Quick Overview

This study helps explain why many high-level basketball programs (including Michael Jordan and other NBA top performers) have explored adding EMS to strength training.

Researchers recruited 20 competitive Division 2 French league basketball players and divided them into two groups. Both groups continued their normal basketball training schedule. One group added 4 weeks of EMS training, three sessions per week.

Scientists measured knee extensor strength using an isokinetic dynamometer and tested vertical jump performance before and after the intervention.

After 4 weeks, the EMS group showed significant increases in eccentric and high-velocity strength, along with a 14% improvement in squat jump height. The control group showed no meaningful changes. After an additional 4 weeks of regular basketball training, the EMS group also improved countermovement jump performance, suggesting that the strength gains may transfer to explosive on-court movements.

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Introduction: Why We Created ORIEMS FIT Research Digest

At ORIEMS FIT, we believe people deserve clear, honest explanations about electrical muscle stimulation (EMS).

There are many claims online. Some are exaggerated. Some are confusing.

Our mission with the ORIEMS FIT Research Digest is simple:

• We read real university research.

• We simplify it into everyday language.

• We explain what it actually showed.

• We avoid hype.

• We do not make medical claims.

This article is educational only. It is not medical advice.

Today we are reviewing a published study titled:

“The Effects of Electromyostimulation Training and Basketball Practice on Muscle Strength and Jumping Ability.”

Original publication: International Journal of Sports Medicine (2000)

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What Is This Study About?

Main Question

Can 4 weeks of EMS training improve:

• Knee extensor strength?

• Vertical jump performance?

And if so:

• Are the improvements maintained with normal sports practice?

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Who Conducted the Study?

Researchers from:

• Université de Bourgogne (France)

• Aristotelian University of Thessaloniki (Greece)

• Faculté de Médecine de Saint-Etienne (France)

Published in:
International Journal of Sports Medicine (2000)

This is a peer-reviewed sports science journal.

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What Type of Electrical Stimulation Was Used?

The study used:

EMS (Electromyostimulation)

This is also called:

• NMES (Neuromuscular Electrical Stimulation)

It is designed to stimulate muscle contraction directly.

This is different from:

• TENS, which is mainly used for sensory nerve stimulation and discomfort modulation.

• FES, which is often used in neurological rehabilitation to assist movement.

This study focused on strength development, not pain.

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Who Was Studied?

• 20 male basketball players

• Division 2 French league

• Average age: 24.7 years

• All had 6–10 years of basketball experience

• None had previous EMS training experience

• No previous knee injuries

They were randomly divided into:

• EMS group (10 players)

• Control group (10 players)

How Did They Study It?

Study Design

• Randomized controlled design

• 8-week total duration

• 4 weeks EMS + basketball

• Followed by 4 weeks basketball only

EMS Training Protocol

Duration:

• 4 weeks

• 3 sessions per week

• 12 sessions total

• 16 minutes per session

Each session:

• 48 contractions

• 3 seconds contraction

• 17 seconds rest

Stimulation details:

• Frequency: 100 Hz

• Pulse duration: 400 microseconds

• Intensity: adjusted to produce 80% of maximal voluntary contraction

• Intensity ranged 60–100 mA depending on tolerance

Muscles stimulated:

• Vastus medialis

• Vastus lateralis (quadriceps)

Knee angle:

• Fixed at 60 degrees

Basketball Training

All players:

• 5 sessions per week

• 90 minutes per session

• Standardized by same coach

This controlled for training differences.

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What Was Measured?

Strength Testing

Using an isokinetic dynamometer:

Measured:

• Concentric strength (multiple velocities)

• Eccentric strength

• Isometric strength (multiple angles)

Jump Testing

Using a Bosco jump mat:

Measured:

• Squat jump (SJ)

• Countermovement jump (CMJ)

What Did They Find?

1️⃣ Strength Improvements After 4 Weeks of EMS

In the EMS group:

Eccentric Strength

• Increased 29% to 37%

High-Velocity Concentric Strength

• Increased 30% to 43%

Low-Velocity Concentric Strength

• No significant change

Isometric Strength

• Increased at angles close to training angle

Control group:

• No strength improvement

2️⃣ Squat Jump Performance

After 4 weeks EMS:

• Squat jump increased by 14%

Control group:

• No change

3️⃣ Countermovement Jump

After 4 weeks EMS:

• No immediate change

After additional 4 weeks basketball:

• CMJ increased by 17%

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What Does This Mean?

For Someone Considering EMS

This study suggests:

• Short-term EMS was associated with increased measured strength.

• Gains were more visible in:

  • Eccentric strength

  • High-speed contractions

• Squat jump improved within 4 weeks.

Why Might This Happen?

EMS recruits motor units differently than voluntary contraction.

Research discussion suggests:

• EMS may activate larger motor units earlier.

• Neural adaptations likely occurred before muscle size changes.

The authors suggest neural adaptation as the main mechanism.

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Safety Perspective

• No subjects reported serious discomfort.

• Intensity was self-adjusted.

• Participants were healthy athletes.

However:

• This does not mean EMS is suitable for everyone.

• People with medical conditions should consult a professional.

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Realistic Expectations

This was:

• Healthy trained athletes

• Structured protocol

• Supervised intensity

• 80% MVC target

This does NOT mean:

• Instant results

• Automatic performance gains

• Same effect in all populations

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Who Might Benefit?

Based on study population:

• Athletes

• People training for explosive strength

• People seeking neural activation support

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Who Should Consult a Professional?

• People with cardiac conditions

• Implanted medical devices

• Recent surgery

• Neurological disorders

• Pregnancy

• Chronic medical conditions

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For Someone Already Using EMS

This study supports:

• Consistency matters (3 sessions per week).

• High-intensity but tolerable stimulation was used.

• Angle-specific training effects were observed.

• Neural adaptation occurs first.

It also suggests:

• EMS does not replace sport practice.

• Performance transfer may require integration with movement training.

• CMJ improved only after additional functional practice.

EMS may support strength.
Movement training supports transfer.

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EMS vs TENS Clarification

This study used EMS/NMES, not TENS.

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Conclusion

This controlled study in trained basketball players showed:

• 4 weeks of EMS was associated with increased strength.

• Squat jump performance improved.

• Gains were maintained.

• Functional performance transfer required additional sport training.

EMS appears to be a stimulus that can enhance strength development under controlled conditions.

It is not a cure.
It is not a shortcut.
It is a tool.

We encourage readers to review the full paper for context.

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🔵 RESEARCH SUMMARY 

🔴 DISCLAIMER

This article is provided for educational and informational purposes only.

It is not medical advice.
It is not a diagnosis.
It is not a treatment recommendation.

ORIEMS FIT does not claim to cure, treat, prevent, reverse, or manage any disease or medical condition.

The research discussed reflects findings in a specific population under controlled conditions.

Individual results may vary.

Electrical muscle stimulation devices may not be suitable for everyone.

Readers should consult a qualified health professional before beginning any new exercise, stimulation, or strength training program.

This article does not replace professional medical care.

The information presented may not apply to all individuals.

ORIEMS FIT is not affiliated with the universities or institutions mentioned.

We do not claim endorsement by any research institution.

No guarantee of outcomes is made or implied.

Readers are responsible for their own health decisions.

ORIEMS FIT is committed to compliance with Australian TGA regulations.

No therapeutic claims are made.

We accept no liability for misuse of products.

We accept no liability for misinterpretation of this content.

No reproduction rights are granted without written permission.

 

ORIEMS FIT Research Digest makes complex research from top scientists and universities easy for anyone to understand—clear, simple, and never medical advice, just trustworthy science.

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