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NCT Number: NCT07090356

Instrument-Assisted Soft Tissue Mobilization Versus PNF Stretching in Athletes With Piriformis Syndrome

A 12-month randomized controlled trial will be conducted at Pakistan Sports Board, Lahore, with 40 athletes (18-35 years) randomly allocated to IASTM (n=20) or PNF (n=20) groups. Interventions were administered 3 times/week for 4 weeks. Outcomes included Numeric Pain Rating Scale (NPRS), goniometric hip ROM, and Oswestry Disability Index (ODI).

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Key information

Age range

18 year–35 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Pakistan Sports Board

Lahore, Punjab Province, 54000, Pakistan

Location status: Recruiting

Location contact

Hafiz Amir

CONTACT

04299230383

Rukash Mehar, DPT

PRINCIPAL_INVESTIGATOR

About this study

The objective of this study will be to compare the effectiveness of IASTM versus PNF stretching to manage Piriformis Syndrome in a 4 - week randomized controlled trial (RCT). Random allocation was done to the IASTM group or the PNF stretching group. Physiotherapy interventions to reduce pain, increase muscle flexibility and increase functional outcomes will be given to both groups.

Before the intervention, all participants will underween a comprehensive assessment, including:

  • Numeric Pain Rating Scale (NPRS) for pain intensity
  • Oswestry Disability Index (ODI) for functional disability
  • Goniometric measurement for hip joint range of motion (ROM)

Group A: Instrument-Assisted Soft Tissue Mobilization (IASTM) Group

IASTM therapy was provided to participants in whom a specialized instrument was used to apply controlled pressure over the piriformis muscle as well as surrounding soft tissues. The procedure included:

  • Warm-up: Light aerobic exercise (5 minutes)
  • IASTM Application: Applied over the piriformis muscle in a longitudinal and cross-fiber pattern for 5-7 minutes
  • Static stretching of the piriformis and gluteal muscle activation exercises are completed next.
  • Cool-down: Light stretching and relaxation

Group B: Proprioceptive Neuromuscular Facilitation (PNF) Stretching Group

PNF stretching (contract relax; hold relax) was implemented to stretch participants' muscles as flexibly and with as much control as possible. The procedure included:

  • Warm-up: Light aerobic exercise (5 minutes)
  • PNF Stretching:
  • The second technique was based on hold-relax technique during which the participant actively contracted the piriformis muscle against resistance for 5 seconds, followed by a 10 seconds passive stretch.
  • Contract relax technique: same as the above but with deeper stretches following an active contraction
  • Repeated for 3 sets per session
  • Exercises to strengthen the core and hip muscles to provide stability
  • Gentle stretching and deep breathing for cool down

Physiotherapy Management (Common for Both Groups)

In addition, the following was provided to all the participants together with their respective interventions:

  • Ice/heat application as needed (based on the individual).
  • Education & Ergonomic Advice: Guidance on proper posture, activity modification, and self-care techniques Specific exercises will be assigned to maintain flexibility and strength (Home Exercise Program).

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Professional Athletes aged 18 to 35 years.
  • Chronic pain in the buttock and hip area.
  • Inability to sit for a prolonged time.
  • Athletes having positive Faber test
  • Both male and female athletes
  • Practicing athletes who are in practice from last 2 years.

Exclusion criteria

  • Trauma history from last 6 months.
  • Other injuries excluding hip pain.
  • Systemic illness.
  • Pre-existing neurological conditions affecting the lower limbs
  • History of lower back surgery

Treatment and study plan

Instrument-assisted Soft Tissue Mobilization

Other

IASTM therapy will be provided to participants in whom a specialized instrument will be used to apply controlled pressure over the piriformis muscle as well as surrounding soft tissues.

Proprioceptive neuromuscular facilitation stretching

Other

PNF stretching (contract relax; hold relax) will be implemented to stretch participants' muscles as flexibly and with as much control as possible.

Primary outcomes

  1. Numeric Pain Rating Scale

    Time frame: 6 weeks

    Numeric Pain Rating Scale

  2. Hip ROM

    Time frame: 6 weeks

    Goniometry

  3. Oswestry Disability Index

    Time frame: 6 weeks

    Questionaire

Study contacts

Contact information is provided by the study sponsor or research team.

Imran Amjad, Phd PT

CONTACT

[email protected]

03324390125

Sponsors and collaborators

Lead sponsor

Riphah International University

Other

Registry information

Official study title

Effects of Instrument-Assisted Soft Tissue Mobilization Versus Proprioceptive Neuromuscular Facilitation Stretching in Athletes With Piriformis Syndrome

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Jul 29, 2025
Registry last updated
Jul 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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