- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06205784
Prehabilitative Exercise Prior to Immobilization (PREHAB)
January 3, 2024 updated by: Casper Soendenbroe, Bispebjerg Hospital
Prehabilitative Exercise - Can the Physiological Consequences of Immobilization be Prevented?
This is a 10-week human study involving 24 younger (20-35 y) and 24 older (65-85 y) healthy individuals.
All participants will undergo unilateral immobilization of a knee for 7-10 days, followed by 4 weeks of heavy resistance exercise training (HReT).
Half of the participants (12 younger and 12 older) will also undergo 4 weeks HReT prior to the immobilization.
Prehabilitative exercise may confer protective effects on subsequent immobilization, and the various underlying mechanisms involved
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Estimated)
48
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Capital Region
-
Copenhagen, Capital Region, Denmark, 2400
- Recruiting
- Institute of Sports Medicine Copenhagen
-
Contact:
- Casper Soendenbroe
- Phone Number: +45 38635069
- Email: Casper.soendenbroe@regionh.dk
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- Age: Between 20-35 years old or between 65-85 years old.
- BMI: Between 18.5 and 35 kg/m2.
- Healthy and well, with normal dietary habits (not vegan).
Exclusion Criteria:
- More than one muscle biopsy previously taken from both vastus lateralis muscles.
- Smoking.
- Pregnancy.
- Past or present substance or alcohol abuse.
- Medical/surgical conditions that are assessed to affect protein synthesis or the participant's involvement in the trial.
- Knee pain that could affect the completion of the training intervention.
- High intake of supplements that increase the risk of bleeding during muscle biopsy (such as fish oil and ginger).
- Participation in regular strength training within the past year.
- Regular participation in structured sports.
- Current use of blood-thinning medication.
- Previous participation in trials involving oral intake of heavy water.
- Metal in the body preventing MRI scanning.
- For the older group, not having gone through menopause, and for the younger group, not having a regular menstrual cycle.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Prehab
|
3-4 weeks of heavy resistance exercise
|
No Intervention: NoTrain
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Quadriceps cross-sectional area
Time Frame: From pre (week 0) to post immobilization (week 5)
|
Quadriceps cross-sectional area measured by MRI
|
From pre (week 0) to post immobilization (week 5)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Muscle fiber size
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Muscle fiber size assessed by histochemical stainings
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Denervated muscle fibers
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Assessment denervated fibers using histochemical stainings
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Muscle protein synthesis
Time Frame: From pre immobilization (week 4) to post immobilization (week 5)
|
Muscle protein synthesis assessed using deuterium (heavy water)
|
From pre immobilization (week 4) to post immobilization (week 5)
|
Muscle gene expression
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Muscle gene expression assessed by RNA sequencing
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Brain structure
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Brain structure measured by MRI
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Brain function
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Brain function measured by MRI
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Tendon structure
Time Frame: From pre (week 0) to post immobilization (week 5)
|
Tendon structure measured by MRI
|
From pre (week 0) to post immobilization (week 5)
|
Tendon ultrastructure
Time Frame: From pre immobilization (week 4) to post immobilization (week 5)
|
Tendon tissue analysed by molecular analyses
|
From pre immobilization (week 4) to post immobilization (week 5)
|
Lean-body mass
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Whole-body and thigh lean-body mass assessed using DEXA-scans
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Muscle strength
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Muscle strength during knee extension assessed using isokinetic and isometric dynamometers
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Balance
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
One-legged balanced assessed using a force platform
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Force variability
Time Frame: From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Force variability during knee extension assessed using submaximal isometric contractions
|
From pre (week 0) to post immobilization (week 5) and post retraining (week 10)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Estimated)
January 6, 2024
Primary Completion (Estimated)
March 1, 2025
Study Completion (Estimated)
March 1, 2025
Study Registration Dates
First Submitted
December 19, 2023
First Submitted That Met QC Criteria
January 3, 2024
First Posted (Actual)
January 16, 2024
Study Record Updates
Last Update Posted (Actual)
January 16, 2024
Last Update Submitted That Met QC Criteria
January 3, 2024
Last Verified
January 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- BBH164
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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