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Assessment of Lung Function (Lufu) at Sea Level LA vs. High Altitude HA in Healthy Individuals

31 agosto 2026 aggiornato da: Silvia Ulrich Somaini

Effect of a One-week Descent From 2850m to Sea Level and Re-ascent in Patients With Pulmonary Arterial Hypertension and Healthy Controls Permanently Living > 2600m on Pulmonary Hemodynamics, Exercise Capacity, Blood Oxygenation, Sleep Disordered Breathing and Further Outcomes

To study the effect of a re-ascent to high altitude (Quito Ecuador: 2850m) after a one-week stay at sea level (after prior descent from 2850m) on lung function and pulmonary resistance/reactance in healthy individuals, who live permanently > 2600m.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

The aim of this research is to investigate the lung function and pulmonary resistance/reactance before and after re-ascent (sea level for 7 days after prior descent from 2850m vs. re-ascent to 2850m) in healthy individuals, who permanently live at high altitude over 2600m.

Tipo di studio

Interventistico

Iscrizione (Stimato)

14

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Backup dei contatti dello studio

  • Nome: Michael Furian, Prof. Dr. sc. ETH
  • Numero di telefono: +41442552220

Luoghi di studio

      • Zurich, Svizzera, 8091
        • University Hospital of Zurich

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

Sì

Descrizione

Inclusion Criteria:

  • Adults aged 18-80 years and of all genders
  • Permanent residence > 2600 m
  • healthy: no self perceived cardiopulmonary disease limiting daily activities
  • written informed consent to participate in the study.

Exclusion Criteria:

  • Age <18 years or >80 years
  • Participants who cannot follow the study investigations
  • Participants permanently living < 2600m
  • Participants who traveled and stayed overnight at altitudes <2000 m in the past 4 weeks.
  • any self-perceived cardiopulmonary disease limiting daily activities

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Terapia di supporto
  • Assegnazione: N / A
  • Modello interventistico: Assegnazione di gruppo singolo
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Lung function at sea level and at 2850m
Assessment of lung function and pulmonary resistance/reactance on day four at sea level (after prior descent from 2850m) and after re-ascent (after totally one week at sea level) back to 2850m by bus (in one day)
Descent from 2850m to sea level with a stay for 7 days and re-ascent/return back to their usual living altitude at 2850m

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
FEV1 after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in forced expiratory volume in one second FEV1 between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Forced Vital Capacity FVC after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in forced vital capacity FVC between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)
FEV1/FVC after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in FEV1/FVC between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)
Respiratory Impedance (forced oscillation technique) after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in respiratory impedance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)
Respiratory resistance (forced oscillation technique) after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in respiratory resistance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)
Respiratory reactance (forced oscillation technique) after re-ascent to 2850m
Lasso di tempo: From Day 4 at sea level to the day after re-ascent (Day 9)
Difference/change in respiratory reactance (forced oscillation technique) between sea level (measurement on the 4th day) and day after re-ascent to 2850m in healthy individuals
From Day 4 at sea level to the day after re-ascent (Day 9)
FEV1 after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in FEV1 between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
Forced Vital Capacity FVC after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in forced vital capacity FVC between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
FEV1/FVC after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in FEV1/FVC between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
Respiratory Impedance (forced oscillation technique) after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in respiratory Impedance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
Respiratory resistance (forced oscillation technique) after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in respiratory resistance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
Respiratory reactance (forced oscillation technique) after 4 days at sea level
Lasso di tempo: From high altitude (2850m) to day 4 at sea level
Difference/change in respiratory reactance (forced oscillation technique) between 2850m (prior to descent) and day 4 at sea level in healthy individuals
From high altitude (2850m) to day 4 at sea level
FEV1 pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in FEV1 at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Forced Vital Capacity FVC pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in forced vital capacity FVC at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
FEV1/FVC pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in FEV1/FVC at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory Impedance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory impedance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory resistance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory resistance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Respiratory reactance (forced oscillation technique) pre-descent and after re-ascent (2850m)
Lasso di tempo: Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)
Difference/change in respiratory reactance (forced oscillation technique) at 2850m with a one-week stay at sea level in between (day pre-descent vs. day after re-ascent) in healthy individuals
Baseline at 2850m followed by a one-week stay at sea level to the day after re-ascent back to 2850m (time frame approximately 11 days)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Investigatori

  • Investigatore principale: Silvia Ulrich, University Hospital Zurich, Departement of Pulmonology
  • Investigatore principale: Rodrigo Hoyos, Hospital Carlos Andrade Marin of Quito, Ecuador

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

25 settembre 2026

Completamento primario (Stimato)

4 ottobre 2026

Completamento dello studio (Stimato)

31 dicembre 2026

Date di iscrizione allo studio

Primo inviato

17 agosto 2026

Primo inviato che soddisfa i criteri di controllo qualità

31 agosto 2026

Primo Inserito (Effettivo)

4 settembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

4 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

31 agosto 2026

Ultimo verificato

1 agosto 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • Ec_LAvsHA_Lufu_H

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

SÌ

Descrizione del piano IPD

Data will be provided upon request and based on a clear intention reviewed by an ethical review board.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .