- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04208074
Exercise Study for Breast Cancer Survivors
Enhancing Muscle Strength and Immunity in Breast Cancer
This study evaluates the link between muscle health and immune health in breast cancer survivors. Regular exercise is known to improve overall survival in cancer patients but the mechanism is not known. In this study the investigators will evaluate if improving muscle mass and strength via exercise improves the immune system's ability to fight cancer.
This is a one armed study where in 30 breast cancer survivors will be recruited to a 4 month exercise intervention. Increase in muscle mass and strength will be correlated with immune cell frequency and function.
Study Overview
Detailed Description
Breast cancer survivors with stronger and larger muscles have better overall survival and lower recurrence than women with weaker and smaller muscles. However, the mechanism for this association is currently unknown. A recent study from the investigators has shown that there is an association between the frequency of immune cell types that kill cancer and higher muscle mass and strength, with higher muscle mass and strength correlating with a higher frequency of cancer killing, effector memory, T cells. The investigators thus propose that increasing muscle mass and strength can improve overall survival and reduce recurrence by increasing the number of cancer killing immune T cells.
To test this hypothesis, the investigators will recruit 30 breast cancer survivors to an exercise program designed to increase their muscle mass and strength. The program will be optimized to each participant's level of fitness and strength and will be designed by experts in the field. Personal trainers will teach the participants how to exercise and use muscle resistance training equipment using the correct technique and will monitor progress to avoid injuries and to maximize training benefits.
The investigators will collect blood (to study immune cell subsets) and measure muscle strength and body composition (to measure muscle mass) for participants before and after the study.
The duration of the exercise training protocol is 4 months and participants will be asked to exercise 4 days a week; 2 days at the gym and 2 days at home.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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California
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San Diego, California, United States, 92121
- Aditi Narsale
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Women
- Post menopausal
- Stage I - III breast cancer
- Breast cancer the only cancer
- Can exercise for 16 weeks; 2 days a week at the gym and 2 days of the week at home
- Live in the San Diego area
Exclusion Criteria:
- Exercise regularly in the gym.
- Are on chemotherapy or radiation therapy or have been in the past month
- Will be on chemotherapy or radiation therapy in the next 6 months
- Have a condition that will prevent them from exercising in the gym
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: Exercise
Four months of muscle resistance training (exercise) designed to increase muscle mass and strength.
The exercise protocol includes four different lifts with weights including, squats, bench press, dead lift and overhead press.
The weights for each lift will be optimized for each participant and increased as the participant adapts to the exercise routine.
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Participants will exercise under the supervision of expert personal trainers and follow an optimized exercise program tailored to the strength and fitness level of each participant.
Participants will exercise for 16 weeks; 2 days a week at the gym for an hour and 2 days of the week at home for 45 minutes.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in frequency of effector memory immune cells
Time Frame: 16 weeks of muscle resistance training
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Effector memory cells are immune cells that can kill cancer.
We will measure the frequency of these cells before and after the 16 week training program to see if they increase.
Flow Cytometry techniques will be used to determine the frequency of these cells.
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16 weeks of muscle resistance training
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Change in frequency of central memory immune cells
Time Frame: 16 weeks of muscle resistance training
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Central memory cells are immune cells that are linked to poor prognosis in patients with cancer.
We will measure the frequency of these cells before and after the 16 week training program to see if they decrease.
Flow Cytometry techniques will be used to determine the frequency of these cells.
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16 weeks of muscle resistance training
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Change in frequency of regulatory immune cells
Time Frame: 16 weeks of muscle resistance training
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Regulatory immune cells, also called Tregs, are a type of immune cell that keeps the immune system from becoming over active.
However, people with too many Treg cells might be more susceptible to cancer growth.
We will measure the frequency of Tregs by Flow Cytometry before and after the 16 week training program to see if exercise reduces their frequency.
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16 weeks of muscle resistance training
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Change muscle mass
Time Frame: 16 weeks of muscle resistance training
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Dual energy x-ray absorptiometry (DEXA) scans will be used to measure the appendicular muscle mass (amount of muscle in the arms and legs) before and after the 16 week training program.
The appendicular muscle mass index is calculated using the appendicular muscle mass divided by height square and is measured in kg/m^2.
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16 weeks of muscle resistance training
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Change in hand grip strength
Time Frame: 16 weeks of muscle resistance training
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The level of hand grip strength is a good indicator of body strength.
Hand grip strength will be measured in kilograms using an instrument called a dynamometer before and after the 16 week training program.
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16 weeks of muscle resistance training
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Change in capacity to climb stairs
Time Frame: 16 weeks of muscle resistance training
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The stair climb test measures the amount of power used by a participant to climb a set of stairs.
Power is measured in Watts (W) and is calculated using the time taken to climb the stairs (seconds), the vertical height of the stairs (meters) and the weight (kilograms) of the participant and is a standard measure of performance.
The stair climb test will be performed before and after the 16 week training program.
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16 weeks of muscle resistance training
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Change in upper body strength
Time Frame: 16 weeks of muscle resistance training
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The Chest Press Test will be used to measure upper body strength.
It will be performed before and after the 16 week training program using specialized exercise equipment in the gym.
This test will measure the maximum weight that be lifted by the arms and will be measured in kilograms.
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16 weeks of muscle resistance training
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Change in lower body strength
Time Frame: 16 weeks of muscle resistance training
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The Knee Extension Test will be used as a measure of lower body strength.
It will be performed before and after the 16 week training program using specialized exercise equipment in the gym.
This test will measure the maximum weight that be lifted by the legs and will be measured in kilograms.
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16 weeks of muscle resistance training
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Change in levels of inflammatory factors in the blood
Time Frame: 16 weeks of muscle resistance training
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The investigators will measure the levels of inflammatory and anti-inflammatory factors, called cytokines, in blood collected before and after the 16 week training program.
Cytokines will be measured in picograms per milliliter.
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16 weeks of muscle resistance training
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Change in levels of factors called microRNAs in the blood
Time Frame: 16 weeks of muscle resistance training
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The investigators will measure levels of microRNAs in the blood before and after the 16 week training protocol.
The microRNAs will be detected and levels measured using a technique called qPCR.
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16 weeks of muscle resistance training
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Body Mass Index
Time Frame: 1 day before, and 1 day after the 16 week muscle resistance training program
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BMI will be calculated using height and weight measurements and reported as kg/m2
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1 day before, and 1 day after the 16 week muscle resistance training program
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Physical activity
Time Frame: 1 day before, and 1 day after the 16 week muscle resistance training program
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Physical activity will be determined using the Framingham Physical activity questionnaire.
Overall physical activity will be calculated using the physical index score, with a higher score indicating higher physical activity.
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1 day before, and 1 day after the 16 week muscle resistance training program
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Joanna D Davies, PhD, San Diego Biomedical Research Institute
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
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
- 25IB-0023
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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