Eccentric Training: The Power of the Negative

The eccentric portion of a lift—the lowering phase—is often rushed or ignored. But research shows eccentric training produces unique adaptations that can accelerate muscle growth, build strength, and rehabilitate injured tendons. Here's how to harness the power of the negative.

Understanding Eccentric Contractions

The Three Contraction Types

Concentric: Muscle shortens under load (lifting the weight) Isometric: Muscle holds without changing length (holding position) Eccentric: Muscle lengthens under load (lowering the weight)

What Makes Eccentric Special

You're stronger eccentrically:

• Most people can lower 20-40% more weight than they can lift
• Fewer motor units needed for same force
• Different muscle mechanics

Eccentric creates more damage:

• Greater mechanical stress on muscle fibers
• More muscle protein breakdown (signals for growth)
• More soreness (DOMS)

Eccentric builds different adaptations:

• Longer muscle fascicles
• Strength at longer muscle lengths
• Greater hypertrophy potential
• Tendon strengthening

Benefits of Eccentric Training

Muscle Growth (Hypertrophy)

Research shows:

• Eccentric training produces similar or greater hypertrophy than concentric
• Muscle damage and mechanical tension are growth signals
• Eccentric emphasis may be particularly effective

Strength Gains

• Builds strength at longer muscle lengths
• Improves force absorption ability
• Develops eccentric-specific strength (useful for deceleration)

Tendon Health and Rehabilitation

Eccentric training is THE primary treatment for:

• Achilles tendinopathy
• Patellar tendinopathy (jumper's knee)
• Tennis and golfer's elbow
• Rotator cuff tendinopathy

Why it works:

• Stimulates collagen synthesis
• Promotes tendon remodeling
• Loads tendon progressively
• Reduces pain over time

Injury Prevention

• Eccentric strength protects against strains
• Hamstring eccentrics prevent hamstring injuries
• Prepares muscles for deceleration demands

Eccentric Training Methods

Tempo Eccentrics

What it is: Slowing down the lowering phase of normal exercises.

How to do it:

• Lower for 3-5 seconds (instead of 1-2)
• Control throughout range
• Normal or faster concentric

Example (Bench Press):

• Lower bar to chest for 4 seconds
• Pause briefly
• Press up at normal speed

Programming:

• 3-4 sets of 6-10 reps
• Moderate weight (you'll need to reduce load)
• Can apply to any exercise

Supramaximal Eccentrics

What it is: Using more weight than you can lift concentrically.

How to do it:

• Load 105-120% of 1RM
• Lower slowly (5-10 seconds)
• Partner helps lift weight back to start
• OR use self-assist (leg press: lower with one leg, push up with both)

Example (Leg Press):

• Load 110% of normal
• Lower slowly with both legs (8 seconds)
• Push back up with both legs (partner assists if needed)

Caution:

• Requires spotter or machine with safety
• Very demanding—use sparingly
• High injury risk if done poorly

Programming:

• 3-5 reps
• 1-2 sets
• Full recovery between sets
• Once per week maximum

Negative-Only Training

What it is: Eliminating the concentric phase entirely.

How to do it:

• Start at top of movement
• Lower under control
• Partner or self-assist returns to start

Example (Pull-Up Negative):

• Jump or step to top position (chin over bar)
• Lower slowly (5-10 seconds)
• Step back up to top
• Repeat

Use case: Building strength toward exercises you can't yet perform (pull-ups, dips).

Programming:

• 5-10 reps
• 3-5 sets
• Progress by slowing descent

Accentuated Eccentrics

What it is: Adding extra load during the eccentric only.

How to do it:

• Use weight releasers
• Partner adds load at top (removes at bottom)
• OR hold extra dumbbell that you drop at bottom

Example (Bench Press with Weight Releasers):

• Load bar with normal weight
• Add weight releasers (extra load at top)
• Lower with full load (releasers drop at bottom)
• Press up lighter weight

Programming:

• Specialty technique for advanced lifters
• Requires equipment and/or spotters

Eccentric Isometrics

What it is: Combining slow eccentrics with pauses.

How to do it:

• Lower slowly (3-5 seconds)
• Pause in stretched position (2-3 seconds)
• Press or pull up

Example (Squat):

• Lower for 4 seconds
• Pause at bottom for 2 seconds
• Stand up

Benefits:

• Maximum time under tension
• Builds awareness of optimal position
• Teaches proper depth

Eccentric Training for Rehabilitation

Tendinopathy Protocol

The standard approach for tendon issues:

Phase 1 (Weeks 1-4):

• Eccentric-only exercises
• Slow tempo (3-4 seconds)
• 3 sets of 15 reps
• 2x daily
• Some discomfort okay (up to 5/10 pain)

Phase 2 (Weeks 5-8):

• Continue eccentrics
• Add progressive load
• 3 sets of 10-12 reps
• Reduce to once daily

Phase 3 (Weeks 9-12):

• Add concentric back in
• Progress to normal loading
• Maintain some eccentric emphasis

Specific Tendon Protocols

Achilles Tendinopathy:

• Eccentric heel drops off step
• Straight knee (gastrocnemius) and bent knee (soleus)
• 3 x 15, twice daily

Patellar Tendinopathy:

• Eccentric single-leg squat on decline board (25°)
• 3 x 15, twice daily
• OR Spanish squat eccentrics

Tennis Elbow:

• Eccentric wrist extension with light dumbbell
• 3 x 15, twice daily
• Tyler Twist with FlexBar

Post-Surgery Recovery

Eccentric training helps after:

• ACL reconstruction
• Rotator cuff repair
• Achilles repair

Timing: As directed by surgeon/PT (typically after initial healing)

Programming Eccentric Training

For Muscle Growth

Add tempo eccentrics to regular training:

• 3-4 second eccentrics on most exercises
• 2-3 exercises per workout
• Don't do everything slow—some normal tempo too

For Strength

Periodize eccentric phases:

• 2-4 week block of eccentric emphasis
• Supramaximal work 1x/week
• Return to normal training
• Repeat cycle

For Injury Prevention

Hamstring eccentrics for athletes:

• Nordic hamstring curls: 3 x 5-8, twice weekly
• Romanian deadlifts with 4-second lowering

Sample Eccentric-Emphasis Workout

Lower Body:

1. Squat — 4 x 6 @ 4-second eccentric
2. Romanian Deadlift — 3 x 8 @ 3-second eccentric
3. Walking Lunge — 3 x 10 each @ 3-second lowering
4. Nordic Curl — 3 x 5 (eccentric only)
5. Calf Raise — 3 x 12 @ 3-second lowering

Upper Body:

1. Bench Press — 4 x 6 @ 4-second eccentric
2. Weighted Pull-Up — 3 x 6 @ 3-second lowering
3. Overhead Press — 3 x 8 @ 3-second eccentric
4. Row — 3 x 10 @ 2-second lowering
5. Bicep Curl — 3 x 10 @ 3-second lowering

Recovery Considerations

Expect More Soreness

Eccentric training creates more muscle damage:

• DOMS will be significant (especially initially)
• Allow adequate recovery between sessions
• Don't do heavy eccentrics daily

Repeated Bout Effect

Good news:

• Soreness decreases with repeated exposure
• First session is worst
• Muscles adapt to eccentric demands

Frequency Guidelines

• Tempo eccentrics: Can do most sessions
• Supramaximal eccentrics: Once per week per movement
• Tendon rehabilitation: Protocol-specific (often 2x daily)

Common Mistakes

Dropping the Weight

Problem: Fast lowering wastes the eccentric phase.

Fix: Count 2-4 seconds minimum on every rep.

Going Too Heavy Too Soon

Problem: Supramaximal eccentrics with no base.

Fix: Build tempo eccentric work first, then progress to supramaximal.

Too Much Too Often

Problem: Heavy eccentric work every session.

Fix: Limit supramaximal work, allow recovery.

Neglecting Concentric Work

Problem: Only doing eccentrics.

Fix: Eccentrics complement concentric training, don't replace it.

Key Takeaways

1. You're stronger on the way down — Use this for training advantage
2. Slow eccentrics are accessible — Anyone can add 3-4 second lowering
3. Tendon rehabilitation requires eccentrics — Primary treatment for tendinopathy
4. More soreness expected — Eccentric training creates more muscle damage
5. Don't overdo supramaximal work — Very demanding, requires recovery
6. Injury prevention — Eccentric hamstring work prevents strains
7. Complement, don't replace — Add eccentric emphasis to normal training

The eccentric phase is too important to rush. Whether you're building muscle, rehabilitating a tendon, or preventing injury, controlled negatives deliver unique benefits that the lifting phase alone cannot provide.