speed football consortium plyometrics presentation
TRANSCRIPT
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{“Plyometrics”
Elements, Theory and Practical Uses for Track and Field (and Team Sport) Athletes
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Introduction
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Influences
Inno-Sport
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Where I’ve been
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Where I’m going
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“Plyometrics” were initially called “shock training”, as they generally referred to depth jumps, and similar, intense jump exercises.
Brought to America in the 1960’s A term broadly mis-used by fitness gurus
(it sounds cool, and has athletic implications), and mis-understood by coaches (do it, and you’ll jump higher!)
Plyo…. What?
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Technically, anything that trains/overloads the stretch shortening cycle. This is a very broad and complex definition. Even walking could be “plyometric” for some populations.
To overload the stretch shortening cycle for athletes, you have to understand the nature of overload!What are some examples of plyometric exercises? (the real ones)
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Ranking of Plyometric Intensities
Altitude DropDepth JumpDrop JumpMulti Jumps (Standing Triple Jump)Maximal Multi Response Jumps (Hurdle Hops)Sprinting/HurdlingShot Throws and Multi ThrowsSubmaximal Multi Response JumpsSkipping (Begin “Vibration” Level)Hopscotch/RudimentJump RopeJoggingRace Walking
A spectrum of overload
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Plyometrics…. Incognito
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Plyometrics….incognito!
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Plyometrics…. Incognito, cont.
Plyometric training, strength training, speed training are NOT separate motor qualities. According to Frans Bosch: “Speed, stamina and coordination may be so closely linked that No clear, generally applicable training strategy can be devised on the basis of distinctions between basic motor properties.
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Plyometrics are the “icing on the cake” of a good, well rounded program.
High drops yield extreme levels of muscle activation and CNS output, as well as increased chance of joint micro-trauma
Keep the ratio of speed to high force work in favor of speed (5/1)
Speed is the base
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Muscular/Tendon Reflexive (proprioceptive) Motor Learning (variability!)
Three Types of Overload
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Plyometrics that are useful enough for overload for most athletes with a few years of training experience
Depth Jump Drop Jump (speed contact version of
depth jump) Altitude Drop Hurdle Hops, Double/Single Leg
(maximal) Combinations (variability)
Standard Overload Plyometrics (Vertical)
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https://www.youtube.com/watch?v=ApR1jyB1o1
Football https://www.youtube.com/watch?v=h3Sz
4w-YLgA
Target https://www.youtube.com/watch?v=
J_uYlYL8E40 hurdle
Depth Jump Videos
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Stand on a scale and perform a squat, it might say 400-600lb during the reversal of the movement
Stand on top of a 36” box, and drop down onto a scale. For a peak moment in time, that scale will read 1000lb, or more!
It’s all a function of overload (especially eccentric)! Depth jumps provide an overload that is evenly
distributed through the legs, spine, trunk and limbs, where barbell training does not evenly distribute forces (higher % on the spine)
Barbells are playing checkers, while depth jumps play chess, as far as jumping is concernedAnatomy of the Depth
Jump: The Foundational Plyometric
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The eccentric portion of muscle loading can store 140-160% of the forces that can be displayed in the concentric portion.
Much of the muscle action during plyometrics is “explosive-isometric”. This is an important consideration in light of muscle coordination and exercise selection.
The concentric (up) portion of a jump is made in the quality of the eccentric portion.
Note the landing (grass!)
It’s all about the Eccentrics!
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Depth jumps are great because: You can fine tune the nature of the
overload (12” box vs. 48” box) You can fine tune the projection angle of
the drop (angle you fall at, and angle you jump at)
You can fine tune the outcome goal, which gives a huge sensorimotor boost to the task, and improves power output
There is no other plyometric where this possibility exists with as much flexibility
Depth Jump/Drop Jump
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Advanced and Beginner Depth Jumps (heel strike)
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I use it early to teach depth jumping I would call that, depth drop Higher intensity = Altitude drops Recommended for max recruitment I like dynamic versions Too much landing segments things Mature and ready athletes “Nitrous Boost”
Altitude Drop
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Longer in ground contact time Can actually have more transfer to two
leg jumps off the run due to this nature More of a GPP exercise for track jumps,
moreso than an SPP exercise Build the “explode” quality (reversal
power) Do them over a hurdle!!
Single Leg Depth Jumps?
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Great for building motor skills and the neuromuscular skill of “drive”
Can teach jumping from an overspeed perspective
Great in use with French Contrast methods
Build finishing power Great early progression https://www.youtube.com/watch?
v=THkJzgjueIg
Assisted Jumps
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Kinematic and kinetic variations among three depth jump conditions in male NCAA division III athletes
Compared three types of depth jumps: control, hurdle, and to vertec
Hurdle and vertec groups jumped higher
Hurdle group decreased GCT by 25% Decreased GCT was from decreased
knee bend, and increased force in hips and ankles.
Vertec group jumped higher because of increased knee bend and torque moment in knees.
An interesting research study
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Football Season Acceleration Basketball Season “Force” Plyometrics Track Season “Speed” Plyometrics
High school “periodization”
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DJ to hurdle jump 2 hurdle hops to high hurdle hop DJ to long jump/triple jump
Measurement! What you measure you improve
Your body is either measuring, or solving a motor/movement puzzle… if you want to get better
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Multi Jumps (Standing Triple Jump) Bounds from various run-ins (TJ) Depth jump to long jump/triple jump Maximal shot throws for distance
Standard Overload Plyometrics (Horizontal)
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https://www.youtube.com/watch?v=eTI4JyVzf7U
Auburn football
Bounding Complex
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The body needs variability not to…. explode.
Variations in the plant. Similarities in the finish!
Dunk training is a sensorimotor orchestra for track jumpers, along with teaching lots of fluctuation in plant type, but similar finishes (attractors)
Motor Learning Overload
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Long jumpers were assigned into two groups: Jump as far as possible, and jump for various distances each jump.
The group that jumped for various distances on the spectrum actually jumped farther in the end. The path of their CNS was broader than the group that only attempted maximal efforts!Rewzon’s Long Jump
Study
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The CNS needs variation to assess all the possibilities of movement in-between known skills
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“Repetition without Repetition” Bernstein “We do not learn by constantly repeating the
same solution to a movement problem, but by constantly solving a new movement problem” Bernstein in Strength Training and Coordination
Use an array of explosive coordination efforts to build your jumping ability: depth jumps, standing triple, overhead shot, 10m fly.
Apply sport movements to depth jump outcomes Basketball layup/dunk concept, applied to jumps
Repetition without repetition
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The “path” of the CNSTeam sport anecdotes: Transition of bball to track
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Variable Bounding Variable box to box jumps Variable hurdle jumps Just go play a sport for 30-45 min (and
don’t get hurt!)
In practice
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Track athletes on average, need more variability in their plyometric training (after a while)
Team sport athletes need to keep their plyometric training simpler (quality! Single responses). Need more overload.
The issue of variability
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Time Frame Specific Jumps
Shock Plyos Variable Jumps
Early Qualitative (low)Outcome GamesMid Short-Med
Approach (Outcome)
(high)Outcome
Structured
Late Full Approach, Variable
Quantitative Maintain
Seasonal Progressions
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Speed/Acceleration (100-250m) Measured Multi-Jumps (STJ x3 reps) Varied Specific Jumps (x10 reps) “Specific” Specific Jumps (x10-15) Depth Jump over Hurdle (x10) Bound Complex (1x20m) OR Shot Throws (x5-10)
Sample Training Days
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Acceleration/Sprint-Float (200-300m) Multi-Jumps (STJ x 3-5) Jump variations/box drills (x10-15) Specific Jump work (x6-10) Hurdle Hops (spaced 5-6’) (5x4) Variable Bounding (x50-100m) Shot Throws (x5-10)
Sample Training Days
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https://www.youtube.com/watch?v=uHGz3Li2cv4
Russian Video
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Jump Training for All Sports. Starzynski “The Science of Jumping” Tom Butler Periodization Training for Sport: Bompa Strength Training and Coordination: An
Integrative Approach. Bosch Special Strength Manual for Coaches:
Verkhoshansky Vertical Ignition, 1st Edition (get 20% off,
code is “incognito”)
Recommended Reading