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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT03082404
Other study ID # HIIMT_CKD
Secondary ID
Status Not yet recruiting
Phase N/A
First received March 12, 2017
Last updated March 12, 2017
Start date April 3, 2017
Est. completion date June 2, 2017

Study information

Verified date March 2017
Source Federal University of Health Science of Porto Alegre
Contact Rodrigo DM Plentz, PhD
Phone (+55) 5185955153
Email roplentz@yahoo.con.br
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Chronic kidney disease is a renal injury and progressive and irreversible loss of kidney function and in its most advanced stage is called chronic renal failure. Although hemodialysis replace some kidney function, patients suffer some alterations characterized by "uremic syndrome" typically expressed by: motor neuropathy and/ or autonomic neuropathy, cardiac or musculoskeletal myopathies, peripheral vascular changes, among others. Thereby, the the adoption of physical exercise should be encouraged. However, it is known that the ability to exercise the subject in hemodialysis is low and they present weakness of the peripheral muscular system, including inspiratory muscles. The aim of this study is to assess the effects of inspiratory muscle training (IMT) on ventilatory muscle strength and functional capacity of patients with chronic kidney disease in hemodialysis. For this the following assessments will be performed before and after intervention: six-minute walk test to functional capacity; Kidney Disease and Quality of Life - Short Form questionnaire for quality of life; flow-mediated dilatation to endothelial function; sit-to-stand test for proximal strength of lower limbs. The subjects will be randomized into two groups, IMTG (inspiratory muscle training group) and CG (control group). The first will receive the IMT, for five weeks, three times a week, during hemodialysis session and the patients will be oriented to realize more three days at home. The control group only will be evaluated and re-evaluated. Expected results at the end of the protocol with IMT are: increased inspiratory muscle strength; longest distance covered on the six-minute walk test; improved quality of life; increased muscle strength of the lower limbs; improved endothelial function.


Description:

The research will be developed in the hemodialysis unit of the Santa Clara hospital of Santa Casa de Misericórdia de Porto Alegre. After the selection of patients for eligibility criteria they will be randomized into IMTG or control group. First all patients will be evaluated, and subsequently the patients in the IMTG will be trained six times per week (three times at hemodialysis unit and three times at home) for five weeks using a linear pressure load device (POWERbreathe Plus Light Resistance@, England). The sessions will take place in the first hour of dialysis and the training protocol will consist of five series with 10 repetitions, each serie with a two-minute interval or according to the patient´s feedback, using the Borg modified scale. The overload will be adjusted weekly, beginning with 50% of maximum inspiratory pressure and increasing until 70% along the protocol period. At the end of follow-up, both groups will be evaluated in order to compare.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 25
Est. completion date June 2, 2017
Est. primary completion date May 2, 2017
Accepts healthy volunteers No
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria:

- Patients with chronic kidney disease on hemodialysis for more than 3 months;

- Clearance of urea during hemodialysis (Kt/V = 1.2).

Exclusion Criteria:

- Cognitive impairment that prevents conducting evaluations, as well as inability to understand and sign the informed consent form;

- Patients with recent sequel of stroke;

- Disabling musculoskeletal disease;

- Uncontrolled hypertension (Systolic blood pressure > 230 mmHg and diastolic blood pressure > 120 mmHg);

- Grade IV heart failure (NYHA) or decompensated;

- Uncontrolled diabetes (blood glucose > 300 mg/dL);

- Unstable angina;

- Fever and/or infectious disease;

- Recent acute myocardial infarction (two months);

- Active smokers.

Study Design


Intervention

Other:
Inspiratory muscle training
Inspiratory muscle training will be performed during the first hour of hemodialysis treatment and the protocol will consist of five series with 10 repetitions, each series with a two-minute interval of according to patient tolerance. The overload will be adjusted weekly, beginning with 50% of the maximum inspiratory pressure, during the first week, 60% of maximum inspiratory pressure in the second and third week and 70% of maximum inspiratory pressure in the fourth and fifth weeks. Maximum inspiratory pressure will be evaluated before the protocol period and adjusted weekly by manovacuometry.

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Federal University of Health Science of Porto Alegre Irmandade Santa Casa de Misericórdia de Porto Alegre

Outcome

Type Measure Description Time frame Safety issue
Primary Functional capacity Functional capacity will be assessed by the distance walked in six-minute walk test (6MWT) Five weeks
Secondary Muscle strength of inspiratory muscle Muscle strength will be assessed by manovacuometry Five weeks
Secondary Proximal strength of lower limbs Proximal strength of lower limbs will be assessed by the number of repetitions performed in sit-and-stand test (SST). Five weeks
Secondary Endothelial function Endothelial function will be assessed by flow mediated dilation technique Five weeks
Secondary Quality of Life The quality of life will be assessed by questionnaire Kidney Disease and Quality-of-Life Short-Form (KDQOL-SFTM) Five weeks
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