Sit-up Form

Question:

 Hi, I am taking a test for a Public Safety Position (Corrections) and for this test you HAVE to touch your knees with your elbows in the sit up.

On your site you say that this way is not recommended because it involves the hip flexors. My question is, is it bad for your back to to them this way?

I have to train to do 34 sit ups in this fashion.



 

Answered By:

Mike Behnken, MS, CSCS ANswers the Fitness Question

 

Short Answer:

No. It is not bad for you to perform a maximal set of sit-ups as you describe.

 

Long Answer:  Lordosis

It is definitely not recommended for the vast majority to overwork the hip flexor muscles which is common in abdominal exercises such as in the sit-up form you mention.

Due to our sedentary lifestyles which usually include ample sessions of sitting, our hip flexor muscles become extremely tight.

Tight hip flexor muscles can actually pull your pelvis anteriorly. This excessive anterior pelvic tilt causes the lower back to arch excessively which is called lordosis.

Putting your body out of alignment can lead to multiple problems because after all, your body is a kinetic chain and it is only as strong as the weakest link. Excessive anterior pelvic tilt worsened by improper sit-up form can render your abdominal exercises useless and possibly causing problems in joints throughout your whole body from ankles to knees to shoulders.

 

Get a Professional Opinion:

Find a certified personal trainer at your local gym or a physical therapist and ask them to analyze your static and dynamic posture. Don't be alarmed by this long drawn out response. This is just to show you what could happen and it's often not as simple as something that is correct or incorrect.

 

Training:

Sit-ups were once thought to be the best exercise for abdominal muscle strength and endurance but there are far superior exercises for abdominal development. The sit-up form in your fitness test were likely implemented because by touching your elbows to knees it is easy to see if you're cheating or not.

Although the sit-up form you mention is working the hip flexors more than the abdominals you should train full range of motion (as you mention) sit-ups so you can improve and be ready for the test. Once you have the job, stop this sit-up form, perform a wide variety of crunches, and core exercises and make sure you stretch your hip flexors to keep them at optimal length.

 

Suggested Reading

Muscle Imbalances and Posture Problems
Learn why people develop poor posture over time. Learn the muscles which are commonly prone to tightness.

100 Abdominal Exercises
Free exercise video demonstrations for your entire core, including oblique exercises, core exercises and exercises for the rectus abdominis or six pack.

More Posture Correction Information

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