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bigger mass can be useful because of the effect the
mass has on the speed of the outgoing ball."
From the above statement it can be concluded
that "the head-heavy racket will be very useful
because it has a mass effect on the impact of the
ball, this can be proven by using the law of
conservation of momentum. The heavier the mass of
the racket, the harder it is to make a back swing but
is very useful when forward swing and impact on the
ball.
The objective to be achieved in this research is to
know the difference between forehand groundstroke
results between the use of head-heavy and head-light
rackets.
Although cardiorespiratory variables were not
different at submaximal intensities between the two
tests, VO2max values derived from laboratory
measurements were underestimated. Using field
testing in addition to treadmill testing provides a
better measurement of a player’s individual fitness
level and may be routinely used to accurately
prescribe appropriate aerobic exercise training
(Girard et al., 2006).
The results showed that place inconsisteny is
more important than action inconsistency in
children's judgments of story adequacy, except when
the action involves the story theme. Developmental
differences in story judgments generally were larger
for inconsistent actions than for inconsistent places,
perhaps due to children's problems in abstracting an
action theme early in story processing (McPherson
and Thomas, 1989).
Theoretical and methodological aspects of self-
efficacy theory are assessed in this study, and the
tennis performance of 40 active players (M age=
26.6 years) serves as the criterion variable. On a
theoretical level, only self-efficacy beliefs, and not
response-outcome expectations or the valence
thereof, were consistently and significantly related to
12 dimensions of tennis performance (Barling and
Abel, 1983).
Competitive tennis play requires a combination
of the major physiological variables; however, the
specifics of these variables have yet to be
determined appropriately. General strength and
flexibility training have been suggested as being
beneficial for performance and injury prevention, yet
specific guidelines are lacking (Kovacs, 2006).
2 METHODS
The research was carried out in 2016 to 2017. In this
study, the authors used descriptive method because
they wanted to know the comparison of using head-
heavy and head-light rackets on forehand
groundstroke on tennis game because based on
information and problems that have been collected
by researchers is what happens at the moment. As
described in Sudjana (2005): "Descriptive research
is a study that attempts to describe a phenomenon,
an incident occurring now. In other words,
descriptive research takes issue or focuses on actual
issues as they were at the time of the study.
The characteristics of descriptive method are: (1)
Descriptive research tends to describe a
phenomenon as it is by studying a phenomenon as it
is by regularly reviewing it, using objectivity and
done carefully; (2) Absence of any given or
controlled treatment; (3) Absence of hypothesis test.
2.1 Research Location
In a study titled head-heavy and head-light rackets
on forehand groundstroke results, the location of the
research on the title was held at Universitas
Pendidikan Indonesia (UPI), Faculty of Sport and
Health Education (FPOK) on the students who
participated in the indoor tennis courts held in UPI
indoor tennis. The reason for choosing the location
is making the research process more effective and
efficient.
2.2 Population and Sample
2.2.1 Population
In a study conducted by a researcher, first need to
determine the population as a source of data for
research purposes.
Population is a group of subjects needed by
researchers, i.e. groups where researchers want to
generalize the findings of his research. As for the
population in this study is a student of Universitas
Pendidikan Indonesia (UPI) Bandung which follows
the tennis club about 25 people.
From the total population, researchers took eight
men aged 18-21 years with the ability to play tennis
field that is considered homogeneous to serve as a
sample of research. Researchers conducted research
on Student Activity Units (UKM) tennis UPI
Bandung because the researcher is an active member
of UPI Bandung tennis since becoming a student
until now, so that communication and with other
members can run smoothly.
Head-Heavy and Head-Light Rackets on Forehand Groundstroke Result
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