and the strength of stimulation depends on the load
speed of movement, variation of intervals or breaks
between each of them. An element that is not less
important is psychiatric pressure during exercise. So,
the intensity is not merely measured from the effort
done by the muscles only, but also the expenditure
of energy on the nerves during exercise (Bompa,
1994).
The intensity level can be measured according to
the training type. For exercises involving speed, it is
measured in meters per second about the average
movements performed for each minute. The
intensity of the activities used to resist resistance,
can be measured in kg or kg/m (one kg is lifted up as
high as 1 metre against the weight force), while for
team sports, the rhythm of the game can help to
measure its intensity. The intensity of exercise
differs from each other depending on the specificity
of the relevant sports branch (BOMPA, 1994).
The pulse rate is one of the indicators that can be
used to determine the intensity of exercise. The
pulse is a wave that can be felt in the arteries when
the blood is in the pump out of the heart. This pulse
is easily felt in a place where there is an artery
crossing (Sandi, 2016). The blood driven toward the
aortic cystol not only moves forward in the blood
vessels, but also creates a pressurized wave that runs
along the arteries (Kasenda et al,2014). Pulse
frequency can be measured by pressing the
radialistic arteries using the index finger tip and
middle finger until the maximum pulsation can be
detected (Bickley, 2013).
Low-intensity sports have several benefits and
weaknesses, including: 1) Suitable for people who
are just starting to exercise, people who are obese,
and people who are quite advanced, 2) taking long
time so it is suitable for those who Love to enjoy the
sport for a long time, 3) Good for athletes or people
who want to improve endurance skills, such as
marathon, 4) taking long time, so it is not suitable
for those who do not have much exercise time, 5) for
those who want to lose Weight loss, will experience
problems because according to the study of Wilson,
et al., those who perform low intensity only
experience temporary weight loss because the body's
metabolism has been adapted, 6) the risk of
experiencing muscle shrinkage due to lean muscle
many activations.
A number of experts and health institutes suggest
that daily exercise is done with moderate intensity
and adequate duration. It is medium intensity for
150 minutes in a week or high intensity sports for 75
minutes a week. This duration is with a 30-minute
sports pattern in one day for 5 days a week, or with
another division but with the same end result. This
figure applies if you are aiming to maintain health
and weight. However, if you exercise with the aim
of losing weight, it may take a different portion.
That is by increasing the exercise time so that
burning calories occurs even more. Just like the
medicine, weight and age are the determinants of
how much exercise you need.
Sports can be differentiated into three, among
including: light exercise, a person only exercising
during leisure time every week. The approximate
number of calories issued in this type only ranges
from 500 calories per week. In medium or moderate
exercise, exercises are at least over 3 days a week
with an average exercise period of 30 minutes, or
when calculated based on calories ranging from
1000-2000 calories per week. Meanwhile, heavy
exercise is depicted with a longer sport and heavier
than medium sports with energy spent reaching
2000-2500 calories per week.
Researchers from Imperial College London
compared the global Body Mass Index (BMI) of
nearly 20 million adults during the year 1975-2014
with data that the level of global obesity among men
rose tripled, from 3.2 percent to 10.8 press En. For
women, more than doubling, it is up from 6.4
percent to 14.9 percent. That means that there are
266 million men of obesity and 375 million obese
women in the world in the year 2014, with all
mankind increasing heavier 1.5 kilograms every
decade since the year 1975. Researchers found that
2.3 percent of men and 5 percent of women have
become very obese, which means they have a BMI
of more than 35 kilograms per square metre. Every
year the problem of obesity becomes a spotlight that
needs special attention to handle it. The problem of
obesity has become an urgent problem around the
world, especially developed and developing
countries. If the trend of obsity is not immediately
lowered, no death rate will be greater.
Body fat should be done by someone who wants
to lose weight or improve his condition. The body
fat scales provide a clear and accurate picture of
body composition, so that it can lose weight
effectively. Monitoring of body composition should
be done in various stages. Exercise and adjusting the
diet would result in the body fat percentage would
be reduced, however this does not mean it would
lose weight. Exercising the body would produce
more muscle. Muscles are also responsible for
weight loss. With the body fat scales or 14 monitor
body composition, it can track such developments.
Body fat is not the same as body mass. The majority
of our bodies are made up of water, muscles, and fat.