Floating Heels: A New Way To Load

Long story short, I came across this research paper (link here) and it highlighted the beneficial training effects of a “floating heel” while performing jumps. The idea of a floating heel is quite simple. The mid/forefoot is raised and the heel is no longer in contact with the ground, hence the name “floating heel”. Your mid/forefoot have to become quite active and force the arch the work a little harder than it might otherwise, as the weight and load is now place on the only spot that has contact with the ground, being the mid and forefoot.

The idea is that with the heel no longer in contact with the ground, the constraints based approach forces you to work the ankle complex in a way that might be more favorable and transferable to sport. The position of that of a floating heel and contact during a plyometric are quite similar, see image below.

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Post Activation Potentiation: Its about you

Post Activation Potentiation (PAP) is the concept that a specific type of stimulus imposed on the body can facilitate “potentiate” the performance of the following movement to be performed. In less scientific terminology, its the idea that doing one exercise, like a back squat, before another movement, like a jump will help increase the performance of the jump to a greater extent than simply performing the jump by itself.

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Supramaximal Eccentric Training For Posterior Upper Body Strength

By: Drake Berberet, CSCS

 

By now we should all know what eccentric strength is. If you don’t, you should probably purchase Triphasic Training right here (I’ll even provide the link, no affiliation).

 

Eccentric movement in its most simplest form is the reverse muscle action to concentric movement. Concentric movement is what we all think of when we think of lifting weights. For example, during a bicep curl the concentric movement is the actual “curl” part. The eccentric movement is the lowering down of the weight down…pretty simple right?

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Assessing Energy Transfer in the Vertical Jump

Author: Drake Berberet

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Transfer of Energy 

The ability to maximize transfer of energy in sport is typically what sets the elite athletes apart from the rest. Not only does it allow them to jump higher, run faster, and move more efficiently, it also allows them to save valuable energy so that they are not burnt out at the end of the game. In the long run, efficient transfer of energy may also prevent the risk of injury. It is well established that fatigue masks fitness, and injuries typically present themselves at the end of the game when the athletes are in a high state of fatigue. If transfer of energy is optimized, that athlete might never reach that level of fatigue that puts them at a risk for injury.

What are the two assessments?

The two assessments that can be used to assess energy and power transfer in jumping are the Eccentric Utilization Ratio (EUR) and Stretch-Shortening Cycle % difference (SSC%). Both assessments help find deficiencies in jumping performance and can help practitioners create a more “optimal” jumping profile going into competition (i.e. when all of your training matters most).

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Creative Ways To Train Rotational Power

 Coach: Bill Miller

Baseball, golf, tennis, track & field…the list goes on and on of sports that rely heavily rotational power. It has been well-documented how important strength is for all athletic movement. After all, Power (Force/Time) requires Force in order to be displayed. The issue for many athletes and coaches may become the application of that strength through higher speed movements, especially in the right planes of motion. Rotational power (Transverse Plane) requires kinetic energy built up from the lower body and transferred to the upper body and through the hands.

Rotational movement pattern in most athletic scenarios:

  1. Static energy built up on rear leg
  2. Kinetic energy transfers through the front leg (front side bracing mechanic)
  3. Torque is created between the rotating pelvis and torso (hip/trunk separation)
  4. Energy is dispelled through the upper body as the torso and arms continue rotation

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Case Report (Bench Press)

Design

Perform 8 sets (only last 6 recorded) of 4 reps at 80% of my 1rm. Perform each rep with maximal effort. Record velocity of each set.

Analysis:

Calculate the rate of velocity drop-off in each set (as determined by the slope of the 4 reps). Record the Min and Max velocity of each rep in the given set. Report the raw velocities of each rep and each set.

Data

Graph 1 is the raw data of each rep’s velocity in each set. There is an obvious drop off in velocity between reps.

GRAPH 1

 

Graph 2 is a lot more interesting than Graph 1. What we have here is the slope of velocity drop-off between reps in each set (blue line and left vertical axis). There is also Max velocity and Min velocity (orange line and right vertical axis).

GRAPH 2

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Potential Versus Expression

 

Force potential is the maximal amount of force one could possibly express if all contractile properties were to act in an optimal fashion. It is dependent on the raw physiological properties of the body. Force expression is the amount of force one actually expresses in a movement. Force expression is much more complex. It involves the dynamic nature of skill (neuromuscular timing), which is what ultimately the limiting variable in force expression. Think about jumping to dunk versus performing a single arm, maximal arm flexion against an isokinetic device. Both movements require maximal force expression (in context) to get the best results, but the complexity of the jump compared to the single arm flexion is exponentially greater.

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Basic Concepts

Strength training, in the grande scheme of this world, is relatively new. Math has been around for centuries yet organized weight training has arguably been around for only decades. Yet, the roots of weight training do not find themselves in embedded in a unique soil. Instead, weight training’s seed is buried in the grounds of many different sciences. Thus, despite weight training being a relatively “new” concept, its foundations have had many years of refinement, dating back to Sir Isaac Newton himself.

Research can thank the Russian’s for their obsessive drive to show world dominance through physical feats (i.e olympics). This obsession expedited the scientific understanding  of human adaptation to physical stressors (weight training). Thus, sprouting from behind the iron curtain were many of the basic concepts that create the foundation of any strength and conditioning program. Russian’s clearly understood that strength mattered and not only strength, but the context of strength. By melding physiology and physics, the newtonian output of performance and the biological process of obtaining said outputs were formed. Thus, one could argue physics, physiology and sprinkle of psychology could just about answer any sporting action.

By understanding some of the basic scientific roots from which strength training has grown from, we as consumers and learners can avoid dangerous pitfalls. Instead of chasing shiny objects hanging from the top branches, we can use our basic understandings to discern whether or not such a leap of faith is worthwhile. This is not to say that new discoveries cannot be made. However, there is a reason why we didn’t go from horse and buddy to Tesla sports cars. Discovery is progressive in nature and doesn’t seem to take such wild quantum leaps like we may think.

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