overcome various environmental threats that
tend to cause physical damage or diseases both infectious and non-infectious.
2. Functional physical resistance:
Physical / physical abilities to fight and overcome physical / physical burdens or tasks
that will cause fatigue.
Strength is very important for all sports that require strength to jump for both male and female
athletes. Muscle fibers that are in the muscle will give a response or response when getting a
burden or prisoner in training. In volleyball the aim is to make a leap at the time of the smash and
to achieve that goal it takes strength, speed and explosive power to move the limbs upwards in
order to hit the ball into the opponent's area. We know that almost all of the movements in
volleyball play involve all the means of motion, both active (muscle) and passive (bone) and the
most influential in carrying out all the movements are the limbs. Legs have a huge effect on
achievement or repulsion results.
The development of the quality of strength that is carried out must issue a maximum or almost
maximum effort to hold or lift existing loads. Similarly, the load given must increase little by
little so that the quality of the muscles can develop properly. A person's ability to make a leap

Effect of Double Leg Bound Exercise on Explosive Capability of Leg Muscle Power in the
Unmus Volleyball Men's Team
http://www.iaeme.com/IJMET/index.asp 1456 editor@iaeme.com
depends on the strength of the muscle that has been given definite training. When making a leap
by using a large pressure through the legs then the muscles that will contract are also great.
The strength of the leg muscles in this study is to carry out a repulsion upward by using very
large power. The most successful and most popular way to increase strength is by resistance
exercise or prisoner exercises, meaning exercise lifting, pushing or pulling a load, both the load
itself and other weights from the outside (external resistance).
The training load intended here is to provide a Double Leg Bound training load. This is done
so that you can see the strength of the muscle when making a leap. The development of the quality
of strength that is carried out must issue a maximum or almost maximum effort to hold or lift
existing loads. Similarly, the load given must increase little by little so that the quality of the
muscles can develop properly. In the weight training program should be very specific. However,
it must be considered the ability and pattern of motion that it produces, the training process using
the load should also be associated with special motor improvement exercises. In other words, that
weight training to get to increase muscle strength, should be given an exercise program to go to
each sport's obstruction.
To do this type of exercise using double leg bound this is a form of exercise by jumping
forward and upwards, using the ability of hip extension and arm movements for forward pushing
movements. For this type of exercise athletes must try to reach a higher height and distance with
an upright body position. If after landing, the position must return to the beginning before making
a move. After that, go back to doing the next move. The development of better technical elements
to strengthen the leg muscle strength that will be used for support when making leaps, besides
that double leg bound exercises also tend to resemble movements when floating in the air. Thus,
the athlete is required to be able to make a good leap forward.
Vertical jump is a person's ability to jump straight up and not use the prefix. Vertical jumps
can also be interpreted as jumping as high as possible by focusing on the strength of the leg
muscles to reach the maximum jump straight up. This vertical jump is usually used by several
sports such as volleyball, basketball, and other sports with the aim of having the explosive power
of the leg muscles so that the jumping ability can be carried out as much as possible.
The vertical jump in a volleyball game is to attack your opponent and avoid blocks from your
opponent. Players must make a vertical jump so that the jump is higher and can hit the ball at the
highest point, especially the position of the quiker (fast ball) because this position usually does
not have much prefix so the vertical jump ability must be good and perfect.
In a volleyball game to make a good leap at the time of the smash must be with sufficient
estimates and abilities. Therefore, a volleyball player must practice jumping skills by doing a
vertical jump test in order to know the highest jump rate.
2. METHODOLOGY
This type of research is an experiment with this type of research design is a pre-test posttest one
group design that begins with a vertical jump preetest. (Ismaryati, 2008: 60-61). After that the
training program was given for 16 meetings. Thus, after the training program is given, the vertical
jump post is conducted. (Ismaryati, 2008: 60-61). For more details, can be seen in the design as
follows:
O1 X O2
where:
O1 : Preetest
X : Training given

Hendra Jondry Hiskya and Carolus Wasa
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O2 : Posstest
The population in this study was the Unmus Men's Volleyball Team totaling 20. Whereas,
the sampling technique in this study was to take the entire population into samples (total
sampling). Total sampling technique is a sampling technique if all members of the population are
used as samples (Sugiyono, 2015: 67). Based on the determination of the sample above, a sample
of 20 Unmus Men's Volleyball Teams was obtained. The research site is located on the Unmus
volleyball court. The desired data in this study was carried out two tests, namely the preetest
Vertical Jump test before doing a double leg bound exercise and after that did the final test
(posstest) Vertical Jump test for 16 meetings. The data analysis technique used for this study was
using the SPSS version 22 program.
3. RESULTS AND DISCUSSION
The results of this study are intended to be able to determine whether there is an effect of Double
Leg Bound training on the ability of vertical jump leg muscles in the Unmus Men's Volleyball
Team. To find out the description of the results of the preetest and posttest Vertical Jump data on
the Unmus Men's Volleyball Team can be described as follows:
3.1. Preetest vertikal jump
After a vertical jump test before being given a Double Leg Bound training, thus the results of the
Preestest Vertical Jump data of the Unmus Putra Volleyball Team obtained a minimum value of
50, a maximum value of 68, an average of 57.05, a median value of 56, range is 18, variance
value is 23.418.
N
Range
Minimum
Maximum
Mean
Std.
Deviation
Variance
Pretest
20
18
50
68
57.05
4.839
23.418
Valid N
(listwise)
20
Then the data that we do, then presented in the distribution so that we know the value of the
frequency of each pretest vertical jump data.
Preetest Vertical Jump frequency distribution
No
Score
Frequency
Relative (%)
1
45 - 50
1
5.00
2
51 - 55
8
40.00
3
56 - 60
5
25.00
4
61 - 65
5
25.00
5
66 - 70
1
5.00
Total
20
100
Dengan melihat hasil distribusi frekuensi yang dilakukan, dari 20 sampel ternyata 1 orang
mendapat nilai vertical jump dengan rentang nilai 45-50, kemudian 8 orang sampel mendapat
nilai vertical jump dengan rentang nilai 51-55, 5 orang mendapat nilai vertical jump dengan
rentang nilai 56-60, 5 orang sampel mendapatkan nilai vertical jump dengan rentang nilai 61-65
dan 1 orang sampel mendapatkan nilai vertical jump dengan rentang nilai 66-70.
3.2. Posstest vertikal jump
Thus, when a vertical jump test is performed after a double leg bound exercise is given, thus the
results of the preliminary data Vertical Jump for the Unmus Putra Volleyball Team obtained a

Effect of Double Leg Bound Exercise on Explosive Capability of Leg Muscle Power in the
Unmus Volleyball Men's Team
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minimum value of 59, a maximum value of 79, an average of 66.90, a range of 20 variance value
of 28.832.
N
Range
Minimum
Maximum
Mean
Std.
Deviation
Variance
Postest
20
20
59
79
66.90
5.370
28.832
Valid N
(listwise)
20
Then the data that we do, then presented in the distribution so that we know the value of the
frequency of each poststest vertical jump data.
Posstest Vertical Jump frequency distribution
No.
Score
Frequency
Relative (%)
1
55 - 60
3
15.00
2
61 - 65
8
40.00
3
66 - 70
6
30.00
4
71 - 75
1
5.00
5
76 - 80
2
10.00
Total
20
100
By looking at the results of the frequency distribution carried out, out of 20 samples it turned
out that 3 people got vertical jump values with a range of values from 55 to 60, then 8 samples
received vertical jump values with a range of 61-65, 6 people received vertical jump values with
a value of 66 -70, 1 sample gets the vertical jump value with a range of values 71-75, and 2
samples get the value of vertical jump with a value range of 76-80.
3.3. Test the normality of data
Based on the results of normality test data with SPSS 22 testing, it was found that the results of
the study were double leg bound training on the results of vertical jump can be seen in the
following table:
Variabel
Sample
Value
Sig.
Sig.
Remarks
Preetest
20
0.050
0.05
Normal
Posstest
20
0.200
Normal
From the table above, it can be concluded that the results of the preetest vertical jump after
the calculation is done, the significance value of 0.050 is greater than 0.05 (0.050> 0.05) so that
the data we test is normally distributed. Whereas the results of the poststest vertical jump after
being given an exercise with a large value yield a significance value of 0.200 greater than 0.200
(0.200> 0.05) so that the data we test is normally distributed. Then it can be concluded that the
spread of data from the preetest and posttest vertical jumps is normally distributed.
3.4. Uji Hipotesis
The hypothesis tested in this study is the Effect of Double Leg Bound Exercise on Explosive
Ability of Leg Muscle Power in the Unmus Volleyball Men's Team. The data obtained were then
analyzed descriptively, then the next research hypothesis testing was carried out in accordance
with the problem, namely "there is an influence on the double leg bound exercise on the explosive
ability of limb muscle power. The assumptions put forward in this study if:
1. H0 : there is no significant effect of double leg bound training on the explosive ability
of limb muscle power.

Hendra Jondry Hiskya and Carolus Wasa
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2. H1 : there is a significant effect of double leg bound training on the explosive ability
of limb muscle power.
Coefficientsa
Model
Unstandardized
Coefficients
Standardized
Coefficients
t
Sig.
B
Std.error
Beta
1
(Constant)
26.371
11.500
2.293
.034
Posstest
.710
.201
.640
3.536
.002
a. Dependent Variable: Preetest
Based on the results of the t test performed with the SPPS 22 program produces tcount of
3.536 with ttable 1.729 at a significant level of 0.05. Means t count> t table, thus the formulation
of the hypothesis is that there is a Effect of Double Leg Bound Exercise on the ability of Explosive
Power of Leg Muscles in the Unmus Volleyball Men's Team.
4. CONCLUSION
From the results of the research and discussion, it was concluded that there was a significant
effect between double leg bound training on the explosive ability of limb muscle power on the
unmus men's volleyball team.
For sports coaches, especially the coach of the Unmus volleyball team can use the method of
double leg bound training as one type of exercise to increase the ability of the leg muscles in
addition to other types of plyometric exercises. For penjasorkes teachers and athletes and sports
people, it is recommended to do double leg bound training because it can increase jumps.
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