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Diaphragmatic Breathing Exercises With KOTS Currents in Patients With Long COVID

NCT07621588 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2026-06-04

No results posted yet for this study

Summary

This study will evaluate the effects of diaphragmatic breathing exercises combined with diaphragmatic electrostimulation using KOTS currents in patients with Long COVID. Participants will be randomly assigned to one of two groups. The control group will perform diaphragmatic breathing exercises, while the intervention group will perform diaphragmatic breathing exercises combined with diaphragmatic electrostimulation using KOTS currents. The intervention will last three weeks, with two sessions per week. The study will assess respiratory function, quality of life, physical function, dyspnea, fatigue, and basal oxygen saturation.

Conditions

  • Long COVID Syndrome
  • Post-Acute COVID-19 Syndrome

Interventions

DEVICE

Diaphragmatic Electrostimulation Using KOTS Currents

Diaphragmatic electrostimulation will be applied using KOTS currents, a medium-frequency alternating current stimulation. Electrodes will be placed over the seventh and eighth rib region along the mammillary line. Stimulation will be delivered in trains of 4 seconds of stimulation followed by 8 seconds of rest, with a carrier frequency of 2,500 Hz. The standard treatment duration will be 15 minutes: 10 minutes at 30 Hz followed by 5 minutes at 70 Hz. Stimulation intensity will be adjusted according to participant tolerance. The intervention will be delivered twice per week for three weeks, together with diaphragmatic breathing exercises.

BEHAVIORAL

Diaphragmatic Breathing Exercises

Participants will perform diaphragmatic breathing exercises in a supine position with the knees flexed. One hand will be placed on the chest and the other hand below the sternum. Participants will be instructed to inhale through the nose while expanding the abdomen with minimal thoracic movement, and to exhale slowly through pursed lips. The breathing pattern will include a 4-second inspiration and a 6-second expiration. Exercises will be performed twice per week for three weeks.

Sponsors & Collaborators

  • Universidad Pontificia de Salamanca

    lead OTHER

Principal Investigators

  • Sara Perpiña-Martínez · Pontifical University of Salamanca

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

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

Timeline & Regulatory

Start
2026-06-30
Primary Completion
2026-07-31
Completion
2026-07-31

Countries

  • Spain

Study Locations

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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 NCT07621588 on ClinicalTrials.gov