Comparison of the Effects of Static Stretching and Full Range of Motion Strength Training on Posterior Band Flexibility

NCT07061041 | Recruiting

• 1 other identifier: SKE.0030.59.2025
• Study Type: interventional
• Target: 51
• Locations: 1 country
• Sites: 1

Brief Summary

The study will be conducted in 2025. The methods used in the study are non-invasive methods. One study group will perform 2 series of static stretching of the posterior band once a week. The stretching time in each series will be 60s, and the duration of the intervention will be 6 weeks. The test subjects will maintain a maximum prone position with their knee joints straight for a specified period of time during the stretching. The second study group will perform full range of motion strength training in the form of 3 series of 10 repetitions of the Romanian Deadlift (RDL) once a week, with the intervention duration also being 6 weeks. Prior to the start of the study, participants will undergo a toe-to-floor test to assess posterior band flexibility. The test will be repeated again after the intervention. Translated with DeepL.com (free version)

Conditions

Flexibility; Strength Training Effects; Static Stretching

Keywords

flexibility; static streching; minimal-dose; hamstring flexibility

Outcome Measures

Primary Outcomes (1)

• Flexibility

  Flexibility was assessed using a modified stand-and-reach test. The participants stood with their feet shoulder-width apart and knees fully extended, then performed a forward bend, reaching as far as possible while maintaining straight legs. To measure the extent of their reach, a custom-built box was used. The box had the following dimensions: a length of 40 cm, a width of 45 cm, and a height of 35 cm. Each participant performed the test once. The same test was repeated after the 6-week intervention period to determine any improvements in flexibility.

  From registration to completion of the study, the duration is up to 8 weeks

Study Arms (3)

Control group

NO INTERVENTION

Only tests were performed in the group, no intervention was introduced

Streching group

EXPERIMENTAL

The group performed one training session per week consisting of 2 sets of 60 seconds of static stretching

Other: Streching group

Strength training group

EXPERIMENTAL

The group will perform one workout per week consisting of 3 series of the "Romanian deadlift" exercise of 10 repetitions. Each repetition will be performed at a specific pace - 3s in eccentric contraction and 1s in concentric contraction. The aforementioned exercise, the Romanian deadlift, will be performed by the subjects on a platform (elevation) in order to achieve maximum range of motion.

Other: Strength training

Interventions

Strength training OTHER

The group will perform one workout per week consisting of 3 series of the "Romanian deadlift" exercise of 10 repetitions. Each repetition will be performed at a specific pace - 3s in eccentric contraction and 1s in concentric contraction. The aforementioned exercise, the Romanian deadlift, will be performed by the subjects on a platform (elevation) in order to achieve maximum range of motion.

Strength training group

Streching group OTHER

The group performed one training session per week consisting of 2 sets of 60 seconds of static stretching

Streching group

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Age over 18 years,
• No lower limb injuries, no spinal injuries and no craniocerebral injuries in the last 6 months,
• No lower limb surgeries, no spinal surgeries and no central nervous system surgeries in the last 6 months,

You may not qualify if:

• Age under 18 years
• Injuries to the lower limbs, spine or craniocerebral injuries within the last 6 months,
• Surgical procedures to the lower limbs, spine or surgical procedures to the central nervous system within the last 6 months,

Sponsors & Collaborators

• Józef Piłsudski University of Physical Education: lead

Study Sites (1)

Józef Piłsudski Academy of Physical Education in Warsaw

Warsaw, 00-968, Poland

RECRUITING

Related Publications (2)

• Shadmehr A, Hadian MR, Naiemi SS, Jalaie S. Hamstring flexibility in young women following passive stretch and muscle energy technique. J Back Musculoskelet Rehabil. 2009;22(3):143-8. doi: 10.3233/BMR-2009-0227.

  PMID: 20023343 BACKGROUND

• Zhao S, Robertson DD, Wang G, Whiting B, Bae KT. X-ray CT metal artifact reduction using wavelets: an application for imaging total hip prostheses. IEEE Trans Med Imaging. 2000 Dec;19(12):1238-47. doi: 10.1109/42.897816.

  PMID: 11212372 BACKGROUND

MeSH Terms

Interventions

Resistance Training

Intervention Hierarchy (Ancestors)

Exercise Therapy; Rehabilitation; Aftercare; Continuity of Patient Care; Patient Care; Therapeutics; Physical Therapy Modalities; Physical Conditioning, Human; Exercise; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Laboratory Assistant

Study Record Dates

• First Submitted: July 2, 2025
• First Posted: July 11, 2025
• Study Start: July 2, 2025
• Primary Completion: August 20, 2025
• Study Completion: August 25, 2025
• Last Updated: July 11, 2025

Record last verified: 2025-07

Data Sharing

• IPD Sharing: Will not share

Locations

PL (1)