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Effects of Inspiratory Muscle Training on Type 2 Diabetes Mellitus Patients With Inspiratory Muscle Weakness

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ClinicalTrials.gov Identifier: NCT00815178
Recruitment Status : Completed
First Posted : December 29, 2008
Last Update Posted : December 29, 2008
Information provided by:

Study Description
Brief Summary:
The purpose of the study is to determine if inspiratory muscle training improves inspiratory muscle strength of type 2 diabetes mellitus patients with inspiratory muscle weakness.

Condition or disease Intervention/treatment
Diabetes Complications Inspiratory Muscle Weakness Behavioral: Inspiratory muscle training Behavioral: Inpiratory muscle training placebo

Detailed Description:
In congestive heart failure patients, inspiratory muscle weakness can be reversed by developing diaphragmatic hypertrophy through inspiratory muscle training, improving functional capacity and quality of life. In type 2 diabetes mellitus patients the frequency of inspiratory muscle weakness is unknown, as well as the response to inspiratory muscle training. For this reason, the present study evaluated the inspiratory muscle strength in type 2 diabetes mellitus patients and the effect of inspiratory muscle training on inspiratory muscle strength, pulmonary function, functional capacity and autonomic modulation assessed through heart rate variability.

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 25 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Effects of Inspiratory Muscle Training on Type 2 Diabetes Mellitus Patients With Inspiratory Muscle Weakness: A Randomized, Controlled Clinical Trial
Study Start Date : September 2006
Primary Completion Date : September 2008
Study Completion Date : September 2008

Resource links provided by the National Library of Medicine

U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
Experimental: Inspiratory muscle training Behavioral: Inspiratory muscle training
For Inspiratory muscle training (IMT)patients carried out the IMT on a daily basis for eight weeks, with duration of 30 minutes and intensity corresponding to 30% of resting PImax, with a linear pressure resistance device (Threshold®). Weekly maximum inspiratory pressure (PImax) evaluations and workload adjustments were performed. Inspiratory load was adjusted on a weekly basis to maintain 30% of the subject's PImax. Training sessions were carried out at home for both groups and supervised once a week at the hospital.
Placebo Comparator: Placebo Behavioral: Inpiratory muscle training placebo
Inspiratory muscle training was carried out on the same basis as in the intervention group but with no inspiratory load.

Outcome Measures

Primary Outcome Measures :
  1. Maximum inspiratory pressure [ Time Frame: 8 weeks ]

Secondary Outcome Measures :
  1. Peak exercise oxigen consumption [ Time Frame: 8 weeks ]
  2. pulmonary function [ Time Frame: 8 weeks ]
  3. autonomic modulation assessed by heart rate variability [ Time Frame: 8 weeks ]

Eligibility Criteria

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Ages Eligible for Study:   40 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • diabetes melittus
  • sedentary
  • inspiratory muscle weakness with PImax < 70% of the predicted

Exclusion Criteria:

  • mass index > 33 kg/m2
  • exercise-induced asthma history
  • infectious disease
  • osteoarticular disease
  • regular alcohol or tobacco consumption in the past 6 months
  • cardiac disease
  • pulmonary disease
Contacts and Locations

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To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00815178

Hospital de Clínicas de Porto Alegre
Porto Alegre, Rio Grande do Sul, Brazil, 90035-903
Sponsors and Collaborators
Hospital de Clinicas de Porto Alegre
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Hospital de Clínicas de Porto Alegre
ClinicalTrials.gov Identifier: NCT00815178     History of Changes
Other Study ID Numbers: Inspiratory training diabetes
First Posted: December 29, 2008    Key Record Dates
Last Update Posted: December 29, 2008
Last Verified: December 2008

Keywords provided by Hospital de Clinicas de Porto Alegre:
inspiratory muscle weakness
autonomic modulation
diabetes mellitus
heart rate variability
functional capacity

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Respiratory Aspiration
Muscle Weakness
Diabetes Complications
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Respiration Disorders
Respiratory Tract Diseases
Pathologic Processes
Muscular Diseases
Musculoskeletal Diseases
Neuromuscular Manifestations
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms