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Sports Medicine

Dr. Ken Kinakin D.C., CSCS
Dr. Ken Kinakin is a sport medicine doctor, chiropractor, certified strength and conditioning specialist and personal trainer! He’s also the author of the book “Optimal Muscle Training” and has competed in bodybuilding and powerlifting for over 20 years. Dr. Kinakin lectures around the world to doctors and personal trainers on the areas of weight-training, rehabilitation and nutrition. He is also the clinic director for the AIM Health & Wellness clinic (see www.aimhealthgroup.com), with a rehabilitation and training centre in Mississauga, Ontario. Dr. Kinakin founded the Society of Weight-Training Injury Specialists (SWIS), an organization that educates and certifies doctors, therapists and personal trainers in the area of exercise muscle testing, rehabilitation and treatment of weight training injuries (see www.swis.ca).
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Why Many Pros Don’t Use A Full Range Of Motion

Q. I notice that many of the pros don’t use a full range of motion during training. Does this isolate the muscles more, or are they shortchanging themselves on gains that they could be making?

A. Performing a full range of motion depends on the exercise and whether the increased range of motion decreases the stress on the body part worked. An example is the preacher bench curl. If you curl the weight and the arm is perpendicular to the floor, this will decrease the tension on the biceps because gravity will be working with the weight. The exercises that are effective without a full range of motion include preacher curls, shoulder presses, and lying dumbbell flyes. Exercises that are effective with a full range of motion include lat pulldowns, concentration curls, and leg extensions.

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