The Leg Extension Hamstring Stretch Exercise is a great way to lengthen your hamstrings, helping you to build stability in your golf swing and to avoid injury. The Leg Extension Hamstring Stretch Exercise is based on the Active Isolated.

1. The Controversy About Leg Extension Machines Leg Extension
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By Richa John - http://legextension.net/
Professionals within the fitness industry are used to lively debate. We are accustomed to hearing
researchers argue dynamic vs. static stretching. We have heard many opinions about the best ways to
build muscle: low weight, high reps or heavy weight, low reps. And the debates continue. One such
controversy involves the use of particular weight lifting machines common to many gyms. Are these
machines a good use of your time and energy? Can some of these machines actually be a detriment to
your health and fitness?
Leg extension machines are a controversial weight machine. These machines have a seat and a padded
bar that rest at the juncture of the leg and foot. As you lean back in the seat, you lift the legs up until
they are nearly straight and then slowly let the legs back down. The amount of weight your legs lift can
be adjusted.
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2. If you use this type of machine, you are focusing your lifting efforts on your quadriceps (the large
muscles of your front thigh area)-namely the vastus medialis, vastus lateralis, vastus intermedius, and
the rectus femoris. Interestingly, this machine lets the hamstring muscles completely relax as the
quadriceps do all of the work.
Many avid lifters are attracted to this particular machine because they feel that this isolation really helps
them emphasize each of the four muscles in the quadriceps. And of course, if you get judged on your
physique while posing, you want some major muscle definition. They're right about this isolation, but
are leg extension machines a good weightlifting choice for the average person.
I think not. Of course, as is to be expected with any controversy or debate, there are various schools of
thought regarding leg extensions. Some say these machines are hard on knees. Others say the machine
has a common rehabilitative method for knee injury or knee surgery is the leg extension machine.
How can both be true? I would suggest that using leg extensions in a rehab atmosphere works because
light weight is used to correct muscular imbalances. But if we are talking about the typical person doing
leg extensions on the machine at my gym, they are not lifting 5 or 10 pounds. Rather, they're lifting
much more weight. Such a difference in weight makes a tremendous difference in terms of how the
knee is affected.
A condition known as Chondrolmalcia Patella may be brought on by the leg extension machine. This
painful condition makes the kneecap's normally fluid, smooth arc of motion crooked and pulls the

3. kneecap out of alignment.A 1988 study found that tension on the anterior cruciate ligament happened
when lifters fully extended their legs during the leg extension exercise.
This tension could ultimately cause a tear. Tears often require surgery.A lot of people have muscular
imbalances because they are out of balance in terms of hamstring vs. quadriceps strength. This muscular
imbalance can bring on a host of knee issues.
So… What’s Next ?
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