Movement Efficiency and Economy: Training for Better Performance

Movement efficiency determines how much energy you expend to perform a given task. Whether you're running, lifting, or playing sports, better efficiency means better performance with less fatigue. This guide explains how to optimize your movement economy.

What Is Movement Efficiency?

Definitions

Mechanical efficiency: The ratio of work output to energy input

• Higher efficiency = more work for same energy cost
• Perfect efficiency (100%) is impossible due to heat loss

Movement economy: Energy cost to perform a specific task at a given intensity

• Example: Oxygen consumption while running at 6:00/mile pace
• Better economy = less energy for same performance

Why Efficiency Matters

For endurance athletes:

• Lower energy cost per unit distance
• Faster pace at same effort level
• Better performance at all distances

For strength/power athletes:

• More force per unit of effort
• Less wasted energy
• Better performance under fatigue

For general fitness:

• Less fatigue during daily activities
• More work capacity
• Better overall function

Components of Movement Efficiency

1. Technical Efficiency

How well you execute the movement pattern.

Contributing factors:

• Movement skill/coordination
• Muscle activation patterns
• Sequencing and timing
• Force application direction

Improvement: Practice, coaching, motor learning

2. Metabolic Efficiency

How efficiently your body produces energy.

Contributing factors:

• Oxidative capacity (aerobic)
• Glycolytic capacity (anaerobic)
• Substrate utilization
• Mitochondrial function

Improvement: Appropriate conditioning, nutrition

3. Elastic Efficiency

How well you store and return elastic energy.

Contributing factors:

• Tendon stiffness
• Stretch-shortening cycle function
• Reactive strength
• Muscle-tendon interaction

Improvement: Plyometrics, heavy strength training, running

4. Anthropometric Efficiency

Body structure affects efficiency for specific movements.

Factors:

• Limb lengths (moment arms)
• Body proportions
• Muscle attachment points
• Body composition

Influence: Limited ability to change, but technique can adapt

Running Economy: A Case Study

What Determines Running Economy?

Better running economy:

• Lower oxygen consumption at a given pace
• Can run faster at the same effort
• Major factor in distance running success

Contributing factors:

• Stride mechanics
• Ground contact time
• Elastic energy return
• Metabolic efficiency
• Body composition

Improving Running Economy

Training factors:

• High mileage (up to a point)
• Interval training
• Plyometrics
• Strength training
• Hill running

Technical factors:

• Cadence optimization (often 170-180 steps/min)
• Vertical oscillation minimization
• Arm swing efficiency
• Foot strike appropriate to pace/terrain

Physical factors:

• Lower body weight (less mass to move)
• Tendon stiffness (better elastic return)
• Muscle strength (less relative effort)

Strength Training Efficiency

Efficient Lifting

Characteristics of efficient lifting:

• Force applied in direction of movement
• Minimal energy leakage
• Optimal positioning
• Appropriate bracing

Bar Path Efficiency

Example: The squat

• Efficient: Bar stays over mid-foot throughout
• Inefficient: Bar drifts forward, requiring correction
• Energy spent correcting = wasted effort

Example: The bench press

• Efficient: Diagonal bar path, optimal leverage
• Inefficient: Straight up or excessive arc
• Touch point affects efficiency

Improving Lifting Efficiency

Technical practice:

• Submaximal work focusing on positions
• Video analysis
• Coaching feedback

Specific strength:

• Address weak points
• Build stability where needed
• Strengthen limiting muscles

Mobility:

• Achieve positions without fighting restrictions
• Full ROM without compensation

Elastic Energy and Efficiency

The Role of Tendons

Tendons act as springs:

• Store energy during eccentric loading
• Return energy during concentric phase
• "Free" force that doesn't require muscle work

Better tendon function = better efficiency

Training Elastic Efficiency

Plyometrics:

• Improve stretch-shortening cycle
• Increase tendon stiffness
• Enhance reactive strength

Heavy strength training:

• Increases tendon stiffness over time
• Requires consistent heavy loading
• 12+ weeks for tendon adaptation

Sport-specific practice:

• The activity itself trains elastic efficiency
• Running makes you better at running
• Jumping makes you better at jumping

The Stiffness-Efficiency Connection

Appropriate leg stiffness:

• Reduces ground contact time (running)
• Increases elastic energy return
• Improves force transmission

This is why plyometrics improve running economy.

Energy Leakage

What Is Energy Leakage?

Energy that goes somewhere other than propulsion or force production.

Examples:

• Excessive lateral movement
• Unwanted rotation
• Unstable joints collapsing
• Poor force transmission through core

Common Sites of Leakage

Core instability:

• Force generated by hips/legs lost at midsection
• "Soft" transmission reduces output
• Common in lifting and running

Ankle collapse:

• Excessive pronation or supination
• Energy absorbed instead of returned
• Affects running economy significantly

Knee valgus:

• Energy going laterally instead of forward/up
• Power leakage in jumping/sprinting
• Often a hip strength issue

Fixing Energy Leakage

Identify the problem:

• Video analysis
• Coaching observation
• Performance testing

Address the cause:

• Stability training for unstable areas
• Mobility work for restrictions
• Strength for weakness
• Technique practice

Measuring Efficiency

Laboratory Measures

Oxygen consumption (VO2):

• Energy cost at given workload
• Lower VO2 at same pace = better economy
• Gold standard for running/cycling economy

Mechanical efficiency:

• Work output / Energy input
• Typically 20-25% for cycling
• Higher for skilled movements

Field Measures

Performance at fixed effort:

• Pace at given heart rate
• Distance in time trial
• Improve over time = better economy

Technique analysis:

• Video review
• Movement quality assessment
• Comparison to efficient movers

Tracking Improvement

Regular testing:

• Consistent conditions
• Same protocol
• Track over months/years

Expect slow change:

• Economy improves gradually
• 1-3% improvement per year is significant
• Years of training accumulate

Factors That Worsen Efficiency

Fatigue

Tired muscles:

• Altered movement patterns
• Increased energy cost
• Compensation patterns emerge

Mental fatigue:

• Reduced focus
• Technique deterioration
• Higher perceived effort

Poor Recovery

Inadequate sleep:

• Coordination impaired
• Higher energy cost
• Performance decrements

Under-fueling:

• Metabolic efficiency reduced
• Substrate availability affected
• Performance suffers

Inappropriate Equipment

Footwear:

• Wrong shoes for the task
• Excessive weight
• Poor fit affecting mechanics

Clothing:

• Restrictive movement
• Temperature regulation issues
• Unnecessary drag (cycling, swimming)

Environmental Conditions

Heat:

• Increased cardiac demand
• Higher energy cost
• Performance impact

Altitude:

• Reduced oxygen availability
• Increased ventilation
• Economy affected

Training for Efficiency

General Principles

Practice the skill:

• Efficiency improves with repetition
• Deliberate practice most effective
• Technical focus in fresh state

Build relevant fitness:

• Strength for stability
• Conditioning for metabolic efficiency
• Plyometrics for elastic efficiency

Remove limitations:

• Address mobility restrictions
• Correct muscle imbalances
• Improve body composition

Sport-Specific Recommendations

Running:

• High volume (within recovery capacity)
• Plyometrics / hill sprints
• Strength training for lower body
• Cadence/form drills

Cycling:

• High volume
• Pedaling drills
• Core stability
• Position optimization

Swimming:

• Technique focus (most potential for improvement)
• Drills
• Position work
• Efficient turns/starts

Lifting:

• Technical practice at moderate loads
• Address weak points
• Build stability
• Video analysis

Key Takeaways

1. Movement efficiency = less energy for same output (or more output for same energy)
2. Components: Technical, metabolic, elastic, anthropometric
3. Practice improves efficiency—repetition builds skill
4. Elastic energy is "free"—tendons store and return force
5. Energy leakage from instability or poor mechanics wastes effort
6. Strength training improves economy in many activities
7. Plyometrics enhance elastic efficiency through tendon adaptation
8. Fatigue worsens efficiency—train technique when fresh
9. Improvements are gradual—accumulate over months and years
10. Sport-specific training is most effective for economy in that sport

Better efficiency means better performance at every level. Focus on technique, build appropriate fitness, and train consistently to accumulate the small improvements that lead to significant performance gains.