ACE Personal Trainer Practice Exam 2025 - Free Personal Trainer Practice Questions and Study Guide

The primary purpose of the Thomas Test is to examine tightness of the hip flexor muscles. This assessment is specifically designed to determine if there is any tightness or dysfunction in the hip flexors, particularly the iliopsoas group. During the test, an individual typically lies on their back and pulls one knee toward their chest, which allows the examiner to observe the opposite leg. If the opposite leg does not lie flat against the examination surface and instead rises off the table, it indicates tightness in the hip flexors, revealing potential issues related to flexibility and muscle function in that area.

The Thomas Test is particularly useful in rehabilitation and training settings, as tight hip flexors can contribute to poor posture, lower back pain, and limitations in athletic performance. Thus, identifying and addressing tightness in this muscle group can help inform appropriate stretching and strengthening exercises tailored to an individual’s needs.