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Comparative Effects of Vocal and Breathing Exercises on Respiratory Function and Trunk Stability in Women

NCT07175844 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2025-09-16

No results posted yet for this study

Summary

The goal of this randomized clinical trial is to investigate whether vocal exercises or breathing exercises improve respiratory function and trunk stability in healthy adult women aged 18-65. The main questions it aims to answer are:

Do vocal exercises improve respiratory function, respiratory muscle strength, endurance, and trunk stability? Do breathing exercises improve respiratory function, respiratory muscle strength, and endurance? Researchers will compare the vocal exercises group to the breathing exercises group to determine if one intervention has a superior effect on lung function, respiratory muscle performance, and trunk stability.

Participants will:

Perform a 6-week program of either vocal exercises or breathing exercises, with sessions twice per week, 30 minutes each.

Complete pre- and post-intervention assessments including thoracic excursion, breath-hold tests, spirometry, Dynamic Neuromuscular Stabilization (DNS) tests, and trunk stability tests using the Stabilizer pressure biofeedback device.

Engage with instructional videos and guidance through a closed social media group, allowing questions and feedback to ensure correct technique.

Conditions

  • Healthy Subjects

Interventions

OTHER

Vocal exercises

Participants performed six weekly sessions of 30 minutes, guided by videos focusing on diaphragmatic breathing and contemporary singing techniques. Initial exercises (weeks 1-2) included sustained "s" sounds, lip trills, humming, melodic vowel sequences, and "Ja" exercises. Weeks 3-6 included advanced solo exercises such as short and long "S", humming variations, "mum" vocalizations, rhythmic patterns ("cha-cha-cha"), melodic sequences ("Niemak 1-3"), and counting exercises. Exercises were performed standing, preferably in front of a mirror.

OTHER

Breathing exercises

Participants in the breathing exercises group were given access to a 30-minute instructional video, in which a licensed physiotherapist demonstrated how to perform the exercises. Participants were instructed to complete the exercises twice per week at a time convenient for them. They could reflect on the exercises and submit questions to the physiotherapist within a closed social media group. Two weeks after the start of the intervention, participants were advised to increase the intensity of the exercises: lengthening inhalation, exhalation, and breath-holding during square breathing, and increasing the number of exhalations during "Kapalabhati" breathing from 20 to 60 per series, while respecting individual comfort and tolerance.

Sponsors & Collaborators

  • Lithuanian Sports University

    lead OTHER

Principal Investigators

  • Eirida S Kudirkienė, MSc · Lithuanian Sports University

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-12-10
Primary Completion
2024-12-12
Completion
2025-05-01

Countries

  • Lithuania

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 NCT07175844 on ClinicalTrials.gov