Effects of PIR and PFS on Pain, ROM, and Disabilty in Tight Hamstring Syndrome

NCT06796491 | Completed

• 1 other identifier: REC/RCR&AHS/24/0155
• Study Type: interventional
• Target: 46
• Locations: 1 country
• Sites: 1

Brief Summary

This randomized clinical trial aims to compare the effects of post-isometric relaxation (PIR) and post-facilitation stretch (PFS) on pain, range of motion, and disability in individuals with tight hamstring syndrome. Conducted at Riphah Rehabilitation Clinic, Lahore, participants aged 18-35 years with posterior thigh pain will be divided into two groups. Both groups will receive hot pack therapy and core strengthening exercises, with Group A receiving PIR and Group B receiving PFS. Outcomes will be assessed at baseline and after 4 weeks using NPRS, a disability questionnaire, and a goniometer, with data analyzed using SPSS version 25.

Conditions

Hamstrings; Flexibility; Range of Motion; Disability

Keywords

Hamstrings; Flexibility; Muscle Energy Techniques; Range of motion; Post Facilitation Stretching; Post Isometric relaxation

Outcome Measures

Primary Outcomes (1)

• Numeric pain rating scale

  The severity of pain will be measured by using the NPRS scale, which goes from '0' (meaning there is no pain) to 10'' (meaning there is most agony possible) ("pain is severe as you can imagine"). It was accepted that the scale was convenient for determining patients' pain thresholds. The NPRS scale has a score range of 0 to 10. It was a valid and reliable tool. Va;idity ranging from 0.79 to 0.95 and reliability from 0.67 to 0.96.

  4th week

Secondary Outcomes (2)

• Active Knee Extension Test

  4th week

• Modified Oswestry Disability Index

  4th week

Study Arms (2)

Post Isometric Relaxation

EXPERIMENTAL

Patient applied the sub-maximal contraction almost 20%. Isometric contraction will be held for 10 seconds and then slight stretch for 30 seconds will be maintained. 4 contractions per treatment with 3 seconds rest between each contraction. This protocol continues 3 days/week for 4 weeks

Other: Post Isometric relaxation

Post Facilitation Stretch

ACTIVE COMPARATOR

Isometric contraction will be held for 10 seconds and then slight stretch for 30 seconds will be maintained. 4 contractions per treatment with 3 seconds rest between each contraction. This protocol continues 3 days/week 4 weeks. for hamstring flexibility

Other: Post Facilitation stretch

Interventions

Post Isometric relaxation OTHER

Group A will receive Post Isometric Relaxation (PIR) Patient applied the sub-maximal contraction almost 20%. Isometric contraction was held for 10 seconds and then slight stretch for 30 seconds was maintained.4 contractions per treatment with 3 seconds rest between each contraction. This protocol continues 3 days/week for 4 weeks conventional treatment Hot pack for 10 minutes Pelvic bridging: The subjects will be asked to lie supine and with knee flexed and then raise the pelvis upward till the comfort then hold that position for 5 sec and repetitions were 10 times Cat and camel: The subjects will be requested to prone kneel and then take a deep breath from nose while making hump in the back (cat) and breathe out from mouth while curving the spine (camel) for 5 second 10 times repetitions

Post Isometric Relaxation

Post Facilitation stretch OTHER

Group B will receive Post Facilitation Stretch (PFS) Isometric contraction was held for 10 seconds and then slight stretch for 30 seconds was maintained. 4 contractions per treatment with 3 seconds rest between each contraction. This protocol continues 3 days/week 4 weeks. for hamstring flexibility conventional treatment Hot pack for 10 minutes Pelvic bridging: The subjects will be asked to lie supine and with knee flexed and then raise the pelvis upward till the comfort then hold that position for 5 sec and repetitions were 10 times Cat and camel: The subjects will be requested to prone kneel and then take a deep breath from nose while making hump in the back (cat) and breathe out from mouth while curving the spine (camel) for 5 second 10 times repetitions

Post Facilitation Stretch

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• Both male and female
• Age between 18 to 35 years(45)
• Bilateral hamstring muscle tightness
• Individuals having lack of Active knee extension more than 20 degrees(46)

You may not qualify if:

• Low back pain radiating to the back of thigh
• History of fracture, dislocation of hip(47)
• Acute or chronic hamstring injury
• Any neurological disease(48)
• Congenital deformity of the lower limb
• Inflammatory condition that affects motion
• A history of a cervical whiplash injury(45)

Sponsors & Collaborators

• Riphah International University: lead

Study Sites (1)

Zafar Hospital lahore

Lahore, Punjab Province, 54810, Pakistan

Location

Related Publications (8)

• Castellote-Caballero Y, Valenza MC, Puentedura EJ, Fernandez-de-Las-Penas C, Alburquerque-Sendin F. Immediate Effects of Neurodynamic Sliding versus Muscle Stretching on Hamstring Flexibility in Subjects with Short Hamstring Syndrome. J Sports Med (Hindawi Publ Corp). 2014;2014:127471. doi: 10.1155/2014/127471. Epub 2014 Apr 15.

  PMID: 26464889 BACKGROUND

• Duhig S, Shield AJ, Opar D, Gabbett TJ, Ferguson C, Williams M. Effect of high-speed running on hamstring strain injury risk. Br J Sports Med. 2016 Dec;50(24):1536-1540. doi: 10.1136/bjsports-2015-095679. Epub 2016 Jun 10.

  PMID: 27288515 BACKGROUND

• Woods C, Hawkins RD, Maltby S, Hulse M, Thomas A, Hodson A; Football Association Medical Research Programme. The Football Association Medical Research Programme: an audit of injuries in professional football--analysis of hamstring injuries. Br J Sports Med. 2004 Feb;38(1):36-41. doi: 10.1136/bjsm.2002.002352.

  PMID: 14751943 BACKGROUND

• Rahnama N. Prevention of football injuries. Int J Prev Med. 2011 Jan;2(1):38-40. No abstract available.

  PMID: 21448404 BACKGROUND

• Skoffer B. Low back pain in 15- to 16-year-old children in relation to school furniture and carrying of the school bag. Spine (Phila Pa 1976). 2007 Nov 15;32(24):E713-7. doi: 10.1097/BRS.0b013e31815a5a44.

  PMID: 18007232 BACKGROUND

• Arab AM, Nourbakhsh MR. Hamstring muscle length and lumbar lordosis in subjects with different lifestyle and work setting: comparison between individuals with and without chronic low back pain. J Back Musculoskelet Rehabil. 2014;27(1):63-70. doi: 10.3233/BMR-130420.

  PMID: 23948840 BACKGROUND

• Hollman JH, Berling TA, Crum EO, Miller KM, Simmons BT, Youdas JW. Do Verbal and Tactile Cueing Selectively Alter Gluteus Maximus and Hamstring Recruitment During a Supine Bridging Exercise in Active Females? A Randomized Controlled Trial. J Sport Rehabil. 2018 Mar 1;27(2):138-143. doi: 10.1123/jsr.2016-0130. Epub 2018 Mar 1.

  PMID: 28121207 BACKGROUND

• Kumazaki T, Ehara Y, Sakai T. Anatomy and physiology of hamstring injury. Int J Sports Med. 2012 Dec;33(12):950-4. doi: 10.1055/s-0032-1311593. Epub 2012 Aug 15.

  PMID: 22895873 BACKGROUND

Study Officials

• Hira Shaukat, TDPT

  Riphah International University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 22, 2025
• First Posted: January 28, 2025
• Study Start: March 10, 2025
• Primary Completion: July 1, 2025
• Study Completion: July 13, 2025
• Last Updated: July 15, 2025

Record last verified: 2025-07

Data Sharing

• IPD Sharing: Will not share

Locations

PA (1)