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  1. #1
    Dr Game is offline Warming Up
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    Why Do We Bend Our Knees When We Do Situps

    Most instructional information I have seen on situps, people bend there knees, I'm curious why we do this... does it have any effects, why don't we bend our knees when we're doing situps when we hang upside down. Is it okay to lay your legs flat out on the ground?

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  3. #2
    SKMMAN is offline Third Set
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    Sit ups are more easier to do with bent knees.

  4. #3
    Dr Game is offline Warming Up
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    does that mean it increases the intensity if you don't bend them?

  5. #4
    SKMMAN is offline Third Set
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    No what I meant to say was it's like a stance for doing situps. Like dumbell curls, you don't hop on one foot while trying to curl your weights, you use a stance that won't interupt you from your workout. By the way, shouldn't you do crunches instead? They are more easy and effective to do.

  6. #5
    goergen1 is offline Wearing a Cool Hat
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    Situps

    Sit-ups can be done with bent or straight legs. because bending the legs changes the lever arm it makes sit-ups easier to do. There are many changes we can make to our body position that seem small but will have a dramatic effect on the way the body will adapt to an exercise.

    They are more easy and effective to do.
    There is no such thing as a more effective exercise. There are only exercises that fit or don't fit the goal and training level of a person.

  7. #6
    Hoss is offline mѡr // -v
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    Along with moving the origin to an easier angle, most people aren't very flexible so keeping the leg extended and then further extension on the hammy could cause some to be uncomfortable.

  8. #7
    Funnylookingdud is offline Registered User
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    Its my opinion that doing sit ups with straight legs causing strain on the lower back. Something we want to avoid. Also, there are studies out there that show the best sit ups are the bicycle sit ups. Both feet off the ground, knees parallel to hips, and bring your right knee to your left elbow, vice versa. Less strain on the back, and more stomach muscles are used than in your garden variety sit up. Just google sit up. I'm sure you will find lots of info for it.

  9. #8
    SKMMAN is offline Third Set
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    Quote Originally Posted by Funnylookingdud View Post
    Its my opinion that doing sit ups with straight legs causing strain on the lower back. Something we want to avoid. Also, there are studies out there that show the best sit ups are the bicycle sit ups. Both feet off the ground, knees parallel to hips, and bring your right knee to your left elbow, vice versa. Less strain on the back, and more stomach muscles are used than in your garden variety sit up. Just google sit up. I'm sure you will find lots of info for it.
    What he said was what I was trying to explain, I just could not find the right words to explain it.

  10. #9
    goergen1 is offline Wearing a Cool Hat
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    Abs Training

    Also, there are studies out there that show the best sit ups are the bicycle sit ups.
    Again, there is no such thing as a best exercise for any bodypart. The reason many people hit plateaus is because they think there is. So there is no variety in their workout.

    Also, anybody who knows how to read a study will realize that most researchers do not understand how abdominal recruitment works. Strain in the lower back is due to the lifter failing to recruite their lower abdominals first. Instead they uset their hip flexors first. This pulls the lumbar spine into an arch and puts stres on the spine itself. So using the abdominals to stabalize is a big deal.

    1.) If you know how to use your abs as well as understand proper form there are no unsafe exercises.

    2.) If you find that you are getting low back pain from an abdominal exercise

    A. Your abs a too weak to do it
    B. You do not have good form
    C. Both

    3.) Research dating from today back to the 1950's has found nothing wrong with straight leg situps.

    From my own experiance I have done straight leg situps as well as streight leg situps on a glute ham raise using weight and found that it significantly helped to increase my abdominal strength as well as better my ability to stabalize heavy weights in other exercises.

    A third time, exercises are all good when done at the proper time and when the lifter is at the proper training level.

    Please understand that good information is hard to come by. It took me 8 years of training to really understand how abdominal training actually worked.

    Then I was able to increase my squat by 150lbs.

    After another 4 years another bell went off, and my squat went up another 200lbs.

    I give full credit to my increase in effeciancy of abdominal training for all of these gains. Without stronger abs I would not have been able to focus on other muscle groups.

    Either that or I am a slow learner. . I will pretend that is not the case.

    Now I will step down from my soap box.

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