Effects of Foam Rolling Prior to PNF Stretching on Hamstring Flexibility and Thigh Skin Temperature in Healthy Subjects

Effects of Foam Roller Application Prior to Proprioceptive Neuromuscular Facilitation Stretching on Hamstring Flexibility and Thigh Skin Temperature in Healthy Subjects

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04718363

Acronym

PNF

Enrollment

Registered

2021-01-22

Start date

2021-01-27

Completion date

2021-09-15

Last updated

2021-02-02

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

Conditions

Healthy

Keywords

hamstring muscles, PNF stretching, foam rolling, thermal imaging, flexibility, range of motion, vibration

Brief summary

There is no study investigating the hamstring flexibility and skin temperature after combined warm-up techniques especially PNF and foam rolling. The main purpose of this study is to investigate the effects of foam roller application prior to proprioceptive neuromuscular facilitation stretching on hamstring flexibility and thigh skin temperature in healthy subjects.Secondly, it is aimed to compare the effects between non-vibration foam rolling and vibration foam rolling on measured parameters.

Detailed description

In this study forty-eight subjects will be voluntarily recruited into the study according to inclusion criteria. Participants will be randomly assigned to Vibration Foam Rolling + PNF stretching, Non-Vibration Foam Rolling + PNF stretching, only PNF stretching and control group. Subjects will be evaluated before, immediately after and 30 minutes after intervention. Hamstring flexibility will be evaluated with Active Knee Extension Angle (AKEA) Test and functionally Sit and Reach test. Thigh skin temperature will be evaluated with thermographic imaging.

Interventions

OTHERPNF stretching

A contract-relax PNF stretching technique will be applied to hamstring muscle.

OTHERNon-vibration foam rolling prior to PNF stretching

Prior to PNF stretching, participant will perform unilateral hamstring non-vibration foam rolling.

OTHERVibration foam rolling prior to PNF stretching

Prior to PNF stretching, participant will perform unilateral hamstring vibration foam rolling (48 Hz).

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* 18 years and older, * Having limitation of 20 degrees or more in knee extension angle in AKEA test, * Right side lower extremity dominance

Exclusion criteria

* History of lower extremity injury in the last 12 months * Having neurological or psychological problem * Doing a stretching based exercise recently * History of pain in the lower body and extremity in the Nordic Musculoskeletal Questionnaire * Having lower extremity deformity

Design outcomes

Primary

Measure	Time frame	Description
Change in hamstring flexibility	Change from baseline hamstring flexibility at immediately after intervention and 30 minutes after intervention	Active Knee Extension test in supine position will be performed to measure hamstring flexibility.
Change in thigh skin temperature	Change from baseline skin temperature at immediately after intervention and 30 minutes after intervention	Posterior thigh skin temperature will be evaluated using thermographic imaging with infrared thermal camera.
Change in functional hamstring flexibility	Change from baseline functional hamstring flexibility at immediately after intervention and 30 minutes after intervention	Sit-and-Reach test will be performed to measure functional hamstring flexibility.

Countries

Turkey (Türkiye)

Contacts

Primary ContactSinem Yenil

sinemyenil_96@hotmail.com00904124924

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026