The Physics of Weight Lifting. Part 1, Gravity

the first of a series of articles that will look to thesure that the resistance we are using is traveling
science of physics to help us make our training morestraight up and down. There are many machines that
effective. In this article we will look at the simple law ofuse pulleys to lift a weight stack up and down against
gravity and how this effects lifting weights.gravity even though you may be moving in a circular
Gravity is defined as - The natural force that causesmotion, if you workout in a gym where these are
objects to be pulled towards the center of the earth, itavailable - make use of them.
causes objects to have weight.But even if you train in a home gym you can still use
Because the earth is round, no matter where you arethese principles to build more muscle. Let's take bicep
on it the center is always straight down. Thus, in orderwork for example, do some close grip pull-ups with the
to have continuous tension on our muscles whilepalms toward your face, this strongly works the
training we must make sure the actual resistance webiceps and the resistance (your own body and any
use travels a path that is straight up and straight down.extra weight you add) is moving straight up and down,
an example of this is the military press, the weight isit also give you the added benefit of peak contraction
pushed against the force of gravity in a straight line upat the top of movement. Or instead of regular barbell
until the arms are locked over your head, then it iscurls try body drag curls, take a shoulder-width grip
lowered slowly resisting gravity, in a straight line toand start from the regular curl position drag the barbell
about shoulder level.against your body up to your throat while keeping your
In all of the big basic exercises (deadlifts, squats, benchelbows back.
press, military press, rows, etc.) the bar always travelsFor your triceps, nothing beats dips with extra weight
straight up and straight down, this keeps the musclesadded by mean of a belt you can hang plates on to.
being worked under a constant load. The basicFor deltoids, notice that the shoulder joints do the
exercises produce the best results because theyexact same motion when doing military presses as
stimulate growth in more then one muscle at a time,doing lateral raises, so you don't even need to really do
but we also now know that they provide continuousthe lat. raises it's just more of the same.
tension in the muscles involved - this is the secondaryYou may ask "But what if i want to do some
reason why they are so productive.pre-exhaustion, I would have to do some lateral raises
There are a group of exercises called isolationthen, wouldn't I?". No, you don't try this instead - do a
exercises these tend to work only one muscle orset of upright rows immediately followed by a set of
muscle group at a time, these exercises are not verymilitary presses. It works this way, the upright rows
efficient at producing overall body mass as the basicfatigue the biceps and shoulders but leave the triceps
exercises. The reason for this is they don't stimulatefresh, now on the presses the strong triceps push the
growth in many muscles at once, but also secondarilyalready fatigued shoulders even harder really making
because most of them don't provide continuous loadingthem grow. This is what I call the pull/push method of
of the muscles.pre-exhaust, it can also be used for other muscles of
In most isolation exercises the bar travels in arcsthe torso.
where only the middle of the movement approximatesIn conclusion, there are many ways to make gravity
a pull against gravity. Take the barbell curl for example,work for you in weight training, now that you know the
The bar is lifted from the upper thighs in a circular paththeory of this article you may come up with some
towards the chin, at the beginning of the movementnew and interesting exercises or exercise
the bar is traveling more horizontally then vertically, it iscombinations.
only when the bar is in the middle position that you arePaul Becker is a natural (steroid free for life)
pulling it upwards against gravity, then as you movebodybuilder and fitness consultant. For more
into the top position of the movement you are onceinformation on Bodybuilding and Bodybuilding
again moving the bar in an almost completely horizontalSupplements visit his website at trulyhuge.
direction. This is why curls tend to be easy at theReport this article
beginning, hard in the middle and the easy again at theThis article is free for republishing
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Other examples of this type of exercise are, lateralRepublish this article
raises, flys, tricep extensions, pullovers, etc.. AnyAsk a Question About this Article
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