Changes in respiratory and accessory muscle activities and cardiovascular functions during breathing exercise with and without device in healthy adults

Change in respiratory muscle activities during five types of breathing exercise in healthy adults

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20240609002

Enrollment

Registered

2024-06-09

Start date

2024-06-05

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy adults respiratory muscle breathing exercises electromyography cardiovascular system respiratory system

Interventions

Perform breathing exercise by Costal breathing exercise with sustained maximal inspiration technique.,Perform breathing exercise with Flow incentive spirometer.,Perform breathing exercise with Volume

Device Feasibility,Device Feasibility,Device Feasibility,Device Feasibility,Device Feasibility

Costal breathing exercise with sustained maximal inspiration,Flow incentive spirometer,Volume incentive spirometer,NaTu BreathNHold,Digital incentive spirometer

Eligibility

Sex/Gender

All

Age

25 Years to 50 Years

Inclusion criteria

Inclusion criteria: 1. Body mass index; BMI = 18.5-22.9 kg/m2 2. Have normal spirometry including Forced vital capacity (FVC), Forced expiratory volume in one second (FEV1) and FEV1/FVC

Exclusion criteria

Exclusion criteria: 1. Have cardiovascular and respiratory disease 2. Have sign and symptoms of cardiovascular and respiratory disease in 1 month 3. Have deformity of spine and chest wall 4. Take caffeine and/or alcohol and/or cannabis within 4 hour before test in 2nd day 5. High blood pressure with uncontrol more than 140/90 mmHg.

Design outcomes

Primary

Measure	Time frame
%Maximal voluntary contraction at baseline, 3rd, 6th and 9th of breathing %Maximal voluntary contraction of sternocleidomastoid, superior external intercostal and inferior external intercostal muscles,Hemodynamic measurement at baseline, 3rd, 6th and 9th of breathing heart rate (HR), cardiac output (CO), stroke volume (SV) and ejection fraction (EF),Heart rate variability; HRV at baseline, 3rd, 6th and 9th of breathing standard deviation of all normal to normal R-R (NN) intervals, square root of the mean of the squares of successive NN interval differences, High frequency activity , Low frequency activity, LF/HF,Breathlessness at pre and post test Modified Borg Dyspnea Scale	—

Measure

Time frame

%Maximal voluntary contraction at baseline, 3rd, 6th and 9th of breathing %Maximal voluntary contraction of sternocleidomastoid, superior external intercostal and inferior external intercostal muscles,Hemodynamic measurement at baseline, 3rd, 6th and 9th of breathing heart rate (HR), cardiac output (CO), stroke volume (SV) and ejection fraction (EF),Heart rate variability; HRV at baseline, 3rd, 6th and 9th of breathing standard deviation of all normal to normal R-R (NN) intervals, square root of the mean of the squares of successive NN interval differences, High frequency activity , Low frequency activity, LF/HF,Breathlessness at pre and post test Modified Borg Dyspnea Scale

—

Secondary

Measure	Time frame
N/A N/A N/A	—

Countries

Thailand

Contacts

Public ContactSasipa Buranapuntalug

Physical Therapy Department, Allied Health Science, Thammasat University

sasipa.b@allied.tu.ac.th029869213

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026