martin rush & dave rowland eaa conference 2012
DESCRIPTION
Leeds Conference 2012TRANSCRIPT
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Race Walking
Martin Rush
National Coach Mentor
England Athletics,
Endurance
Dave Rowland
National Coach Mentor
England Athletics,
Sports Science Support
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Race Walking
Aim
-Provide a template for review and analysis of
walk technique
-Lead from this into anatomical framework and
strength and conditioning prescription
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Race Walking
Plan
-Video comparison from coach perspective of
walk action
-Summarising issues raised by analysis
-Breakdown of muscular skeletal issues
-Creating technical change
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Stride point:
Toe off
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Stride point:
Point of
maximum
heel height
on recovery
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Stride point:
Mid-stance,
Note heel
height/knee
angle
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Stride point:
Full stride
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Summary
-Similar flight times we have only one athlete attracting judging attention
-Height of recovering heel
-Angle of recovering shin with ground
-Height of foot above ground at mid-stance
-Drive upwards rather than forwards
-Potential causes
-Motor recruitment – skill learning
-Injury issues
-Physical conditioning issues
-Mobility issues
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Physical conditioning – what’s happening
-Greater lordosis
-Less ability to switch on hip flexors rapidly and generate power
-Leads to greater need to actively recover leg with hamstrings
-Leads to higher heel recovery
-Less hip rotation
-Greater need to get extension through back for stride length
-Less activation of SSR in hip flexors can result in a ‘cheat’ of using
hamstrings to shorten lever and aid recovery
-Reduces adductor contribution to recovery
-Greater hip drop
-Low recruitment of hip stabilisers
-Greater compensation of arm action across body
-Reduced ability to produce force off a ‘loose’ structure
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Muscle Function
No muscles ‘push’
‘Push’ created by levers and ‘pulling’
Fix one end/stability to pull and thus ‘push’
Stable pelvis essential
– Force production
• Muscular contraction
• Stretch Reflex
– Efficiency (minimal leakage)
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Trunk Stability
Pelvis central to force management
– Connects lower limbs to upper body
– 30+ muscles
Pelvic instability affects force production and
control
Failure to stabilise produces compensations
elsewhere
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Importance of trunk stability
Mechanical base for motion of the distal segments
Many extremity prime movers attach to the core
Deep muscles are active before initiation of extremity movement.
“Proximal stability for distal mobility”
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Conditioning
Movement Competence
Movement Quality
Train movements rather than muscles
– relationships
Control, ROM, Repetition, Load
Double Leg vs Single Leg (load)
Isolate, Static, Dynamic, Integrate
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Conditioning Develop physical qualities
– Strength, speed, power, strength endurance
Bring these together in the ‘event’
But develop outside of the ‘event’
Exercises unlikely to match the event
movement
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Adaptation Strength Endurance Stability
Name High Force
Strength
Strength
Endurance
Activation, core
stability, control
Intensity of
movement
>80% RM 60-80% <30% RM, skill
focus
RPE Hard to maximal Hard to maximal Moderate
Volume 3-6 sets, 1-6 reps,
5-8 s isometric
3-5 sets, 5-10 reps
30-60s isometric
3-5 sets, 10 + reps,
30-60s Isometric
Frequency 1-3/week 2-3/week >3/week - daily
Fatigue Not needed Necessary Necessary
Muscle adaptation Fast twitch
hypertrophy
Whole muscle Slow twitch
hypertrophy,
increase length
Functional
Adaptation
Increased force
capabilities
Increased strength
endurance
Improved
functional
movement
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Conditioning Interventions
Trunk
Hip Mobility
Lateral Stability
Hip Strength
Hamstring Strength
Adductor strength
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Intervention Options
Trunk 5 exercises
– Reverse crunch , heel lifts, Front Plank,
Aleknas, Loaded Plank
Hip Mobility
– BW Squat, SL Squat, Overhead Squat, Lateral
Squat, Split Squat, Duck walks
Lateral Stability
– Clams, Leg Lifts, SL Squats, Band Side walks,
Fire Hydrants (Stdg), Hop & Fix
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Intervention Options
Hip Strength
– Squats, Olympic Deadlifts, Romanian Deadlifts,
Bulgarian Squats, Step Ups, Split Bounds
Hamstring Strength
– Hip bridges, RDL, Elevated Split Squat, SL
RDL, FB Hip Lifts, Split RDLs
Adductor Strength
– Band Cross overs, Sumo Squats, Lateral
Squats
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Circuit
Glute
Medius
Hip
Mobility
SL
Adductor
Hamstring
Hip
Mobility
DL
Hip
Mobility
SL
Glute
Medius
Hamstring
3 sets 10-15 reps
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Dynamic, Integrated, Loaded
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Scheduling
Circuits ‘mixed
‘Series’
Strength Session
– 1-2 x /week (phase)
Before Training
After Training
Within Training
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Skill:Conditioning Links
Strong Heel; Rolling Foot
Strong Hip; Active pull
Flat Hips
‘Fix’ Stomach; pull on rope
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And here’s one we did earlier