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FitBits
January 15, 2004

Exercise ETC's Review of Exercise Related Research.
Compiled by
Irv Rubenstein, Ph D, CSCS


Taking the ACE Personal Trainer Exam?
There’s Still Time to Take an Exam Prep Class

If you are preparing for the February 7th American Council on Exercise (ACE) Personal Trainer exam, there is still time for you to register for an Exercise ETC’s ACE approved prep course.

These two day programs are specifically designed to prepare you for the ACE test, and with over 10 years experience with these programs, we guarantee that if you do not pass the ACE exam after taking this course you can retake the course free of charge.

The registration fee for this program is $199; the class meets on Saturday and Sunday from 8:30 AM until 5:30 PM. We’ll be offering these programs at the end of January in these cities:

  • Atlanta
  • Boston
  • Charlotte
  • Chicago
  • Cincinnati
  • Denver
  • Detroit
  • Ft Lauderdale
  • Los Angeles
  • Minneapolis
  • New York City
  • Phoenix
  • Portland, OR
  • San Francisco
  • Washington DC

For details, call us at
1-800-244-1344 or
visit our web site at
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Welcome to NFPT-Certified Professionals!

Exercise ETC is pleased to announce that our Continuing Education programs and correspondence courses are now accepted by NFPT: The National Federation of Personal Trainers. NFPT certified professionals can now earn .1 CEs for each hour of Exercise ETC’s approved continuing education that they complete. With 15 years of personal trainer certification experience, NFPT is internationally recognized with over 120 personal trainer testing sites worldwide. For more information, contact NFPT toll-free at (800) SAY-NFPT or visit their website at: www.nfpt.com

 

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our programs and materials, visit our
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Childhood Sexual Abuse
May Lead to Over-Exercising in Adults

This study attempted to understand the source of motivation for intense physical exercise in those with psychopathologies – in particular those that might be related to eating disorders. The researchers tested the hypothesis that a history of childhood sexual abuse is a contributing factor in over-exercisers. The comparison of over-exercisers to non-exercisers was based on participants who exercise excessively. The groups were comprised of college-aged adults, with each group consisting of 64 males and 64 females. Each participant responded to a questionnaire to record history of sexual and physical abuse as a child or adult, body dissatisfaction, self-esteem, and positive and negative perfectionism. The results demonstrated that abuse was reported more by excessive weight trainers than others. Abused individuals were more anxious and depressed, had more negative self-perceptions, and had greater fear of failure. Women abused as children were more concerned about failing in exercise pursuits. The overall conclusions suggest that overzealous exercisers may be dealing with childhood sexual abuse issues.

B. Hesdon et al., Relationship of sexual abuse to motivation for strenuous exercise. Journal of Sports Medicine and Physical Fitness 43(6):213-219, 2003.

 

Quad Activity Dependent on Exercise Selection

This study compared the electromyographic (EMG) activity of 3 parts of the quadriceps at 60° and 90° of knee flexion during isometric and functional activity. (The functional activity was a step up and down on a stool.) Surface electrodes over the vastus medialis, the vastus lateralis, and the rectus femoris were used, and all comparisons were made against an EMG from a maximal isometric contraction at 90° of knee flexion. During the isometric component, the vastus medialis and vastus lateralis showed less activation at 60° than at 90°, but the rectus femoris showed no difference. During the step up/down, vastus medialis and vastus lateralis activation was greater during the concentric (step up) phase than the eccentric (step down) phase. The authors conclude that motor control of the vastus medialis / vastus lateralis may differ from the bulk of the quads and that this could be a factor in patellofemoral function.

Commentary: While not extraordinary in its findings, this article demonstrates, minimally, that the components of the quadriceps act differently during open vs. closed chain exercise.

G.M. Morrish et al. Activity in three parts of the quadriceps recorded isometrically at two different angles and during a functional exercise. Electromyography and Clinical Neurophysiology 43(5): 259-265, 2003


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