SinorSlim's Recipe of The Week:
Joint Articulation (Biomechanics in Terms of Injury Prevention)
Part 1: Shoulder Joint and Shoulder Girdle
Being someone with a history of shoulder injuries (not due to improper form, but from accidents as a youngster), I have to be even more cautious of my form when performing upper body exercises. However, this is not a bad thing. With proper form you are actually doing yourself a favor. With the proper form you will develop full muscles that are also symmetrical. It is important to know that each exercise you perform in the gym is designed based on your anatomy and is designed to target a specific muscle or muscle group placing that muscle or muscle group in its optimal position and range of motion to produce the maximum force. This is the beginning of an entire series of articles based on the biomechanical properties of the human body and their relation to proper form and injury prevention.
Eccentric Contractions and Muscle Hypertrophy
First off lets define the two terms that we are looking at prior to examining their connection and relevance to the progression of your training. An eccentric contraction is the part of the movement in an exercise in which the muscle is contracting but lengthening simultaneously. This is opposed to a concentric contraction in which the muscle is shortening while contracting. Contrary to popular belief the eccentric contraction is actually damage within the muscle. This muscle damage is actually necessary for muscle hypertrophy.
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