The average of three maximum force measurements was recorded. The participants held each contraction for 5 s. Trunk flexion and extension were performed while standing, with the pelvis stabilized,

and without upper extremity support. The attachment was placed two inches below the participant’s sternal notch for trunk flexion (Fig. 1) and between the scapulae for trunk extension (Fig. 2). Bilateral hip extension and abduction force was Gefitinib order collected while standing, with the hips in neutral position, and without upper extremity support. The attachment was placed two inches above the posterior joint line of the knee for hip extension and two inches above the lateral joint line of the knee for abduction. The bilateral hip external Compound C price rotation force was measured in sitting. The participant’s hips and knees were flexed at 90° without upper extremity

support. The attachment was placed two inches above the ankle joint. The isoinertial strength test was a timed sit-up test. The protocol for the sit-up test was developed by the American Alliance of Health, Physical Education, Recreation, and Dance (AAHPERD17). The objective of the test was to perform as many full sit-ups as possible within 1 min. The sit-up test was initiated in the hook-lying position, with arms held across chest, knees flexed at 90°, and feet secured. To complete a full sit-up, the participant’s scapulae touched the mat in the lying position and the elbows made contact with the knees in sitting. Following protocols established by McGill et al.,18 four core endurance tests were performed. The objective of the endurance tests was to hold a static position for as long as possible. The endurance tests were the trunk flexor test, trunk extensor test, and bilateral side bridge tests. The trunk flexor 3-mercaptopyruvate sulfurtransferase test began with the participant

in the sit-up position with their trunk supported at 60° of trunk flexion. Knees and hips were flexed at 90°, arms crossed over chest, and feet secured. The support of the trunk was then removed, and the participant held the position for as long as possible. The test was terminated when the participant was no longer able to hold the position. The trunk extensor test was performed with the participant lying prone on a treatment table. Their pelvis, hips, and knees were secured to the treatment table, while a chair at the same height as the surface of the table supported the trunk and upper extremities. The chair was removed, and the individual held a horizontal body position for as long as possible with arms crossed over chest. The test was discontinued when the participant fell below the horizontal position. The side bridge tests were performed in the side-lying position on a treatment table. The participant’s knees were extended with the top foot placed in front of the lower foot. The participant supported their weight only on their lower elbow and feet while lifting their hips off the mat.