Exercise Capacity and Fatigue in Heart Failure Patients With and Without Inspiratory Muscle Weakness

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

102 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-01-01

Study Completion Date

2024-02-01

Brief Summary

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In patients with heart failure, diaphragm dysfunction contributes to decreased quality of life while simultaneously increasing morbidity and mortality. Inspiratory muscle weakness is observed in 30-50% of patients, with the severity of weakness increasing as the disease progresses. Patients exhibit reduced exercise capacity, peripheral and respiratory muscle strength, decreased respiratory function, increased dyspnea, fatigue, and worsened quality of life. However, it is unclear how these parameters will change in patients with inspiratory muscle weakness. Therefore, the study aimed to compare functional exercise capacity, pulmonary function, peripheral muscle strength, dyspnea, fatigue, quality of life and physical activity level in heart failure patients with and without inspiratory muscle weakness and healthy controls

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Detailed Description

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It is believed that respiratory muscle abnormalities develop earlier and more extensively than extremity muscle abnormalities in heart failure. Diaphragm dysfunction contributes to decreased quality of life while simultaneously increasing morbidity and mortality. Inspiratory muscle weakness is observed in 30-50% of patients, with the severity of weakness increasing as the disease progresses. Heart failure patients exhibit increased airway resistance and ventilatory response during exercise. Fatigue and dyspnea are common symptoms associated with exercise intolerance and decreased quality of life in heart failure patients.There is no study in the literature comparing functional exercise capacity, pulmonary function, peripheral muscle strength, dyspnea, fatigue, quality of life and physical activity level in heart failure patients with and without inspiratory muscle weakness (IMW). The aim of the study was to compare functional exercise capacity, pulmonary function, peripheral muscle strength, dyspnea, fatigue, quality of life and physical activity level in heart failure patients with and without IMW and healthy controls.

The study was planned as a cross-sectional, retrospective. Heart failure patient were divided into IMW group or not IMW group due to their MIP values. Also healthy controls who were matched for age-gender were included.

Conditions

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Heart Failure

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

RETROSPECTIVE

Study Groups

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Heart failure patients with inspiratory muscle weakness

Exercise capacity (6 minute walking test), pulmonary function (spirometry), respiratory muscle strength (mouth pressure device), peripheral muscle strength (hand-held dynometer), dyspnea (The Modified Medical Research Council (MMRC) dyspnea scale), fatigue (Fatigue Severity Scale), quality of life (The Short Form 36 (SF-36) questionnaire), physical activity level (The International Physical Activity Questionnaire) were evaluated.

No interventions assigned to this group

Heart failure patients without inspiratory muscle weakness

Exercise capacity (6 minute walking test), pulmonary function (spirometry), respiratory muscle strength (mouth pressure device), peripheral muscle strength (hand-held dynometer), dyspnea (The Modified Medical Research Council (MMRC) dyspnea scale), fatigue (Fatigue Severity Scale), quality of life (The Short Form 36 (SF-36) questionnaire), physical activity level (The International Physical Activity Questionnaire) were evaluated.

No interventions assigned to this group

Healthy controls

Exercise capacity (6 minute walking test), pulmonary function (spirometry), respiratory muscle strength (mouth pressure device), peripheral muscle strength (hand-held dynometer), dyspnea (The Modified Medical Research Council (MMRC) dyspnea scale), fatigue (Fatigue Severity Scale), quality of life (The Short Form 36 (SF-36) questionnaire), physical activity level (The International Physical Activity Questionnaire) were evaluated.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* HF patients were being aged over18 years
* clinically stable at least four weeks
* having no change in medications over three months

Exclusion Criteria

* having unstable angina, acute myocardial infarction, uncontrolled hypertension, significant valvular disease, history of malignancy or orthopedic, rheumatologic, neurological, or pulmonary diseases

Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes