NCT06951633

Brief Summary

The aim of the study is to assess the impact of the rehabilitation and treatment stay at the underground Health Resort of the 'Wieliczka' Salt Mine in Wieliczka on the functional capacity, respiratory parameters, and rheological properties of blood in elderly individuals with respiratory diseases.

Trial Health

57
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
33

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Apr 2025

Geographic Reach
1 country

1 active site

Status
recruiting

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 4, 2025

Completed
3 days until next milestone

First Submitted

Initial submission to the registry

April 7, 2025

Completed
23 days until next milestone

First Posted

Study publicly available on registry

April 30, 2025

Completed
10 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 28, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2026

Completed
Last Updated

April 30, 2025

Status Verified

April 1, 2025

Enrollment Period

11 months

First QC Date

April 7, 2025

Last Update Submit

April 22, 2025

Conditions

Keywords

Pulmonary function, speleotherapy, blood tests, 6MWT, chest

Outcome Measures

Primary Outcomes (26)

  • Respiratory muscle force: Maximal inspiratory pressure - MIP

    This test involves wearing a nose peg and inhaling through a tube, performed in three trials.

    up to 18 months

  • Respiratory muscle force: Maximal expiratory pressure - MEP

    This test involves wearing a nose peg and exhaling through a tube, performed in three trials.

    up to 18 months

  • Respiratory muscle force: Sniff Nasal Inspiratory Pressure - SNIP

    The test consists of separate inhalations through the left and right nostrils, performed in five trials per nostril.

    up to 18 months

  • 6-Minute Walk Test - 6MWT

    The 6-Minute Walk Test (6MWT) is a standardized test used to assess functional exercise capacity. It measures the distance an individual can walk on a flat, hard surface in a period of six minutes

    up to 18 months

  • The Aggregation Index (AI)

    The Aggregation Index (AI), indicating the extent of red blood cell aggregation, is measured using the Lorrca Maxis (Laser-Assisted Optical Rotational Cell Analyzer) under standardized shear conditions. (AI) analyzed

    up to 18 months

  • The half-time of total aggregation (T1/2)

    The half-time of total aggregation (T1/2), which reflects the time required for red blood cells to aggregate to 50% of their maximum value, is assessed using the Lorrca Maxis (Laser-Assisted Optical Rotational Cell Analyzer). This test measures the aggregation kinetics of erythrocytes under controlled shear stress, providing a quantitative assessment of the aggregation process.

    up to 18 months

  • The Elongation Index (EI)

    The Elongation Index (EI), reflecting red blood cell deformability, is measured using the Lorrca Maxis (Laser-Assisted Optical Rotational Cell Analyzer), which evaluates the ability of erythrocytes to deform under varying shear stress.

    up to 18 months

  • 4- Meters Gait Speed Test - 4MGST

    The 4-Meters Gait Speed Test (4MGST) is a simple, widely used assessment tool to measure an individual's walking speed over a short, fixed distance. It is primarily used to evaluate mobility and functional performance, especially in elderly individuals.

    up to 18 months

  • Health Related Quality of Life - HRQoL withe the use of 15D questionnaire.

    The 15D is a comprehensive, generic health-related quality of life (HRQoL) tool that measures an individual's overall health status. It includes 15 dimensions, covering aspects of physical, mental, and social well-being.Minimum Value: 0 (representing the worst possible health state) Maximum Value: 1 (representing the best possible health state). Higher Scores indicate better health-related quality of life, reflecting higher levels of functioning and well-being across the 15 dimensions.

    up to 18 months

  • Chest mobility

    The assessment of chest mobility involves evaluating the range of motion (ROM) and the expansion of the chest during inspiration and expiration, performed in three trials.

    up to 18 months

  • Back scratch test

    The patient is instructed to reach with his dominant hand behind his head, over the shoulder, as if trying to scratch the back of their neck. The fingers should be pointing downward toward the spine.The distance between the fingers (or whether they touch) is measured to assess the flexibility and range of motion of the shoulder and upper back.

    up to 18 months

  • Interleukin IL 1b

    Interleukin-1 beta (IL-1β) is a pro-inflammatory cytokine produced primarily by activated macrophages and monocytes. It plays a central role in the regulation of immune and inflammatory responses and is considered a key mediator in the pathophysiology of various chronic inflammatory, autoimmune, and infectious diseases.

    up to 18 months

  • Interleukin IL-6

    Interleukin-6 (IL-6) is a pleiotropic pro-inflammatory cytokine produced by various cell types, including macrophages, T cells, B cells, endothelial cells, fibroblasts, and skeletal muscle cells. It plays a key role in the regulation of immune responses, inflammation, hematopoiesis, and metabolism.

    up to 18 months

  • TNF-alfa

    Tumor Necrosis Factor alpha (TNF-α) is a key pro-inflammatory cytokine involved in the regulation of immune responses, inflammation, and apoptosis. It is produced primarily by activated macrophages, but also by T lymphocytes, natural killer (NK) cells, and other immune and non-immune cells in response to infection, injury, or immune stimulation.

    up to 18 months

  • WBC [10⁹/l]

    White Blood Cell Count - WBC \[10⁹/l\] Represents the number of leukocytes in one liter of blood. WBCs play a crucial role in immune defense. Elevated levels may indicate infection, inflammation, physiological stress, or hematologic malignancies. Decreased levels can be associated with bone marrow suppression or immunodeficiency.

    up to 18 months

  • RBC [10¹²/l],

    Red Blood Cell Count - RBC \[10¹²/l\] Indicates the number of erythrocytes per liter of blood. RBCs are responsible for oxygen transport. Decreased levels suggest anemia; elevated levels may indicate dehydration or polycythemia.

    up to 18 months

  • HGB [g/dl]

    Hemoglobin Concentration - HGB \[g/dl\] Measures the amount of hemoglobin in the blood. Hemoglobin is the oxygen-carrying protein in red blood cells. It is a key indicator of oxygen-carrying capacity and a primary marker for diagnosing anemia.

    up to 18 months

  • HCT [%]

    Hematocrit - HCT \[%\] Refers to the percentage of total blood volume occupied by red blood cells. Lower values are commonly seen in anemia; higher values may indicate dehydration or polycythemia.

    up to 18 months

  • MCV [fl]

    Mean Corpuscular Volume - MCV \[fl\] Reflects the average volume of individual erythrocytes. It helps to classify anemia as microcytic, normocytic, or macrocytic.

    up to 18 months

  • MCH [pg]

    Mean Corpuscular Hemoglobin -MCH \[pg\] Indicates the average amount of hemoglobin per red blood cell. It provides additional insight into the hemoglobin content in different types of anemia.

    up to 18 months

  • MCHC [g/dl]

    Mean Corpuscular Hemoglobin Concentration - MCHC \[g/dl\] Represents the average concentration of hemoglobin in erythrocytes. Decreased levels suggest hypochromia, commonly observed in iron deficiency anemia.

    up to 18 months

  • PLT [109/l]

    Platelet Count - PLT \[10⁹/l\] Determines the number of platelets in one liter of blood. Platelets are essential for blood clotting. Thrombocytopenia increases bleeding risk, while elevated platelet counts may indicate inflammation or a prothrombotic state.

    up to 18 months

  • Reticulocytes {% or ‰]

    Reticulocytes \[% or ‰\] Immature red blood cells that reflect bone marrow erythropoietic activity. Increased reticulocyte counts indicate active regeneration, commonly seen in response to anemia or blood loss.

    up to 18 months

  • CRP [mg/l]

    C-Reactive Protein - CRP \[mg/l\] An acute-phase protein produced by the liver in response to inflammation. Elevated CRP levels are a sensitive but non-specific marker of acute inflammation, infection, or tissue injury.

    up to 18 months

  • Fibrinogen [g/l]

    Fibrinogen A coagulation factor and acute-phase reactant synthesized in the liver. Increased fibrinogen levels are observed during inflammation, infection, or trauma and may contribute to a hypercoagulable state.

    up to 18 months

  • ESR [mm/h]

    Erythrocyte Sedimentation Rate - ESR \[mm/h\] A non-specific indicator of inflammation that measures the rate at which red blood cells settle in a vertical tube over one hour. Elevated ESR values are commonly found in infections, autoimmune diseases, and malignancies.

    up to 18 months

Secondary Outcomes (6)

  • FEV₁

    2 weeks

  • FVC

    2 weeks

  • PEF

    2 weeks

  • Bronchodilator Reversibility (BDR) Test

    2 weeks

  • Resting tongue posture

    2 weeks

  • +1 more secondary outcomes

Study Arms (1)

Subterranean, pulmonary rehabilitation

OTHER

Pulmonary rehabilitation in the underground salt chambers of the 'Wieliczka' Salt Mine Health Resort

Other: Subterranean, pulmonary rehabilitation

Interventions

Pulmonary rehabilitation in the underground Health Resort of the 'Wieliczka' Salt Mine

Subterranean, pulmonary rehabilitation

Eligibility Criteria

Age65 Years+
Sexall
Healthy VolunteersNo
Age GroupsOlder Adult (65+)

You may qualify if:

  • people aged 65 and older with chronic respiratory diseases in a stable period of the disease (without exacerbations), qualified to participate in a rehabilitation and treatment stay in the underground Health Resort 'Wieliczka' Salt Mine in Wieliczka,
  • patients who gave informed, written consent to participate in the study.

You may not qualify if:

  • patients with contraindications to subterraneotherapy and physical exercise,
  • lack of written consent to participate in the study,
  • deterioration of health during the implementation of the program.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Health Resort 'Wieliczka' Salt Mine in Wieliczka

Wieliczka, Wieliczka, 32-020, Poland

RECRUITING

MeSH Terms

Conditions

Respiration Disorders

Condition Hierarchy (Ancestors)

Respiratory Tract Diseases

Study Officials

  • Sylwia Mętel, PhD

    University of Physicsl Culture in Krakow, Poland al. Jana Pawła II 78, 31-571 Kraków

    STUDY DIRECTOR

Central Study Contacts

Magdalena Kostrzon, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: A Prospective, Controlled, Crossover Study.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 7, 2025

First Posted

April 30, 2025

Study Start

April 4, 2025

Primary Completion

February 28, 2026

Study Completion

February 28, 2026

Last Updated

April 30, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will not share

Locations