ClinicalTrials.gg
Not yet recruitingNCT06370741Updated Apr 17, 2024

Effect of Stretching Exercises on Plantar Fascia

An interventional study of Stretching with/without device in Stretch, Plantar Fascia; Contracture and Fasciitis, Plantar, sponsored by Okan University. Not yet recruiting. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-04-17.

Sponsored by Okan University · Not applicable, Interventional, and Device feasibility

From the registry’s dates

  • Primary completion was expected by May 2024, 2 years 6 months ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The plantar fascia (PF) extends over the calcaneal bone with a thin band corresponding to the calcaneal periosteum, continuing as the paratenon of the Achilles tendon.The triceps surae complex, serving as the main extensor and propulsion system of the foot, involves the Achilles tendon, posterior part of the calcaneus, and Plantar Aponeurosis, all integrated with the fibrous skeleton of the triceps surae. Plantar fasciitis, a prevalent musculoskeletal condition affecting individuals of various ages and activity levels (Hye Chang Rhim), is a primary cause of heel pain in adults. Studies have identified the superior efficacy of stretching protocols targeting the Achilles tendon and/or plantar fascia compared to alternative treatments. However, the limitations of traditional approaches become apparent when considering the intricate biomechanics of the foot and ankle. Conventional calf stretches often prove inadequate for addressing its specific lengthening requirements. While contemporary methods like PF-Specific Stretching integrate plantar fascia and calf stretches, their reliance on individual upper extremity strength introduces potential limitations.

Therefore, although the exact effect of stretching on the biomechanical properties of the plantar fascia is not known, it will be aimed to determine whether an instrument aid to be designed will have an effect and which method is more effective. In this way, it is planned to guide clinicians in the rehabilitation of possible pathologies specific to the plantar fascia in clinical practice.

Myotonometry is a convenient method to assess the stiffness of the plantar fascia because it is cheap, simple and fast. Previous studies have shown that MyotonPRO can reliably assess the stiffness of the plantar fascia. Although the exact effect of stretching on the biomechanical properties of the plantar fascia is not known, it will be determined whether stretching with an instrument to be designed will have an effect and which method is more effective with or without an instrument.

Read the detailed description

The intricate network of connective tissues in the foot, including the plantar aponeurosis (PA) originating from the calcaneus, sets the stage for a comprehensive understanding of conditions like plantar fasciitis. This broad and thick band runs longitudinally, forming distinct components crucial for maintaining the arch's integrity. Complementing this structure is the plantar fascia (PF), intricately connected to the superficial and deep muscles of the sole, creating a myofascial continuum with profound implications for foot biomechanics.

The interplay between the plantar fascia, Achilles tendon, and the Plantar Aponeurosis within the triceps surae complex emphasizes their collective role as the main extensor and propulsion system of the foot. The posterior compartment of the lower leg, housing various muscles, further underscores the complexity of this biomechanical system.

Nonoperative interventions, constituting approximately 90% effectiveness, encompass a range of approaches, including stretching exercises, modalities, and shock wave therapy, among others. Notably, studies have identified the superior efficacy of stretching protocols targeting the Achilles tendon and/or plantar fascia compared to alternative treatments.

However, the limitations of traditional approaches become apparent when considering the intricate biomechanics of the foot and ankle. Conventional calf stretches often prove inadequate for addressing its specific lengthening requirements. While contemporary methods like PF-Specific Stretching integrate plantar fascia and calf stretches, their reliance on individual upper extremity strength introduces potential limitations.

Myotonometry is a convenient method to assess the stiffness of the plantar fascia because it is cheap, simple and fast. Previous studies have shown that MyotonPRO can reliably assess the stiffness of the plantar fascia.

In the light of all this information, although the exact effect of stretching on the biomechanical properties of the plantar fascia is not known, it will be aimed to determine whether an instrument aid to be designed will have an effect and which method is more effective. In this way, it is planned to guide clinicians in the rehabilitation of possible pathologies specific to the plantar fascia in clinical practice.

Myotonometry is a convenient method to assess the stiffness of the plantar fascia because it is cheap, simple and fast. Previous studies have shown that MyotonPRO can reliably assess the stiffness of the plantar fascia. Although the exact effect of stretching on the biomechanical properties of the plantar fascia is not known, it will be determined whether stretching with an instrument to be designed will have an effect and which method is more effective with or without an instrument.

02

Conditions studied

  • Stretch
  • Plantar Fascia; Contracture
  • Fasciitis, Plantar
03

In context

Contracture

79 studies on the registry are indexed under Contracture; 18 are open to participants now.

This study's planned enrollment of 10 is below the median of 33 across 62 interventional studies indexed under Contracture.

Browse Contracture studies →

Lead sponsor

Okan University is the lead sponsor of 97 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Healthy volunteers over 18 years of age with a below 30 kg/m²

Exclusion criteria

Exclusion Criteria:

  • pregnancy, presence of chronic musculoskeletal diseases, presence of lower extremity injury and/or surgery, presence of skin lesions above the measurement sites and use of medications affecting the musculoskeletal system
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    Achilles tendon stretching

    Participants in this group will use a stretching device designed to stretch the dominant side Achilles tendon. With the help of this tool, the fingers will be positioned in extension and the other leg will be placed in front with the dominant side leg at the back. The knee of the other leg will be bent forward while the back knee is kept straight with the heel firmly on the ground. The toes of the evaluated foot will point to the heel of the front foot. For the non-dominant side, the same stretching exercise will be performed without equipment.

    Device: Stretching with/without device

  • Active comparator
    Plantar fascia specific stretching

    A special stretching protocol known as PFSS (Plantar Fascia-Specific Stretching) will be applied. The method will be performed by placing the non-dominant leg over the opposite leg in a seated position. Following this, participants will apply force distal to the metatarsophalangeal joints in the assessed foot and pull the toes upwards towards the proximal side until a visible stretch is felt in the plantar fascia. Participants in this group will use the stretching device designed for their dominant side. The method will be performed by placing the toes on the bar of the device in the extension position and moving the knee forward so that the foot is in the dorsiflexion position without lifting the heel off the ground.

    Device: Stretching with/without device

Interventions

  • DeviceStretching with/without device

    Participants will be divided into two groups: Achilles tendon stretching and plantar fascia specific stretching. Within these two groups, participants will stretch their dominant side with the help of the designed tool. On the non-dominant side, the Achilles tendon group will complete the Achilles tendon stretching without a tool and the plantar fascia-specific stretching group will complete the self plantar fascia stretching exercise. Each stretching exercise will be performed for 10 seconds and 10 repetitions 3 days a week for 2 weeks.

06

What researchers measure

Primary outcomes

  1. Plantar Fascia Mechanical Properties

    MyotonPRO, an objective assessment method, will be used to evaluate the mechanical properties of the plantar fascia such as tone, stiffness and elasticity. MyotonPRO is a portable palpation device designed to assess the tone and biomechanical properties of muscle, tendon and fascia. This allows simultaneous calculation of the mechanical properties of the fascia: tonus - tension (frequency; Hz), stiffness - intramuscular resistance (N/m) and elasticity (characterized by decrement - logarithmic decrease)

    Time frame: Before treatment/ Immediately after the first stretching exercise/ At the end of the second week

07

Study locations

No study locations are listed for this record.

08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Apr 2024; primary completion for May 2024, 1 month later.

Of 30 interventional studies with no phase under Contracture, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 55. This study's planned 1 month is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 5, 2024
First posted
Apr 17, 2024
StartEst.
Apr 2024
Primary completionEst.
May 2024
CompletionEst.
Jun 2024
Last update
Apr 17, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 17, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06370741
Lead sponsor
Okan University
Responsible party
Ozgur Surenkok (Assistant professor, Okan University) — Principal investigator
First posted
Apr 17, 2024
Start date
Apr 2024 (estimated)
Primary completion
May 2024 (estimated)
Completion
Jun 2024 (estimated)
Last update
Apr 17, 2024

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.

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