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Two very popular back exercises being performed today are the pull-down, also known as the lat pulldown, and machine pullover. Both movements are very effective forworking the latissimus dorsi or lats. Unfortunately most people perform them incorrectly causing poorly developed lats and increased risk of injury. On the other hand when superior technique is used not only does the target muscle develop properly, there is also less chance of an injury. We'll first examine the location and functions of the latissimus dorsi muscle. Anatomy and Function Lat Pulldowns
Biomechanically, this movement works mostly the lats just below the armpits, the teres major, rhomoids, and trapezius. It is far safer and biomechancially more efficient to work the lats by pulling the bar down to the front of the body. During the performance of this exercise, the head of the humerus remains in a neutral position which is the center of the socket. The unnatural stress to the shoulder joint is thereby eliminated. Lat Pulldown to the
Front Exercise Performance
With the bar in this position, the elbows should be pointing to the sides of your waistline. While pulling the bar down slowly have a slight arch in your back. As the bar comes down move your head back slightly. Bring your upper body and head back to their original position as you slowly lower the weight. At this point you should be looking straight ahead. To avoid injury to the neck, never stick your head forward past your arms or turn your head to the left or right. Make sure you fully extend the arms at the elbows but do not relax at the top. Also, do not hyperextend your shoulders to try for that extra stretch. This could result in a shoulder injury. Keep the muscles under constant tension and do not cheat by heaving the bar down so that you can use extra weight. If you have to hunch forward as you pull the handle down then you are using too much weight. Remember to exhale as you pull the bar down and inhale as you allow the bar to return to the fully extended position.
Lat Pullover Machine Since one of the functions of the lats is to pull the arms down in front of the body, this particular machine will allow the user to further develop them from a different angle. The caution here is to remember that a machine, unlike free weights, has a fixed pivot point with a locked-in motion that your body has to move in. Because of this your body may be forced into a biomechanical movement that is unduly stressful to the shoulder joint and over time could cause damage. Always make sure you are properly adjusted to the machine before performing this movement. This is done by adjusting the seat height so that the pivot point of the machine is lined up with your shoulder joint. (See pictures below.)
Exercise Performance After taking a deep breath, exhale slowly as you bring the handle down either into your upper thighs or your midsection, depending on the design of the pullover machine. Hold for a second then inhale as you allow the resistance to bring the handle back up until your upper arms are once again parallel to your head. Make sure that you lead with your elbows, not your hands. Never jerk the crossbar down or allow it to drop backwards without complete control. Always pull and let the handle rise slowly, keeping constant tension on the muscles throughout the movement. When you have finished your repetitions, step on the foot lever which will allow you to remove your arms safely. Then slowly let the foot lever up until the weight stack is completely down, then you can exit the machine safely. Always remember to keep your back flat against the pullover machine's back support when performing this movement. To assist in this, curl your trunk forward slightly when pulling the handle down. Keep Your Workouts
Safe Whenever you start any of these movements for the first time, or you are coming back from a layoff, always start slowly and work your way up in weight and sets over time. This way you will avoid extreme soreness and possible injury. Make sure the muscles to be used are warmed up thoroughly before performing your more intense work sets. Keep your repetitions around 10 to 12 of 40 to 50% of your work sets for at least one to two sets to generate blood flow and warmth to the muscles. A properly warmed up muscle can be up to 20% stronger and is less likely to get injured. One final note, if any of these exercises causes unusual discomfort or pain discontinue the movement immediately. Seek out a qualified Personal Trainer to make sure you are doing the movement properly. If you still have unusual pain and discomfort after readjusting the machines and trying various hand positions, then it would be advisable to get a medical clearance to rule out any kind of musculoskeletal or other health problems. This is especially true if your are a man forty and over or a woman fifty and over. DISCLAIMER:
The information in this article is for educational purposes only, and
is not intended to provide medical advice which should always be obtained
from a qualified health practitioner, and has not been approved by the
U.S. FDA. If you have not exercised
in some time, have any sort of health problem such as arthritis, diabetes,
cardiovascular disease, or asthma, or you are 50 and over, please get
a physical and consult with a professional fitness trainer.
Copyright© 2005 by Live Well Naturally. The use of information found in Live Well Naturally Newsletter is prohibited without the written permission of the author. |
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