Insoles Adapted in Flip-flop Sandals in People With Heel Pain

Inclusion Criteria: * Individuals of both sexes, aged 18 to 65 years; * Persistent heel pain for at least three months based on self-reported criteria: heel pain accompanying the first steps in the morning, after a period of inactivity, and/or during prolonged weight-bearing; * Pain intensity between 3 and 8 points, according to the Numerical Rating Scale (NRS) \[22\]; * Individuals who can wear flip-flop sandals for at least four hours per day for 12 weeks. Exclusion Criteria: * Clinical diagnosis of neuropathic pain or neurodegenerative disorders, persistent heel pain due to rheumatic conditions, and previous ankle and foot surgeries; * Physical therapy treatment in the last three months; * Corticosteroid injection into feet in the last six months; * inability to answer study-related questionnaires; * Individuals scheduled to travel in the next six months.