About this trial
This clinical trial studies whether breathing exercises for the muscles that help with breathing air in, inspiratory muscle training (IMT), works to improve breathing muscle strength, shortness of breath, and physical activity levels in women who are receiving chemotherapy for early-stage breast cancer (BC). Cancer and/or treatments for BC can directly result in muscle wasting that involves breathing muscles, skeletal muscles or heart muscles. Pain, weakness, shortness of breath, and side effects of cancer treatment may lead to lower physical activity levels. IMT involves breathing exercises using a small hand-held device. The device makes it a little harder to breathe in, which may help strengthen breathing muscles. IMT may be an effective way to improve breathing muscle strength, shortness of breath, and physical activity levels in women who are receiving chemotherapy for early-stage BC.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥ 18 years
Within 3 weeks of starting chemotherapy for an early-stage breast cancer diagnosis
Able to exercise independently without needing support
Ability to read, speak, understand English
Disqualifiers
Metastatic breast cancer
Unwilling or unable to follow protocol requirements
Any significant health condition which in the investigator's opinion increases the risks of participation or makes the participant unsuitable for the study
Trial design
Parallel
Treatments tested in this trial
Inspiratory muscle training
BehavioralTraining of respiratory muscles
Treatment groups
Trial outcomes
Primary outcomes
Maximum inspiratory pressure
Measure of the strength of the inspiratory muscles. Units: cm H20
Secondary outcomes
Physical activity levels
Number of steps/day averaged weekly.
Modified Medical Research Council Dyspnea scale rating
Patients will indicate the extent to which their dyspnea affects mobility using a one question 1-5 scale; higher scores indicate greater respiratory disability.
Dyspnea 12 score
Questionnaire consists of 12 descriptor items such as "I feel short of breath" and "my breathing is uncomfortable" with each item rated on a scale of none (0), mild (1), moderate (2), or severe (3). Individual items are summed to generate a total score (0 to 36), with a higher score indicating worse dyspnea
RAND-36 Quality of life
8 subdomains will be scored 0-100 with higher scores reflecting better perceived quality of life.
Other outcomes
Relative dose intensity of chemotherapy
Will record the relative dose intensity of chemotherapy for each participant. The relative dose intensity will be averaged for analysis.
Sponsors and contacts
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