Updating the Exercise Rehabilitation of the Upper Body Courses

Doing Some Early Morning Research

I was up early this morning. 

What I try to do once a month is to see what is new in the exercise rehabilitation world. 

There are a lot of okay places to go but I have a list of journals that I try to visit to see what is new and if there is any new information that will improve my courses or new exercises for my clients.

Let me share with you a little of what I found:

Curve Progression in Idiopathic Scoliosis: Follow-up Study to Skeletal Maturity

Spine: 1 April 2009 – Volume 34 – Issue 7 – pp 697-700

This is article is at a great time.  I am just wrapping up the scoliosis and exercise manual.  It shows that Cobb angle is still the best predictor of long-term curve progression. 

This content is already in the upcoming manual and if you have subscribed to the exercise and injuries manuals, you will learn more about Cobb angle and a pre-screen for scoliosis, next week.

Take Home Message:  Know what Cobb Angle is and it is the besting indicator of the scoliosis getting worse in a client.

Patellofemoral Joint Force and Stress during the Wall Squat and One-Leg Squat.

Medicine & Science in Sports & Exercise. 41(4):879-888, April 2009.

This was very interesting article.  The research is nice but what I am looking at is how can it help with my clients.  I have a number of clients that report anterior knee pain with a wall squat.  I modify their technique in order to decrease that stress.  I never knew that I could change the joint angle of the squat in order to decrease the stress on the knee joint.

This is a nugget of information I will be adding to them Exercise Rehabilitation of the Lower Body courses:

“When the goal is to minimize patellofemoral compressive force and stress, it may be prudent to use a smaller knee angle range between 0[degrees] and 50[degrees] compared with a larger knee angle range between 60[degrees] and 90[degrees].”

Take Home Messages:

  1. Wall squat creates more force on the patella than a single leg squat. 
  2. Having the foot a short ways or a long ways from the wall created equal force on the patella in the wall squat except between 60 to 90 degrees of knee bend.
  3. A wall squat between 0 to 50 degrees of knee bend creates less force on the patella than one performed at 60 to 90 degrees of knee bend.

Breakdance Injuries and Overuse Syndromes in Amateurs and Professionals

Am J Sports Med April 2009 vol. 37 no. 4 797-802

Sometimes there is some fun research out there.  I thought breakdancing died in the 80s.  I do know one friend that goes and competes in breakdancing.


I have yet to rehab a breakdancer but I will remember their recommendations:

“Breakdance injuries and overuse should not be underestimated. Physicians should be aware of the common risks in this highly acrobatic kind of dancing.”

 Take Home Message:  Breakdancing is dangerous like every other sport.

I only got to three journals, I guess I will have to do a little more reading.

Let me know what you think of the above, leave a comment.

Have  a great weekend.

P.S. – I have the Exercise Rehabilitation of the Upper Body courses that I am presenting at the end of the month.  For more information, click here.

Rick Kaselj, MS


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1 Comment

  1. A study published in the British Journal of Sports Medicine (April 2007; 41(4):264-8) examined the patellofemoral contact force in relation to the decline angle used in a single-leg squat. The use of 25-degree decline angle boards had widely been believed to increase patellar tendon loading more than traditional floor squasts without increasing contact forces.

    This study confirmed that single-leg squats performed at equal or greater than 15-degree decline angles generate a 40% increase in max. patellar tendon force with an associated 40% increase in the knee moment. Adding a 10kg backpack (at the 25-degree decline) further increased the knee moment and subsequently the patellar tendon force by 23%. Where knee flexion exceeds 60 degrees, patellofemoral force increased significantly more than the force on the patellar tendon (9xBW PFJ contact force).

    Implications? From this study, max. patellar tendon loads occurred when using a decline board set between 15 – 30 degrees. Individuals with restricted dorsi-flexion benefit from using a decline board to decrease the required ankle moment while effectively increasing the knee moment. Knee flexion angles of greater than 60 degrees should be avoided (which appears consistent with the findings in your present study). When high degrees of knee flexion cannot be achieved due to pain, a weighted backpack can be used to effectively increase the loading of the patellofemoral joint.

    Research articles like these are the basis of my workshop being offered in Vancouver, BC: Corrective Exercise Training for Injury Management at the end of April 2009.


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