Effect of postural breath technique (PBT) on body flexibility in healthy participants with poor flexibility; A randomized controlled trial

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

TCTR

Registry ID

TCTR20240902002

Enrollment

Registered

2024-09-02

Start date

2021-07-01

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

individuals with poor flexibility Body flexibility, Hamstring tightness, Postural breath technique, Athletic performance.

Interventions

The experimental group practiced PBT consisting of 7 exercises. All the exercises involved inhaling for 7 seconds and exhaling for 14 seconds, which had to be repeated six times per sets, for two sets

Experimental Other,Active Comparator Other

Postural breath technique (PBT),Postural muscle stretching (PST)

Eligibility

Sex/Gender

All

Age

18 Years to 24 Years

Inclusion criteria

Inclusion criteria: 1. aged 18 to 24 years 2. individuals with unilateral or bilateral hamstring tightness (PKE angle more than 20 degrees) 3. body mass index of 18.5-24.9 kg/square meter 4. sedentary lifestyle.

Exclusion criteria

Exclusion criteria: 1. factors like regular stretching exercises, muscle relaxant use, fractures of the spine and/or lower extremities, 2. Hamstring muscles tendinitis or muscle strain, and hypermobility 3. severe orthopedic or neurological conditions, abdominal surgery within one year, seizures, respiratory problems, and uncontrolled hypotension or hypertension.

Design outcomes

Primary

Measure	Time frame
Sit and Reach Test baseline, after 1st training and after 4th week. maximum reach in centimeters	—

Secondary

Measure	Time frame
Modified-Modified Schober Test baseline, after 1st training and after 4th week. The difference between measurements in standing and bending forward recorded as lumber flexion in centimeters,Passive Knee Extension Test baseline, after 1st training and after 4th week. the assessor bends one hip to 90 degrees, The assessor then slowly extends the bent knee until a tolerable stretch is felt in the posterior thigh, recording the angle. ,The Craniovertebral Angle Test baseline, after 1st training and after 4th week. the angle between the line from C7 to the tragus and the horizontal line was measured using a goniometer.	—

Measure

Time frame

Modified-Modified Schober Test baseline, after 1st training and after 4th week. The difference between measurements in standing and bending forward recorded as lumber flexion in centimeters,Passive Knee Extension Test baseline, after 1st training and after 4th week. the assessor bends one hip to 90 degrees, The assessor then slowly extends the bent knee until a tolerable stretch is felt in the posterior thigh, recording the angle. ,The Craniovertebral Angle Test baseline, after 1st training and after 4th week. the angle between the line from C7 to the tragus and the horizontal line was measured using a goniometer.

—

Countries

Thailand

Contacts

Public ContactYodchai Boonprakob

Khon Kaen University

yodchai@kku.ac.th0897106899

Outcome results

None listed

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