Plantar fascia stretch

Movement

What trials had people do

The authors of a randomised study of 101 people with chronic (long-lasting) plantar fasciitis described the stretch as a non-weight-bearing exercise⁵. Later trials describe the position and hold times their own participants used^1,2,3:

Who	Position	Holds
44 people with plantar fasciitis1	Seated, affected leg crossed over the other, toes bent back at their base with the opposite hand1	10 seconds, 10 times, three times a day, the first round before getting out of bed1
84 people with plantar fasciitis2	Seated, leg crossed, one hand around the heel, the other pulling the toes toward the shin until the sole felt tight2	30 seconds, three times2
50 people with plantar fasciitis3	Seated, foot crossed over the other thigh, one hand on the heel, the other pulling the toes toward the shin3	45 seconds, five times3
38 recreational athletes8	Standing facing a wall, toes and ball of the foot on the wall, heel on the floor8	Over a 7-week study8

In the athletes’ study, a participant who felt too little stretch standing could sit and pull the toes back by hand⁸. The authors of a 2026 cadaver study describe the stretch as bending the ankle and toes up while pressing with the fingers along the fascia¹⁰.

A systematic review (a set, checkable search of the research on a question) covered six stretching studies in people with plantar heel pain¹¹. Hold times ran from ten seconds to three minutes, and the positions used also varied¹¹. The review drew no clear conclusion about the most effective hold time or position¹¹.

Rolling the sole

Some studies had people roll the sole over an object instead^8,12. In the 7-week athletes’ study, the sole was rolled back and forth, from heel to ball of the foot, on a wooden cylinder⁸. It was also rolled in small circles on a foam roller ball, with as much pressure as tolerable⁸.

What it loads

The plantar fascia

The windlass mechanism was described by Hicks in 1954¹³. Bending the toes up pulls on the stiff plantar fascia, which draws the heel bone toward the toes and raises the arch¹³.

Studies have measured the fascia in these positions in several ways, and the sizes differ^4,14. Strain is stretch as a share of resting length, and dorsiflexion is pulling the foot and toes up toward the shin.

Study	Position	Change in the fascia
12 cadaver lower-leg specimens4	Ankle and toe joints bent up together4	Inner band stretched 14.91% above a reference position4
The same specimens4	Ankle alone, or toe joints alone4	9.31% with the ankle, 7.33% with the toes4
Six cadavers14	All toe joints extended14	Strain up 0.4%14
CT scans (pictures built from X-rays) of six healthy men15	Toe joints bent up, midfoot bent down15	Strain about 5% on the inner side, about 2% on the outer15
MRI (a scan that shows soft tissue) in living people16	Toe joints up 40 degrees, ankle pointed down 20 to 30 degrees16	Up to 4 mm (2.3%) longer16
The same imaging study16	Toward maximum dorsiflexion, once the slack was taken up16	Up to 9 mm (7.6%) longer16

In 12 dissected cadaver feet, bending the toe joints up while pressing on the fascia reliably produced measurable strain¹⁰. Bending the toes up alone did not consistently produce what the authors judged adequate strain¹⁰.

Two imaging studies measured thickness in different postures^15,16. On CT, moving from a neutral posture to one with the toe joints bent up and the midfoot bent down made the fascia of six healthy men longer, narrower and thinner¹⁵. On MRI, once the slack was taken up and the joints moved toward maximum dorsiflexion, the fascia lengthened with no measurable change in thickness¹⁶.

The Achilles tendon and the ankle

In eight cadaver lower limbs, bending the toes up tightened the fascia and increased how much a pull on the Achilles tendon strained it¹⁷. In 30 healthy participants, the fascia and Achilles tendon grew stiffer as the ankle was passively bent up, with the knee straight or bent¹⁸.

The muscles under the fascia

The flexor digitorum brevis, a short toe-flexing muscle in the sole, lies immediately beneath the central band of the fascia^19,20. In 51 healthy adults, it was stiffer with the toes extended 45 degrees than at 0 or 15 degrees²⁰. The authors could not say whether this came from muscle activity or from the muscle being lengthened²⁰.

The nerves of the sole

The nerve measurements here come from cadavers^14,21. The tibial nerve, the main nerve at the back of the lower leg, typically divides into the medial (inner) and lateral (outer) plantar nerves²². In six cadavers, extending all the toe joints increased strain in each¹⁴:

Position, in six cadavers	Tibial nerve	Lateral plantar nerve	Medial plantar nerve
Toe joints extended14	0.4%14	0.8%14	2.0%14
Toe joints extended, ankle bent up and outward14	1.1%14	2.2%14	3.3%14

In the second position, fascia strain rose 1.2%¹⁴. In a study of ten cadavers, plantar nerve strain during toe extension showed a trend to vary with ankle position²¹.

How the body adapts

Right after one session

One study of 14 healthy participants used shear wave elastography, an ultrasound method that estimates how stiff a tissue is⁹. Elasticity readings of the plantar fascia were higher immediately after the fascia stretch and after an Achilles tendon stretch⁹. Readings did not differ between sustained and intermittent fascia stretching, or between fascia and Achilles stretching done in the same pattern⁹.

After rolling the sole

Several rolling studies used the sit-and-reach test, a flexibility test of how far a person can reach toward their toes while seated^12,23. Their results are mixed^12,24:

• In a pilot (small first) randomised trial of 24 healthy volunteers, one tennis-ball rolling session was followed by a larger score than no intervention¹².
• In 168 healthy adults measured before and after one 120-second bout, sit-and-reach distance rose by 10.1%²³.
• In 36 participants with no control group, scores were higher immediately, 30 minutes and 60 minutes after rolling²⁵. The subgroup that was already flexible showed no significant change²⁵.
• In 15 college students, distance did not differ significantly among rolling a ball under the foot, foam-rolling the hamstrings, and doing both²⁴.
• In 94 volunteers, 10 minutes of self-massage on any of five regions from sole to scalp improved hamstring flexibility and ankle dorsiflexion range²⁶. The largest effects came from two regions on the back of the leg, not the sole²⁶.
• In 38 recreational athletes, 7 weeks of stretching and rolling the sole were compared with a control group⁸. The authors concluded there were no or minor remote effects at the ankle⁸.

In trials of people with heel pain

Against an Achilles tendon stretch

One randomised study compared the stretch with an Achilles tendon stretch in 101 people with plantar fasciitis lasting at least ten months⁵. Both groups also received soft insoles, a three-week course of the anti-inflammatory drug celecoxib and an educational video⁵. At eight weeks, the fascia-stretching group had better scores for worst pain and first-step morning pain⁵.

At eight weeks, everyone was taught the fascia stretch⁶. Two years on, 66 of 82 patients returned complete questionnaires⁶. The two original groups no longer differed significantly in worst pain or first-step morning pain⁶. A systematic review noted that this follow-up had no control group, which limited any conclusion about stretching for longer¹¹.

Against or alongside shockwave therapy

Two trials involved shockwave therapy, pulses of sound energy aimed at a painful area through the skin^27,28. Both found a difference at two and four months that was not significant at the last follow-up^27,28:

• A randomised trial included 102 people whose plantar fasciopathy (heel pain linked to the plantar fascia) had lasted six weeks at most²⁷. At two months, the eight-week stretching group had greater change in pain scores than the shockwave group²⁷. The differences persisted at four months, and at fifteen months no significant difference was measured²⁷.
• A trial included 152 people whose plantar fasciopathy had lasted at least twelve months²⁸. The group assigned shockwave plus eight weeks of stretching had greater change in pain scores at two and four months than shockwave alone²⁸. The difference was no longer significant at twenty-four months²⁸.

Against strengthening and taping

• In a randomised trial of 48 patients, all given shoe inserts, one group did high-load heel raises and one did daily fascia stretching²⁹. At 3 months, the heel-raise group had the better self-reported result²⁹. The groups did not differ at 1, 6 or 12 months²⁹.
• In a randomised trial of 84 people, a strengthening group and a stretching group both changed significantly in pain over time². No measure differed significantly between the groups².
• In a randomised trial of 41 people, the stretching group had lower pain scores after one week than a no-intervention group³⁰. Its scores were higher than a heel-taping group’s³⁰. Function did not differ significantly among groups³⁰.

What reviews found

A systematic review of six studies, in 365 people, found too few to judge whether stretching works better than control or other approaches¹¹. It found some evidence that fascia stretching reduced some aspects of pain more than calf stretching alone, in the short term¹¹. A meta-analysis of eight randomised trials found moderate-quality evidence that the fascia stretch reduced pain more than calf stretching³¹.

A 2026 meta-analysis of 12 randomised trials pooled plantar fascia-specific, calf and Achilles stretching⁷. It found no statistically significant difference in pain or foot function between stretching and its comparators⁷. Certainty was very low across the pooled outcomes⁷. It found the evidence on fascia thickness uncertain and the range-of-motion findings inconsistent⁷.

Progressive overload

A 2026 position stand on resistance training describes progressive overload as the need to increase the stimulus placed on the muscle throughout a training programme³². In two studies, the stretch had no planned progression over the weeks^2,8.

What trials did over the weeks

• In a randomised trial of 84 people with plantar fasciitis, the table of programmes listed no progression for the seated stretch². It was three 30-second holds with 10 seconds of rest². The strengthening exercises it was compared with progressed by levels, such as 1 kg more for toe curls or a harder band². The stretching group did its home exercises three times a day for 4 weeks, then every day for 8 more weeks².
• In a 7-week study of 38 recreational athletes, the sole stretch was held for 5 minutes at the greatest tolerable intensity⁸. It was one of three 5-minute exercises, done three times a week under supervision⁸. Participants were asked to do the exercises the same way for the whole period⁸.
• In a trial of 100 people with plantar fasciitis, one randomly assigned group stretched the fascia three times a day for 16 weeks³³. The other had a single injection of a corticosteroid, a drug that copies a type of hormone the body makes³³. Both groups also had anti-inflammatory drugs, contrast baths (alternating warm and cold water soaks) and insoles³³. Pain and function scores favoured the injection at 2 and 6 weeks, and the stretching group at 12 and 16 weeks³³.

How much stretching, across studies

A systematic review of six stretching studies in people with plantar heel pain compared how much stretching each asked for¹¹. Repetitions ranged from 6 to 210 a week, the highest in a trial of plantar fascia stretches¹¹. The study with the fewest found a statistically significant difference, and the one with the most also found some improvement in pain¹¹. The study with the fewest, two sessions in a week, was the only one to show a significant benefit over a control¹¹. It paired a fascia stretch with a calf stretch¹¹.

The reviewers found no conclusive evidence on the best number of repetitions or frequency¹¹. They concluded that the main pain-relieving benefits came in the first two weeks to four months¹¹. The authors of the 2026 meta-analysis of 12 randomised trials said how the stretches compared stayed uncertain, partly because the trials’ protocols varied⁷. They called for trials with standardised stretching protocols and longer follow-up⁷.

Connections

In cadaver specimens, bending the ankle and toe joints up stretched the plantar fascia⁴. A cadaver dissection study found the fascia firmly joined to the muscles of the sole beneath it³⁴. In six cadavers, toe extension also strained the tibial nerve and both plantar nerves¹⁴.

In an MRI study of 40 people, passively bending the ankle up lengthened both the Achilles tendon and the plantar fascia³⁵. A systematic review found some evidence that the fascia stretch reduced some aspects of pain more than calf stretching alone, in the short term¹¹. A systematic review covered six stretching studies in people with plantar heel pain¹¹.

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Every source the library cites

Changes

• October 23, 2026 Added a Progressive overload section.
• October 5, 2026 First published.