Clinical trial Recruiting at 1 site Interventional Ages 18 to 64 Men only

Strength training effects on recovery after Achilles tendon rupture

Official title: Effects of Strength Training at Different Intensities on the Plantar Flexors' Functional, Neuromuscular, and Tendon Properties After Achilles Tendon Rupture

Run by Federal University of Rio Grande do Sul · NCT06912269 · Data updated 2026-11-12

This study is testing how different levels of strength training can help men recover better after an Achilles tendon rupture.

Quick facts

Study typeInterventional
Ages18 Years to 64 Years
SexMen only
Enrollment67 (estimated)
SponsorFederal University of Rio Grande do Sul
Academic / other
Locations1 site (Porto Alegre, Rio Grande do Sul)
StatusRecruiting
StartedOctober 10, 2024
Main results expectedAugust 20, 2026
Study endsAugust 30, 2026
Registry record updatedJanuary 30, 2026
Trial IDNCT06912269 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are men aged 18 to 64 who have experienced a unilateral Achilles tendon rupture within the last five years and are not currently engaged in regular calf strength training.

Probably not a fit

Patients who have undergone non-surgical treatment for their Achilles tendon rupture or have a history of complications may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the impact of different intensities of strength training on the functional, neuromuscular, and tendon properties of the plantar flexors in men who have suffered a unilateral Achilles tendon rupture. It aims to address the long-term deficits associated with this injury, such as reduced muscle force and increased muscle activation. Participants will engage in a structured strength training program to evaluate how varying intensities influence recovery outcomes. The study seeks to fill a gap in existing literature regarding the optimal strength training approach for this specific injury.

Why it matters

Potential benefit: If successful, this study could enhance recovery strategies for patients with Achilles tendon ruptures, leading to improved muscle function and reduced long-term deficits.

How similar studies have gone: While there is limited literature specifically addressing strength training post-Achilles tendon rupture, similar studies on strength training adaptations have shown promising results in other contexts.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Men aged 18 to 64 who have ruptured their Achilles tendon unilaterally no more than 5 years ago;
* Who are not performing systematic and regular calf strength training.

Exclusion Criteria:

* Non-surgical treatment for Achilles tendon rupture;
* History of postsurgical complications (infection or re-rupture);
* Presence of any type of ankle injury in the last six month;
* Participation in a strength training program for plantar flexors in the last six months prior to participation in the study;
* Having heart failure; autoimmune diseases; and/or diabetes;
* Systematic use of antibiotics or steroids within the last 12 months;
* Presence of any other clinical contraindication for performing maximum strength tests.

Where it's running

  • Exercise Research Laboratory (LAPEX) - School of Physical Education, Physiotherapy, and Dance
    Porto Alegre, Rio Grande do Sul, Brazil
    Recruiting

Study contacts

  • Principal investigator: Marcelo H Glänzel, MSc — Federal University of Rio Grande do Sul
  • Study coordinator: Jeam M Geremia, PhD
  • Email: jeam.geremia@ufrgs.br
  • Phone: +5505133085852

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.