- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05553769
Resistance Training, Detraining, and Retraining Study 2022 (TraDeRe2022)
Physiological Adaptations to Resistance Training, Detraining, and Retraining in Young Healthy Males and Females
Study Overview
Status
Intervention / Treatment
Detailed Description
It is well known that RT increases skeletal muscle size and strength. However, there seems to be a difference in increases in muscle size (termed hypertrophy) and strength in upper and lower limb musculature in untrained population after RT. Moreover, there is large inter-individual variation in the adaptations gained through RT. Also at the moment, the responses to de- and retraining are not well known, and new research designs for investigating possible muscle memory are needed. Muscle mass and strength, once achieved with RT, can be obtained faster with subsequent retraining if the initial adaptations were lost due to inactivity. RT causes many molecular and cellular changes in myofibers that aid in hypertrophic processes, yet their adaptations to DT and contribution to muscle memory are still marginally researched. It is, therefore, essential to widen our knowledge about the permanence of physiological adaptations in skeletal muscle to periods of DT and repeated exposure to RT.
The primary objectives to achieve by this project are:
- to determine the magnitude of 10-week RT period on upper and lower limb maximal dynamic strength and muscle size compared to the non-training control group
- to determine whether the responses to 20-week continuous RT differs in adaptations in maximal strength and muscle hypertrophy from two 10-week RT periods separated by a 10-week detraining period
- to identify molecular and cellular biomarkers explaining responses to RT, detraining and retraining
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Eeli J Halonen, MSc
- Phone Number: +358 0408479326
- Email: eeli.j.halonen@student.jyu.fi
Study Locations
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-
Keski-Suomi
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Jyväskylä, Keski-Suomi, Finland, 40014
- University of Jyväkylä
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- No regular resistance training history
- BMI within range 18.5-30 kg/m2
- Participants must be 18-40 years old
- No history in systematic endurance-type training (> 2 endurance exercise sessions lasting > 30 minutes per week for the last six months)
- non-smoker
- not currently consuming any anti-inflammatory drug(s)
Exclusion Criteria:
- history of medication that could affect exercise responses
- use of nutritional supplements aside from those that are protein- or carbohydrate-based (ex. creatine) or basic minerals, vitamins, or fish oil products
- any acute or chronic illness affecting cardiovascular, respiratory, musculoskeletal and/or endocrine function
- any other condition that may limit the ability to perform resistance training and testing (ex. uncontrolled hypertension, diabetes, arthritic conditions, neuromuscular complications)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 10 week training, 10 week detraining, 10 week retraining
Participants (healthy untrained men and women, age 18-40) will conduct 10-week RT intervention and a 10-week DT period and the exact same 10-week RT intervention again.
RT consists of two training sessions per week of total body workouts.
|
Participants (healthy untrained men and women, age 18-40) start with a 3-week familiarization and baseline measurement period.
After that, they are randomized to two intervention groups, where other group will conduct 10-week RT intervention and a 10-week DT period and again the exact same 10-week RT intervention again whereas the other group start with a 10-week non-training period and then continues with a 20-week RT intervention.
RT consists of two training sessions per week of total body workouts.
Same measurements are conducted for both groups with the same time intervals.
|
Experimental: 10 week non-training, 20 week continuous training
Participants (healthy untrained men and women, age 18-40) start with a 10-week non-training period and then continues with a 20-week RT intervention.
RT consists of two training sessions per week of total body workouts.
|
Participants (healthy untrained men and women, age 18-40) start with a 3-week familiarization and baseline measurement period.
After that, they are randomized to two intervention groups, where other group will conduct 10-week RT intervention and a 10-week DT period and again the exact same 10-week RT intervention again whereas the other group start with a 10-week non-training period and then continues with a 20-week RT intervention.
RT consists of two training sessions per week of total body workouts.
Same measurements are conducted for both groups with the same time intervals.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in upper and lower limb maximal strength after 10-week RT
Time Frame: week -2, week 0, week 10
|
Maximal muscle strength will be assessed via one repetition maximum (1RM) tests of both the leg press and barbell biceps curl exercises according to the NSCA's guidelines.
|
week -2, week 0, week 10
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in muscular performance after 20-week continuous RT period and two 10-week RT periods separated by a 10-week DT period
Time Frame: week -2, week 0, week 10, week 20, week 30
|
Change in 1 repetition maximum and 10 repetition maximum tests in dynamic leg press and biceps curl exercises, maximal force in isometric knee extension test, and flight time in countermovement jump.
|
week -2, week 0, week 10, week 20, week 30
|
Change in upper and lower limb muscle CSA after 10-week RT period
Time Frame: week -2, week 0, week 10
|
Vastus lateralis and biceps brachii muscle cross-sectional area (mm2) and thickness (mm) at the mid-limb will be assessed using a B-mode axial plane ultrasound (model SSD-α10, Aloka, Tokyo, Japan) with a 10 MHz linear-array probe (60 mm width) in extended-field-of-view mode (23 Hz sampling frequency).
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week -2, week 0, week 10
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Change in upper and lower limb muscle CSA after 20-week continuous RT period and two 10-week RT periods separated by a 10-week DT period
Time Frame: week 0, week 10, week 20, week 30
|
Vastus lateralis and biceps brachii muscle cross-sectional area (mm2) and thickness (mm) at the mid-limb will be assessed using a B-mode axial plane ultrasound (see above).
|
week 0, week 10, week 20, week 30
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Changes in muscle fiber size during the intervention period
Time Frame: week 0, week 10, week 20, week 30
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Vastus lateralis muscle biopsy
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week 0, week 10, week 20, week 30
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Change in lean mass during the intervention period
Time Frame: week -2, week 0, week 10, week 20, week 30
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BIA (InBody 770, Biospace Co. Seoul, Korea) method will be utilized to estimate changes in lean mass (kg).
|
week -2, week 0, week 10, week 20, week 30
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Change in fat mass during the intervention period
Time Frame: week 0, week 10, week 20, week 30
|
BIA (InBody 770, Biospace Co. Seoul, Korea) method will be utilized to estimate changes in fat mass (kg).
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week 0, week 10, week 20, week 30
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Change in body segment volumes during the intervention period
Time Frame: week 0, week 10, week 20, week 30
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3Dscanning (Fit3D, USA) will be used to estimate upper and lower limb body segment volumes (cm3).
|
week 0, week 10, week 20, week 30
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes in muscle fiber morphology and metabolism during the intervention period
Time Frame: week 0, week 10, week 20, week 30
|
Change in muscle fiber cross-sectional area, fiber type, mitochondrial count, and capillary density will be determined by immunohistochemistry. Anaerobic enzymes and sarcoplasmic protein contents in myofibers will be measured by Western blotting and by SDS-PAGE.
|
week 0, week 10, week 20, week 30
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Changes in metabolomics during the intervention period
Time Frame: week 0, week 10, week 20, week 30
|
A high-throughput serum Nuclear Magnetic Resonance (NMR) metabolomics platform will be used for the absolute quantification of serum lipids and metabolite profile.
The NMR metabolome assay yields at least 220 different metabolites including amino acids, apolipoproteins, cholesterol, fatty acids, glycolysis related metabolites, and inflammation markers.
Serum metabolomics will be quantified from acquired fasting blood samples by Nightingale (Finland) company, specializing in metabolomics quantification.
Further, statistical analysis of provided data will be handled at Finnish Institute for Health and Welfare (THL, Finland).
In addition, mass spectrometry based targeted/untargeted metabolomics analysis will be conducted from serum and/or muscle samples if funding for those analysis is available.
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week 0, week 10, week 20, week 30
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Changes in proteomics during the intervention period
Time Frame: week 0, week 10, week 20, week 30
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From muscle samples, we harness the advanced capabilities of DIA-PASEF (Data-Independent Acquisition Parallel Accumulation Serial Fragmentation) on the cutting-edge timsTOF Pro LC-MS platform to enable deep proteomics analysis.
The analysis happens in our collaborators Dr. Varjosalo´s laboratory in the University of Helsinki, Finland.
By integrating DIA-PASEF's unparalleled efficiency in ion fragmentation and parallel accumulation with the high-resolution mass spectrometry of timsTOF Pro, we anticipate a remarkable increase in the number and quality of protein identifications from muscle cells.
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week 0, week 10, week 20, week 30
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Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- TraDeRe2022
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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