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Treadmill vs. road: which running surface is safer for your achilles?

NCT ID NCT06294093

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 48 regular runners to see if running on the road versus a treadmill changes the Achilles tendon structure, muscle strength, balance, and sense of position. Researchers used ultrasound and simple tests to compare the two groups. The goal is to understand if one surface might lead to fewer Achilles injuries.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help runners choose safer training surfaces to reduce Achilles tendon injuries.
What could go wrong
This is a small observational study with only 48 participants, so results may not apply to all runners. It does not test any treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

48 people

The number who actually took part.

Started

Jun 2024

Finished

Aug 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

healthy runners who run on a regular basis, without injuries or pain during the last 6 months

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * run regularly at least twice a week for half an hour, * over 80% of the training on a treadmill or road Exclusion Criteria: * pain or injury to Achilles tendon during the 6 months, preventing running for at least 3 days. * past Achilles tendon surgeries, * sprained ankle in the last six months, * lower limb and back pain while running * participants who report running with minimalist shoes.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • The Academic College at Wingate

    Netanya, Israel

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