Amplitude Of Movement, Law of Repetitive Motion, and Plyometrics

13 Aug 2010 00:02

You may have heard trainers and coaches talk about movement amplitude. I often talk about amplitude as being one of those performance characteristics that determine the outcome of a training regimen and one of the factors indicating reductions or improvement in performance.

Amplitude is also part of the "law of repetitive motion" equation developed by Dr. Michael P. Leahy, who is the founder of Active Release Techniques (ART). This "law" is an equation describing the interaction between various parameters of human motion: I=NF/AR where:…

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Nutrition is Not a Top Ten Proposition and the Lycopene Bust

09 Aug 2010 02:28

I'm going to give you three vegetables. You pick the best one.

  • Tomatoes
  • Green (Bell) Peppers
  • Spinach

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Sciatica: Causes, Diagnosis, And Treatment

28 Apr 2009 20:39

Sciatica is a buttock pain radiating down the back of the thigh and leg and possibly into the calf or foot. Other characteristics of sciatica include varying degrees of weakness in the leg muscles and numbness and/or tingling that radiates down the leg. These symptoms occur because of compression and/or irritation of the sciatic nerve or nerve roots which are forming the sciatic nerve. The areas in the buttock and leg affected by this compression are the areas that the sciatic nerve supplies with messages for normal function. There are many other names for sciatica including lumbosacral radicular syndrome, radiating low back pain, nerve root pain, and nerve root entrapment….

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Myofascial Trigger Points and Trigger Point Therapy

28 Apr 2009 01:35

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Wobble Boards, Bosu Balls, or Foam: What's The Difference?

18 Apr 2009 16:00

You've probably seen a wobble board before. They are these round discs with a ball or disc underneath them. Bosu balls are similar but they are more like a half swiss ball with a platform attached. Figure 3 below shows a boy jumping from bosu ball to bosu ball using the "ball" side. These can also be turned over on a hard surface so that the ball is a pivot. People use this method for pushups, for instance….

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How to do Deadlifts: Hips Too High, Too Low, or Just Right

17 Apr 2009 01:18

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Snatch Grip Deadlifts

12 Apr 2009 00:24

The name snatch grip deadlift is actually somewhat of a misnomer. It would be more accurate to simply call them Wide Grip Deadlift to avoid confusion. The reason they are called snatch grip is that they employ the wide grip that many Olympic lifters (most) employ in the Snatch Lift. But a snatch is still a snatch regardless of what grip is employed….

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Kneeling Squat

09 Apr 2009 20:35

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Split Squats, Lunges, and Single-Leg Squats (Pistols)

02 Apr 2009 17:32

Much confusion exists as to the difference between these movements especially owing to confusing terminology like 'stationary lunges'.

Let's keep it simple. The following video shows a basic Split Squat. Variations to change emphasis, increase range of motion, or progress in difficulty would be:…

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Cortisol

31 Mar 2009 14:36

Cortisol is the primary member of a family of glucocorticoids, and is considered the main catabolic hormone. Corticosterone is the other glucocorticoid, but is thought to be much less potent than cortisol (accounting for approximately 4-5% of total glucocorticoid activity). Cortisol is made and secreted from the adrenal cortex, via the hypothalamic-pituitary-adrenal (HPA) axis, with a small amount also derived from the conversion of cortisone….

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Stretch Reflex with Passive/Static Stretching

19 Mar 2009 17:16

The stretch reflex, or myotatic reflex is a neural mechanism that responds to changes in muscle length (stretching) by attempting to resist the change in length. The changes in length are detected by proprioceptors called muscle spindles. Changes in muscle tension are detected by another important proprioceptor, the Golgi tendon organ (note: there may be other processes at work)….

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Lip Service: Superficial Terms in the Fitness Industry

19 Mar 2009 00:20

Words can be very powerful. But words themselves aren’t everything; it’s how you string them together. Their context.

Brian Grasso said in an article, “We are a term crazy industry”. Yes, and I’d go so far as to say we are a term OBSESSED industry. Terms sometimes become more important than the message, or lack thereof….

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Shoulder Injury Prevention 2

18 Mar 2009 15:29

In the first part of shoulder injury prevention, I wrote about certain stretches and mobilizations necessary for the shoulder girdle to function properly and get the appropriate scapulo-glenohumeral rhythm. This means that we need to get the humerus to function properly in the glenohumeral joint to help the scapulae glide efficiently and not tilt anteriorly (up and forward).

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Shoulder Injury Prevention - Dip Shrugs

17 Mar 2009 16:58

17 Mar 2009 16:45

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Shoulder Injury Prevention - Pec Minor Tightness and Stretching Video

17 Mar 2009 15:01

Pectoralis minor tightness can be associated with pain between the shoulder blades which causes the rhomboids to be in a constant overworked/stretched position….

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Shouler Injury Prevention - Thoracic Mobility

17 Mar 2009 13:38

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Weak Links Versus Sticking Points in Strength Training

13 Mar 2009 16:15

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Common Misnomers and Mix-ups: Muscle Actions, Balance, Stability, Single Legs and Straight Back

21 Feb 2009 20:52

All muscle contractions involve the muscle shortening or attempting to shorten against resistance. There are not different types of contractions only different types of actions (movement or lack thereof) depending on the circumstances. A muscle is producing force by contraction but this may lead to shortening (concentric action), lengthening (eccentric action), or maintaining length (isometric action). So the concept of muscle actions specifically describe the type of length changes that skeletal muscle may undergo after it has been activated by the nervous system….

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Overtraining doe not always reduce strength

29 Jan 2009 20:57

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Fitnessfatigue

28 Jan 2009 23:24

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The Singles Scene - Your Guide to Single Rep Strength Training

24 Jan 2009 22:23

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