NCT06655181

Brief Summary

Chronic kidney disease is defined as kidney damage lasting three months or longer and irreversible loss of renal function (glomerular, tubular and endocrine) or a glomerular filtration rate of less than 60 ml/min /1.73 m2 . Among the five stages of chronic kidney disease, the last and most severe stage is end-stage chronic kidney disease, which requires kidney transplantation. Many organs and systems are affected after kidney transplantation. Anemia, cardiovascular complications, secondary hyperparathyroidism, accumulation of uremic toxins, electrolyte disturbances, uremic myopathy, vitamin D deficiency, malnutrition, inflammation, atherosclerosis syndrome, and respiratory dysfunction and respiratory muscle weakness caused by oxidative stress leading to loss of muscle tissue are the most common changes seen in the pulmonary system. Children undergoing transplantation are at higher risk for cardiovascular diseases, usually associated with hypertension and dyslipidemia, which are already present in the chronic kidney disease stage and persist after transplantation. Significantly reduced muscle strength and physical activity in pediatric kidney transplant recipients is also frequently reported in the literature. Decreased exercise capacity, muscle strength and physical activity increase the risk of pulmonary and cardiovascular diseases. As chronic kidney disease progresses, pulmonary complications such as restrictive pulmonary dysfunction, respiratory muscle myopathy and decreased respiratory muscle strength are associated with disease severity. To improve respiratory muscle strength, respiratory muscle training is recommended for people with chronic kidney disease. The literature has so far demonstrated positive effects of inspiratory muscle training on respiratory muscle strength, diaphragm thickness and mobility, lung volumes, functional capacity and quality of life in many other patient populations, including lung and heart disease, cardiac surgery, thoracic surgery, multiple sclerosis and stroke. Although recent studies have found evidence of systemic changes after transplantation in both adults and children, there is little evidence of the efficacy of respiratory muscle training, especially in pediatric patients. In the light of all this information, the aim of our study was to investigate the efficacy of respiratory muscle training in children undergoing kidney transplantation.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2024

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 27, 2024

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

October 22, 2024

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 23, 2024

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2024

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 5, 2025

Completed
Last Updated

September 8, 2025

Status Verified

September 1, 2025

Enrollment Period

7 months

First QC Date

October 22, 2024

Last Update Submit

September 5, 2025

Conditions

Keywords

Pediatric kidney transplantationrespiratory muscle training

Outcome Measures

Primary Outcomes (9)

  • Respiratory Function Test

    Change from baseline forced vital capacity (FVC) at 8 weeks.

    Eight weeks

  • Respiratory Function Test

    Change from baseline forced forced expiratory volume in 1 (FEV1) second at 8 weeks.

    Eight weeks

  • Respiratory Function Test

    Change from baseline peak expiratory flow (PEF) at 8 weeks.

    Eight weeks

  • Respiratory Function Test

    Change from baseline FEV1/FVC at 8 weeks.

    Eight weeks

  • Respiratory Muscle Strength

    Change from baseline maximum inspiratory pressure (MIP) at 8 weeks.

    Eight weeks

  • Respiratory Muscle Strength

    Change from baseline maximum expiratory pressure (MEP) at 8 weeks.

    Eight weeks

  • Peripheral Muscle Strength

    Change from baseline m. quadriceps strength at 8 weeks.

    Eight weeks

  • Peripheral Muscle Strength

    Change from baseline m. biceps strength at 8 weeks.

    Eight weeks

  • Functional Capacity

    Change from baseline distance covered in six minute walk test at 8 weeks.

    Eight weeks

Study Arms (2)

Experimental Group

EXPERIMENTAL

Participants in the experimental group will be taught a home-based chest physiotherapy program (breathing exercises, teaching relaxation positions, cough training, respiratory control, respiratory control, physical activity recommendation) to be applied for 30 minutes a day, 5 days a week for 8 weeks. In addition to this program, the participants in the experimental group will be given inspiratory and expiratory combined respiratory muscle training at 30% of MEP and MIP values for 8 weeks, 2 times a day for 20 minutes each, at least 5 days a week. The resistance setting of the participants in the experimental group will be adjusted to be calculated by measuring MIP-MEP again.

Device: Respiratory Muscle Training

Control Group

SHAM COMPARATOR

Participants in the control group will be taught a home-based chest physiotherapy program (breathing exercises, teaching relaxation positions, cough training, respiratory control, respiratory control, physical activity recommendation) to be applied for 30 minutes a day, 5 days a week for 8 weeks. Patients in the control group will receive sham combined respiratory muscle training at the lowest constant load, twice a day for 20 minutes each, at least 5 days a week for a total of 8 weeks.

Device: Respiratory Muscle Training

Interventions

Expiratory muscle training will be performed with POWERbreathe EX1 Medic (POWERbreathe®) device and inspiratory muscle training will be performed with POWERbreathe Medic Classic device.

Control GroupExperimental Group

Eligibility Criteria

Age8 Years - 18 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Being between 8-18 years old
  • At least 6 months have passed since kidney transplantation
  • Being able to walk, cooperate and clinically stable
  • Volunteering to participate in the study

You may not qualify if:

  • A history of hospitalization in the last four weeks before study participation History of hospitalization during the exercise training program
  • Having secondary diseases such as kyphoscoliosis that may affect respiratory function
  • Currently participating or have participated in regular exercise training in the last 1 year
  • Having neurological, psychiatric, orthopedic, cardiovascular and pulmonary system comorbid conditions that prevent the performance of tests and participation in the treatment program

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Istanbul Atlas University

Istanbul, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Renal Insufficiency, ChronicPrecursor Cell Lymphoblastic Leukemia-Lymphoma

Interventions

Breathing Exercises

Condition Hierarchy (Ancestors)

Renal InsufficiencyKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and SymptomsLeukemia, LymphoidLeukemiaNeoplasms by Histologic TypeNeoplasmsHematologic DiseasesHemic and Lymphatic DiseasesLymphoproliferative DisordersLymphatic DiseasesImmunoproliferative DisordersImmune System Diseases

Intervention Hierarchy (Ancestors)

Mind-Body TherapiesComplementary TherapiesTherapeuticsExercise Movement TechniquesPhysical Therapy Modalities

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

October 22, 2024

First Posted

October 23, 2024

Study Start

May 27, 2024

Primary Completion

December 31, 2024

Study Completion

September 5, 2025

Last Updated

September 8, 2025

Record last verified: 2025-09

Data Sharing

IPD Sharing
Will not share

Locations