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Visa-versa! Breaking Instead of Pushing the Pedals-B

NCT05185856 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2025-01-23

No results posted yet for this study

Summary

Eccentric muscle work is defined as lengthening of a muscle while applying force. It was shown that with eccentric work, muscles are able to perform four times as much power compared to usual concentric work, which results in huge training gain with a highly decreased oxygen demand and thus lower cardiovascular load. Pulmonary hypertension (PH) is a chronic condition associated with significant reduced exercise capacity and increased morbidity and mortality, resulting in reduced quality of life. Physical training has been shown to be beneficial in PH, even in severely limited patients. However, due to cardiopulmonary constraints in PH, training intensities may be very low, so that many patients are physically almost unable to perform exercise on a high enough level to maintain muscle mass. A low body muscle not only feeds the vicious cycle of decreasing exercise capacity, but also has many deleterious metabolic and immunological consequences which further increase disability and decrease quality of life in PH. Thus, eccentric training, which allows to gain muscle mass with a low stress to the cardiopulmonary unit may to be highly beneficial for patients with PH and allied cardiopulmonary disease, such as chronic obstructive pulmonary disease (COPD) and heart failure. Therefore, the aim of the study is to compare differences in oxygen uptake (peak VO2 \[l/min\]) and other physiological measures during similar cardiopulmonary exercise test protocols of eccentric- vs. concentric cycling in PH- patients and comparators with or without other cardiopulmonary diseases.

Conditions

Interventions

PROCEDURE

15 minutes eccentric cycling

The exposure to eccentric exercise will be individualized-intensity stepwise incremental cycle exercise starting at 50 Watt with individually tailored increments every 5 minutes.

PROCEDURE

15 minutes concentric (normal) cycling

The exposure to concentric exercise will be individualized-intensity stepwise incremental cycle exercise starting at 50 Watt with individually tailored increments every 5 minutes.

Sponsors & Collaborators

  • University of Zurich

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-11-15
Primary Completion
2024-05-31
Completion
2024-05-31

Countries

  • Switzerland

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05185856 on ClinicalTrials.gov