Identifying Opportunities for Strength Development in Cyclists · •Strength training must be done...
Transcript of Identifying Opportunities for Strength Development in Cyclists · •Strength training must be done...
Identifying Opportunities for
Strength Development
in Cyclists
Derek M. Hansen, CSCS www.StrengthPowerSpeed.com
@DerekMHansen
“I would like to be a better cyclist!”
What exercises or drills can I do?
What can I do?
Cycling Performance: Contributing Elements
Performance Improvement: Making it Possible
• Choosing correct amount of each individual training
element
• Integrating elements appropriately throughout the
day, week, month, year
• Appropriate progression of training volume,
intensity and complexity
• Proper insertion of rest and recovery
• Execution of work with optimal mechanics
Development Priorities
Al Vermeil’s Pyramid of Athletic Development
Modular Development Pyramid – D.Hansen
Cycling Research – Strength Training Effects
• Zoladz et al. 2012 – Isometric strength training
lowers 02 cost of cycling during moderate-intensity
exercise
• Untrained young men increased force during MVC
of knee extensor muscles over 7 weeks by 19%
• Compatible with the increased running economy
and cycling efficiency observed after strength
training in endurance athletes
Cycling Research – Optimizing Strength Training
• Ronnestad and Mujika, 2014 – Combining endurance
training with heavy or explosive strength training for
endurance athletes
• Heavy strength training favored for improving cycling
economy
• Explosive training and heavy strength training better for
endurance runners
• Mechanisms for improvement:
• Improved neuromuscular efficiency
• Fibre conversion – 2X to 2A fibres (more fatigue resistant)
• Improved musculo-tendinous stiffness
• Potential negative outcomes – muscle hypertrophy
Cycling Research – Optimizing Strength Training
• Ronnestad and Mujika, 2014
Cycling Research – Strength Training Improves Economy
• Sunde et al., 2010 – Improvement in CE without any
decline in maximal oxygen consumptions
• Maximal strength training improves time to exhaustion at
maximal aerobic power
• A 5% improvement in CE could account for a 5%
improvement in time performance over distance
• Suggest a protocol of 4 x 4RM for two to three times per
week using half-squats
Cycling Research – Strength Training Improves Economy
• Sunde et al., 2010
Cycling Research – Strength Training and Pedal Rate
• Hansen et al., 2007 – Strength training reduces freely
chosen pedal rate during sub-maximal cycling
• It has been suggested that subjects pedal fast to reduce the
perception of force
• Training group increased strength over 12 weeks by 20% in
squat and 12 in leg curl exercises
• Freely chosen pedal rate was reduced by 8 and 10 rpm
during cycling at 37% and 57% of max power output
• Accompanied by a 3% lower rate of energy expenditure
Cycling Research – Strength Training and Pedal Rate
• Hansen et al., 2007
Cycling Research – Muscle Coordination Patterns
• Blake et al. 2012 – examined surface EMG,
kinematics and pedal forces at various level of
VO2max
• Found that at 55-60% of VO2max, mechanical
efficiency was maximized and highly related to
muscle coordination patterns
• High efficiency cycling had:
• More gastroc and soleus
• Less glute, quad and tibialis anterior
• Later lower quad and biceps femoris
• Earlier semintendinosus
• Greater foot plantar-flexion on downtroke and greater
dorsi-flexion on upstroke
Cycling Research – Core Strength and Fatigue
• Abt et al. 2007 – Looked at core stability fatigue
and impact on cycling mechanics
• Pre-fatigued subjects with core exercises, then
tested them on cycling treadmill
• Cycling kinematics changed but pedal forces
through cranks did not
• Body compensates to maintain pedal forces by
changing cycling kinematics in conditions of core
muscle fatigue
• Implications for chronic injury
Where Do We Go From Here?
• Strength training for cyclists – of all types and
distances – is useful
• How do we make sure we do it right?
• Who do we trust?
• Strength must be a means to and end, not an end in
itself
How Strong is ‘Strong Enough’?
The Issue of Specificity
• Cycling is the best thing you can do for training
• Strength training must be done in parallel with cycling
training (coordination and transfer)
• Cycling training can be arranged to elicit strength
benefits:
• Speed Training - max effort for 15 sec or less (force development,
CNS enhancement)
• Hill training – short hills (strength and anaerobic power)
• Hill training – long hills (strength endurance and aerobic power)
The Issue of Specificity
Implications for Training – Speed Reserve
Choosing Strength Training Exercises
• Weight training must be maintained as a “general”
strength input and not be too specific
Training with Weights – Issues to Explore
• Free weights vs machines
• High reps vs low reps
• Heavy weight vs low to moderate weight
• Olympic lifting vs simple exercises
• Bilateral vs unilateral exercises
• Alternatives to weightlifting
•Free Weights vs Machines
• Free weights simulate ‘natural’ movement patterns
• Free weights require more instruction and supervision
• Machines – taking the coordination component out of
lifting to free up the CNS
• Combining the two methods – best of both worlds
High reps/Low Load vs Low Reps/High Load
• High load – improved muscle fibre recruitment
• Greater recovery between sets required
• Low dosages of heavy weight at low reps go a long
way
• High reps and low loads are still useful for developing
work capacity, strength endurance and connective
tissue strength
• But the weight room should not be a place for training
endurance
Olympic Weightlifting vs Simple Exercises
• Highly dependent on equipment and coaching
availability
• Olympic weightlifting has components of maximal
strength and power
• Maximal strength can still be developed through
squatting, dead-lifts and step-ups
• Velocity and power can be achieved through other
means (jumps, plyometrics, med-ball throws)
Bilateral vs Unilateral
• Bilateral – higher loads, greater activation and
recruitment
• Unilateral – greater stability requirement, lower
loads, perception of specificity
• Integrate both modes as part of your training
• Ordering in a session: Higher loads early, lower
loads later
Alternative Methods
• Resistance bands
• Medicine ball
• Jumps and plyometrics
• Electrical muscle stimulation
Resistance Bands
• Commonly used for joint rehab and injury
prevention
• Light to moderate resistance
• Concern – opposite to normal force-velocity curve
(easier over short ROM, harder at greater ROM)
Resistance Bands
Medicine Balls
• Explosive throws – 4-10 reps – for maximal
recruitment and power
• Circuit throws – 10 reps and up – for general
strength
• Lower time under tension, higher velocities
• Athletes report feeling lighter and more responsive
as compared with weight training
Medicine Balls – Explosive Throws
Jumps and Plyometrics
• High velocity body weight movements that require
more forceful muscle recruitment
• Can build concentric, eccentric and elastic strength
• Effective at increasing performance, but can be
higher risk in terms of acute and chronic injuries
(i.e. tendon injury)
Jumps and Plyometrics
Jumps and Plyometrics
Electrical Muscle Stimulation
Electrical Muscle Stimulation
Electrical Muscle Stimulation
Electrical Muscle Stimulation
Planning and Integration of Work
• 2-3 sessions per week should be adequate
• 3 sessions per week – off-season
• 1-2 sessions per week – in-season
• Emphasis on quality of work and intensity, not
volume
The Value of High Intensity
Questions?