The participant lies down with the hips and knees flexed to 90°, arms crossed over the chest at shoulder level, and feet in a fixed position. The test begins when the participant's trunk is moved into a supported sitting position with 60° flexion while maintaining this initial position. The trunk support is removed, and the participant is asked to maintain this position for as long as possible. The test ends when the 60° angle between the floor and the upper trunk changes, and the elapsed time is recorded in seconds.

The participant lies on their non-dominant side on a treatment table with their legs extended. The upper foot is placed in front of the lower foot for support. The upper arm is placed across the chest toward the opposite shoulder. The elbow of the lower arm is positioned in flexion and placed so that support can be obtained from the elbow and forearm. The participant is instructed to lift their hips off the ground to form a straight line with their entire body, using support from their elbows and feet. The test ends when the participant loses the test position, and the duration for which the position was maintained is recorded in seconds. The test is performed bilaterally.

This method, which describes the position of the navicular tubercle relative to the medial malleolus and the line of the first metatarsophalangeal joint, was first developed by McPoil and colleagues. The grading of pes planus is based on the degree to which the navicular tubercle deviates from the Feiss line and approaches the ground.

This is used to convert certain values that cannot be measured numerically into a numerical format. The two extremes of the parameter being assessed are labeled at either end of a 10-cm line, and participants are asked to indicate where their condition falls on this line by drawing a line, placing a dot, or making a mark. In our study, the intensity of pain experienced during menstruation (at rest, during activity, and while sleeping) will be defined as 0 = "no pain" and 10 = "severe pain."

This scale is a Likert-type measure consisting of 33 items. It consists of five subscales that examine the positive and negative aspects of menstruation: (a) Menstruation as a debilitating phenomenon (Items: 1-12); (b) Menstruation as a distressing phenomenon (Items: 13-18); c. Menstruation as a natural phenomenon (Items 19-22). d. Anticipating or sensing the onset of menstruation (Items 23-26). e. Denial of the effects of menstruation (Items 27-33)). Higher scores indicate a positive attitude toward menstruation.

The Multidimensional Fatigue Inventory-20 (MFI-20) is a self-report questionnaire consisting of 20 items developed to assess different dimensions of fatigue. The instrument comprises five subscales: General Fatigue, Physical Fatigue, Mental Fatigue, Reduced Motivation, and Reduced Activity, with each subscale containing four items. Each item is rated on a 5-point Likert scale ranging from 1 (strongly disagree) to 5 (strongly agree). Subscale scores are calculated by summing the scores of the four items within each subscale, resulting in a score range of 4 to 20 for each dimension. Higher scores indicate greater levels of fatigue or greater impairment in the respective dimension.

This test is a performance-based measure of functional mobility. Participants stand up from a standard chair without using the armrests. They then walk 3 meters as quickly as possible (without running), turn around, walk back to the chair, and sit down again. Participants stand up from a standard chair without using the armrests. They then walk 3 meters as quickly as possible (without running), turn around, walk back to the chair, and sit down again.