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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03892460
Other study ID # 17-0413
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 1, 2017
Est. completion date October 24, 2019

Study information

Verified date July 2021
Source University of Vermont
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The goal of this research study is to understand whether an at-home exercise program started soon after CABG surgery, and continuing for 4 weeks following discharge from the hospital, can preserve or improve physical function.


Description:

Coronary artery bypass graft (CABG) surgery is a common surgical procedures and an important treatment option for coronary artery disease. The post-surgery period of rest and recovery is associated with cardiorespiratory and skeletal muscle deconditioning. The goal of this research study is to understand whether an at-home exercise program started soon after CABG surgery, and continuing for 4 weeks following discharge from the hospital, can serve as a bridge between surgery and the start of cardiac rehabilitation to preserve or improve physical function. Volunteers will be randomly assigned to receive neuromuscular electrical stimulation (NMES) of their quadriceps muscles or not to receive NMES (control group). Volunteers will be evaluated prior to CABG, upon discharge and 4 weeks Post-CABG surgery. Assessments will include measurements of physical function by the Short Physical Performance Battery, 6 min walk tests and body composition analysis, as well as assessment of subjective physical functional capacity and quality of life using the Medical Outcomes Short form 36. Additionally, accelerometry will be used to monitor weight-bearing physical activity during the 4 week treatment phase.


Recruitment information / eligibility

Status Completed
Enrollment 54
Est. completion date October 24, 2019
Est. primary completion date October 24, 2019
Accepts healthy volunteers No
Gender All
Age group 50 Years to 80 Years
Eligibility Inclusion Criteria: - 50-80 yrs of age - ambulatory - scheduled for coronary artery bypass graft surgery - able to provide informed consent Exclusion Criteria: - rheumatoid arthritis or other inflammatory/autoimmune disease - cancer, excluding non-melanoma skin cancer - exercise limiting peripheral vascular disease - neuromuscular disease or neuromuscular dysfunction associated with cerebrovascular event - body mass index >38 kg/m2 - valvular heart disease not corrected surgically - lower extremity blood clot or implantable cardioverter-defibrillator

Study Design


Related Conditions & MeSH terms


Intervention

Device:
neuromuscular electrical stimulation
bilateral quadriceps exercise with neuromuscular electrical stimulation

Locations

Country Name City State
United States University of Vermont College of Medicine Burlington Vermont

Sponsors (1)

Lead Sponsor Collaborator
University of Vermont

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Short Physical Performance Battery Short Physical Performance Battery is composed of three tasks assessing balance, gait speed, and ability to stand from a chair. Units on a scale for each domain range from of 0-4 for a total score of 0 to 12, with a higher score indicating better physical function. 4 weeks
Secondary 6 Minute Walk Distance 6 MW was developed to assess cardiopulmonary fitness in patients with lung and cardiac disease, and has been validated in cardiac surgery patients. It assesses the distance that a patient can walk in 6 minutes time around a standard course. 4 weeks
Secondary Medical Outcomes Short Form 36 - Physical Function The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focused on limitations in physical function due to health problems. Lower scores represent more physical function disability, while higher scores represent less disability. Hospital discharge and 4-weeks post-discharge
Secondary Medical Outcome Short Form 36 - Role Physical The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focused on limitations in usual role activities because of physical health problems. Lower scores represent more disability, while higher scores represent less disability. Hospital discharge and 4-weeks post-discharge
Secondary Medical Outcomes Short Form 36 - Bodily Pain The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focused on bodily pain. Lower scores represent more pain, while higher scores represent less pain. Hospital discharge and 4-week post-discharge
Secondary Medical Outcomes Short Form 36 - General Health The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focused on self-reported general health. Lower scores represent worse health, while higher scores represent better health. Hospital discharge and 4-week post-discharge
Secondary Medical Outcomes Short Form 36 - Vitality The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focused on vitality (energy and fatigue). Lower scores represent less vitality, while higher scores represent more vitality. Hospital discharge and 4-weeks post-discharge
Secondary Medical Outcomes Short Form 36 - Social Function The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focuses on limitations in social activities because of physical or emotional problems. Lower scores represent more more limitations, while higher scores represent less lmitations. Hospital discharge and 4-weeks post-discharge
Secondary Medical Outcomes Short Form 36 - Role Emotional The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This sub-domain focuses on limitations in usual role activities because of emotional problems. Lower scores represent more limitations, while higher scores represent less limitations. Hospital discharge and 4-week discharge
Secondary Medical Outcomes Short Form 36 The Medical Outcomes Short Form 36 is a questionnaire that assesses self-reported health and physical functional status. There are 36 questions that reflect eight sub-domains of health included in this questionnaire. Scores for each domain represent weighted sums of the questions in each sub-domain. Each scale is directly transformed into a 0-100 scale on the assumption that each question carries equal weight. This measure represents the total computed score across all sub-domains. Lower scores represent worse overall health, while higher scores represent better health. Hospital discharge and 4-week post-discharge
Secondary Physical Activity Physical activity was measured throughout the intervention in control and treatment groups and data. Data were analyzed by regression analysis to obtain the best fit line for the data and to compute a slope of the change in step count with day post-discharge to examine whether groups differed in their rate of recovery of weight-bearing activity (ie, walking). Daily from discharge to 4-week post-discharge evaluation
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