- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04067479
Can Amino Acid Supplementation Augment the Anabolic Response in Tendon After Exercise
Study Overview
Detailed Description
Tendon pain is a common complaint in older adults. The mechanisms contributing to the large number of tendon problems in older adults are not known. It has been shown that tendon cross-sectional area (CSA) is reduced with aging concurrent with a significant loss of tendon collagen. Exercise is used to reverse the loss of muscle mass with aging but surprisingly exercise interventions designed to reduce tendon problems in older people are relatively unexplored. In young adults, exercise stimulates tendon collagen synthesis and enhances the production of growth factors, which stimulate tendon collagen production. It is presumed that exercise-induced increase in collagen synthesis contributes to the increase in tendon stiffness and CSA noted in young adults after chronic resistance exercise (RE). In contrast, our preliminary work indicates that RE is not effective at reducing the effects of aging on tendon. The investigators have demonstrated that 12-weeks of RE does not lead to increases in tendon CSA or stiffness, even when skeletal muscle mass and strength are greatly enhanced. To prevent tendon injury, greater tendon CSA and stiffness aid in withstanding the force generated by trained skeletal muscle. Greater CSA and stiffness also optimize force transfer through tendon to maximize musculoskeletal function. Our findings indicate that RE is not an optimal intervention for reversing age-related changes in tendon properties. Novel interventions are clearly needed that will enhance collagen synthesis leading to an increase in tendon stiffness and CSA while also improving skeletal muscle mass and strength in older individuals. This study will evaluate the effectiveness of various methods for stimulating tendon collagen synthesis during a bout of acute exercise. Specifically, the investigators propose two approaches to this problem.
- An acute bout of cycling exercise will enhance the release of growth factors leading to a larger increase in tendon collagen synthesis.
- A bolus of amino acids given orally will increase the release of key stimulators of tendon collagen synthesis leading to enhanced collagen synthesis after acute exercise.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Indiana
-
West Lafayette, Indiana, United States, 47907
- Purdue University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- 21-35 years or 60-80 years old
Exclusion Criteria:
- diabetes
- BMI>35
- acute illness, cardiac, pulmonary, liver, or kidney abnormalities, uncontrolled hypertension, metabolic disorders, arthritis, or a history of neuromuscular problems.
- chronic pain medication users
- alcoholism
- competitive athletes
- pregnant women will be excluded
- Individuals with specific allergies to amino acids
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Young
21-30 year old men and women Inclusion/Exclusion Criteria
|
Oral bolus of essential amino acids
|
Experimental: Older Adults
Inclusion/Exclusion Criteria
|
Oral bolus of essential amino acids
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Achilles peritendinous concentrations of pro-collagen
Time Frame: 0-6 hours post consumption
|
Peritendinous samples will be collected using microdialysis.
Pro-collagen will be assessed using enzyme immunoassay kits
|
0-6 hours post consumption
|
Amino Acid Levels
Time Frame: 0-6 hours post consumption
|
Achilles peritendinous amino acid concentrations will be assess using high performance liquid chromatography.
|
0-6 hours post consumption
|
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
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1704019133
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
product manufactured in and exported from the U.S.
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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