Are TENS and EMS Still Useful Today? A 2025 Pain Research Review Reveals What Works, What Doesn’t, and What’s Changing

person Savannah Martin
calendar_today Jan 15, 2026
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Quick Overview

This 2025 Journal of Pain Research review analysed hundreds of studies comparing EMS and TENS.

The review shows EMS consistently produces measurable muscle contractions, activating motor neurons and recruiting more muscle fibres, while TENS mainly alters pain perception, which is subjective.

EMS outcomes such as muscle activation, strength, and coordination can be objectively recorded, making results more repeatable and reliable. The authors note EMS can match or exceed voluntary training in some studies, whereas TENS evidence is mixed due to small samples and inconsistent settings, making EMS scientifically more consistent overall.

Oriems Fit Research Digest – Introduction

This article is part of the Oriems Fit Research Digest series.

In this series, we share interesting and trustworthy scientific research in very simple language.
We do this to spark curiosity, help people learn, and encourage self-research.

At the end of every post, we always include links to the original research paper.
If you enjoy collecting studies or checking facts, you can go directly to the source.

This article does not give medical advice.
It simply explains what scientists are currently discussing in research.

Who Did This Research and When?

This paper was written by a group of researchers and clinicians from the United States.

Main research centres involved:

Houston Methodist Hospital – Neuroscience Centre
UCLA David Geffen School of Medicine
University of Wisconsin School of Medicine
Pain medicine and rehabilitation centres in the USA

The paper was published in 2025 in the Journal of Pain Research, a peer-reviewed international journal.

Some authors work in clinical pain management, and some are involved in medical technology research.

What Type of Study Is This?

This is a review study.

That means:

❌ No new patients were tested
❌ No new EMS or TENS sessions were run
❌ No new pain or blood results were measured

Instead, the researchers:

Reviewed hundreds of existing studies
Compared TENS vs EMS
Explained how they work
Explained why results are sometimes inconsistent
Discussed future improvements

What Is This Research About?

The paper reviews two types of electrical stimulation:

1️⃣ TENS (Transcutaneous Electrical Nerve Stimulation)

Focuses on nerves
Mainly used for pain perception
Does not aim to create strong muscle contraction

2️⃣ EMS (Electronic / Electrical Muscle Stimulation)

Focuses on muscles
Creates real muscle contractions
Used for strength, activation, and rehabilitation

The researchers wanted to answer:

Why does EMS often show stronger physical effects than TENS?
And how can both technologies improve in the future?

What Did the Review Find About TENS?

The review explains that TENS:

Works mainly by changing how pain signals are felt
Uses mechanisms like:
- Gate control theory
- Endorphin release
- Nervous system modulation

However, the authors also clearly state:

Many TENS studies have small sample sizes
Stimulation settings are often inconsistent
Results are mixed, especially in chronic pain

This makes TENS helpful for some people, but harder to prove consistently.

What Did the Review Find About EMS?

The review describes EMS as mechanically stronger.

EMS:

Activates motor neurons
Recruits more muscle fibres
Can improve:
- Muscle strength
- Muscle activation
- Neuromuscular coordination

The review highlights that EMS:

Can match or exceed voluntary muscle training in some studies
Is widely used in rehabilitation, post-surgery, and neurological recovery
Has clearer physical mechanisms than TENS

This is because muscle contraction is measurable, while pain perception is subjective.

Why Do Researchers See EMS as More Reliable?

According to the review:

Muscles either contract or they don’t
Strength can be measured
Muscle activity can be recorded

This makes EMS:

Easier to study
Easier to standardise
Easier to improve with technology

What New Advancements Are Discussed?

The paper explains that modern systems are moving toward:

Better control of stimulation settings
More personalised programs
Combining EMS + TENS
Using software and automation to reduce user error

Researchers believe future systems will:

Improve consistency
Improve user experience
Improve real-world outcomes

Are TENS and EMS still relevant today?

✅ Yes, they are still relevant.

But they are relevant in different ways.

Why TENS is still relevant

According to the review:

TENS is still used because it:

Is non-invasive
Is drug-free
Can help some people change how pain is perceived
Has a good safety profile
Is widely used in home and clinical settings

However, the researchers also say:

Evidence is inconsistent
Results vary a lot between people
Pain relief is subjective
Many studies are methodologically weak

👉 So TENS is relevant, but its effectiveness is unpredictable.

Why EMS is still relevant

The review strongly supports the continued relevance of EMS because:

EMS:

Produces real muscle contractions
Activates motor neurons
Improves muscle strength and coordination
Is widely used in rehabilitation, recovery, and training
Has measurable physical outcomes

Because muscle activation can be measured, EMS:

Is easier to study
Shows more consistent results
Fits well with modern rehabilitation and wellness trends

👉 EMS remains highly relevant because muscle activation is objective and reproducible.

What Does Research Suggest When Comparing EMS And TENS?

This research review suggests EMS may show more consistent results than TENS in scientific studies.

Researchers explain that TENS mainly affects how pain is perceived, which is subjective and varies between people. Many TENS studies use different settings and small sample sizes, making results harder to reproduce.

In contrast, EMS activates motor neurons and creates measurable muscle contractions. Muscle activity, strength, and coordination can be objectively measured, making EMS outcomes easier to study and compare. Because of this, the review notes that EMS evidence appears more reliable and repeatable than TENS in research settings.

Why Could This Matter for EMS Users?

This review helps explain:

Why EMS feels more “active” than TENS
Why EMS is often used for muscle support and activation
Why modern EMS devices focus on muscle engagement, not just sensation

It helps people understand what EMS is designed to do, without making medical claims.

Research Paper Details

Original paper title:
Latest Advancements in Transcutaneous Electrical Nerve Stimulation (TENS) and Electronic Muscle Stimulation (EMS): Revisiting an Established Therapy with New Possibilities

Study type:
Scientific review (not a clinical trial)

Published in:
Journal of Pain Research (2025)

Link to original study: https://doi.org/10.2147/JPR.S493162

Why this source is trustworthy:

Peer-reviewed journal
Written by clinicians and researchers
References hundreds of prior studies
Published in an established pain research journal

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Summary Table – At a Glance

Topic	What the Review Says
Study type	Review paper
New experiments	No
TENS	Mixed evidence, nerve-based
EMS	Stronger muscle activation evidence
Muscle contraction	Key advantage of EMS
Journal	Journal of Pain Research
Year	2025