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The Effect of Double Leg Bound and Incline
Bound Plyometrics Training Methods
on Increasing Legs Power
I. Komang Sukarata Adnyana(B), I. IKetut Budaya Astra, I. Wayan Muliarta,
Peby Gunarto, and I. Gede Suwiwa
Faculty of Sport and Health, Universitas Pendidikan Ganesha, Buleleng, Indonesia
{sukarata.adnyana,budaya.astra,peby.gunarto,
gede.suwiwa}@undiksha.ac.id
Abstract. This study aims to determine The Effect of Double Leg Bound Plyo-
metrics Training on Increasing Leg Power, The Effect of Incline Bound Training
on Increasing Leg Power, and Differences in the Effects of Double Leg Bound
and Incline Bound Plyometrics Training on Increasing Leg Power. The research
subjects were female students of the Buleleng volleyball school total 20 people.
After data collection and data analysis results obtained research results 1) There
is an Effect of Double Leg Bound Plyometrics Training on Increasing Leg Power
with t count 2,357 >t-table 2,262) 2) There is an Influence of Incline Bound
Training on Increasing Leg Power with t count (2,286 >2,262) (3) There is no
difference in the effect of Plyometrics Double Leg Bound and Incline Bound on
Increasing Leg Power of female students because the t-count analysis result is
1.12 <sig, which is 2.262 at level 0.05.
Keywords: Plyometrics ·Double Leg Bound ·Incline Bound
1 Introduction
Volleyball players, especially in Buleleng, have yet to show good performance. This
can be seen from the achievements that can be achieved in competitions both at the
regional and national levels, as well as the small number of players who can take part in
the National League. By looking at the problems mentioned above, it is very necessary
to have the right training approach and training method. To train volleyball players,
especially in increasing leg power which in the future can support the creation of other
movement coordination required in the specifications in volleyball sports such as; pass,
service, smash, and block.
2 Plyometrics
Plyometrics comes from the Latin “plyo and metrics”, which means “measurable increas-
es” or a measurable increase (Chu, 1992: 1). This term appears in English terminology.
© The Author(s) 2022
I. G. Suwiwa et al. (Eds.): ICOPESH 2022, ASSEHR 715, pp. 133–138, 2022.
https://doi.org/10.2991/978-2-494069-79-4_18
134 I. K. S. Adnyana et al.
This is a result of the inaccuracy of the exact definition of plyometrics. Plyometrics
was first proposed by a forward-thinking American citizen named Fred Wilt in 1975.
Plyometrics training refers to exercises characterized by strong muscle contractions in
response to rapid and dynamic loading. Redcliffe and Farentinos (1985: 3–7) argue that
“plyometrics training is an exercise that has a special characteristic, namely very strong
muscle contractions which are a response to rapid loading or stretching of the muscles
involved or also called muscle spindle reflexes.
Plyometric training has long been used in training programs for athletes who need
power in sporting events aimed at enhancing explosive style (Markovic G and Mikulic
2010). In addition, Markovic G and Mikulic (2010) stated that “Plyometric training is
considered capable of increasing the stretch-shortening cycle stimulant by increasing
muscle tendons during the eccentric phase by reducing the duration of the transition
between the eccentric and concentric phases. Plyometric exercises are specific exercises
used to develop explosive power (Brown et al. 2007).
1. Double Leg Bound
Radcliffe and Farentinos (1985: 28) Double Leg Bound is a plyometrics exercise that is
performed quickly and explosively to increase lower leg power by jumping up and down
(with two legs supported).
The implementation of the double leg bound is starting from the half squat position,
with both arms at the side of the body, looking forward. Next, jump forward and up
using the hip extension and hand movements to push forward. Try to reach maximum
height and distance. After landing back to the starting position to do the next bounding.
2. Incline Bound
Radcliffe and Farentinos, (1985: 32) Incline Bound is a jumping motion exercise with
both or one foot resisting on the ground of the stadium stairs or an inclined plane with
an inclination of approximately 20 degrees to jump and land by throwing/bounding.
The implementation of the Incline Bound starts from the same initial position as
the double leg bound and starts from the bottom of the inclined plane or stairs. The
movement is the same as the double leg bound, but for the incline bound the participant
jumps step by step or jumps up with a distance determined by the number of jumps per
set.
3. Volleyball Game
The volleyball game is a game that requires special skills, therefore in playing volleyball
several techniques must be mastered by someone. The technique is how to do or carry out
something to achieve certain goals effectively and efficiently. Techniques in volleyball
can be interpreted as a way to play the ball efficiently and effectively following applicable
regulations to achieve optimal results. In Yunus (1992: 109), there are various basic
techniques in volleyball games, including; passing techniques, service techniques, smash
techniques, and block techniques. To perform all these techniques, it is necessary to have
good leg power, especially smash and block.
3Method
This research includes field experimental research. This method was chosen to determine
the symptoms of the treatment applied to the sample. As Sudjana (2005: 278) says the
The Effect of Double Leg Bound and Incline Bound Plyometrics 135
amount of observational data can be classified into several factors, characteristics, or
attributes with each factor or attribute consisting of several classifications, categories,
groups, or maybe levels. Based on the results of observations, there is such a phenomenon
that will be examined regarding the association or relationship between factors.
The research design uses a randomized pre-test and post-test design, and the
research subjects are people who place data for inherent research variables and problems
(Arikunto, 2002: 116). In this study, the research subjects were female students of the
Buleleng volleyball academy in 2021, totaling 36 students). The sample size is 20 people
from the entire population by lottery. From the 20 samples, the leg power ability was
measured. Based on the score from the measurement results of leg power. Furthermore,
to determine the sample for each treatment using ordinal pairing (ABBA).
The research was carried out from May to July. Data collection is in the form of a
vertical jump test. This data was retrieved 2 times, namely during the pre-test and post-
test, and is a picture of the power of female students at the Buleleng volleyball school
in 2021.
In obtaining data following the objectives of the researcher, the data collection
method used is to use a vertical jump test sheet as follows.
4 Results and Discussion
The evaluation of the results of the leg power test of Buleleng volleyball school students
can be seen in the following Table 1.
Double leg bound exercise after data analysis obtained a t-hit of 2,357 >t-table of
2.262 at level 0.05. So null hypothesis is rejected, and it can be said that exercise can
increase leg power (Table 2).
Table 1. DOUBLE LEG BOUND TEST RESULT
No Nama Test result
Pre Test Post Test
1Female 1 20 55
2Female 2 22 55
3Female 3 22 54
4Female 4 20 54
5Female 5 22 55
6Female 6 22 54
7Female 7 20 50
8Female 8 20 55
9Female 9 20 55
10 Female 10 22 50
Ave r age 21 53.7
136 I. K. S. Adnyana et al.
Table 2. INCLINE BOUND TEST RESULT
No Nama Test result
Pre Test Post Test
1Female 1 22 55
2Female 2 20 50
3Female 3 22 51
4Female 4 22 55
5Female 5 18 55
6Female 6 20 50
7Female 7 20 50
8Female 8 24 55
9Female 9 24 50
10 Female 10 22 54
Average 21 52
Table 3. COMPARATION POST-TEST ANALYSIS
No Double Leg Bound
post-test
Incline Bound
Plyometric post-test
p12p22
155 55 3025 3025
255 50 3025 2500
354 51 2916 2601
454 55 2916 3025
555 55 3025 3025
654 50 2916 2500
750 50 2500 2500
855 55 3025 3025
955 50 3025 2500
10 50 54 2500 2916
x2537 525 28873 27617
df 9 9 9 9
n10 10 10 10
T-hit 1.12
The Effect of Double Leg Bound and Incline Bound Plyometrics 137
Incline bound exercise after data analysis obtained a t-hit of 2.286 >t-table of 2.262
at level 0.05. So the null hypothesis is rejected and it can be said that exercise can increase
leg power (Table 3).
After data analysis, the t-hit was 1.12 <sig, which is 2.262 at the level of 0.05. So
the null hypothesis is accepted and it can be said that there is no difference in the effect
between double-leg bound exercise and incline-bound exercise on increasing leg power.
5 Conclusion
Following the results of the study it can be concluded.
1. Double leg bound exercise is effective for increasing leg power which can be seen
from the results of data analysis, with t-hit of 2,357 >t-table of 2.262 at level 0.05.
so H0 is rejected, and it can be said that exercise can increase leg power.
2. Incline-bound exercise is effective for increasing leg power which can be seen from
the results of data analysis, with a t-hit of 2.286 >t-table of 2.262 at level 0.05. so
H0 is rejected, and it can be said that exercise can increase leg power.
3. There is no difference in the effect between the double-leg bound and incline-bound
training methods in increasing leg power. This can be seen from the results of the
t-hit data analysis of 1.12 <t-table 2.262 at the level of 0.05. so H0 is accepted,
and it is said that there is no difference in the effect of double leg bound exercise
with incline bound exercise on increasing leg power in female students of Buleleng
volleyball school.
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