ACE Personal Trainer Practice Exam

Which muscles are typically tight in posterior pelvic tilt?

1. Hip flexors

2. Hamstrings

3. Rectus abdominis

4. Both Rectus abdominis and Hamstrings

The correct answer is: Both Rectus abdominis and Hamstrings

In the context of posterior pelvic tilt, it is important to understand the role of the muscles involved. Posterior pelvic tilt occurs when the pelvis is tilted backward, which often results from increased activation or tightness of certain muscle groups. The hamstrings are located at the back of the thigh and play a significant role in pulling the pelvis down when they are tight, contributing to the posterior pelvic tilt. When the hamstrings are excessively tight, they tend to limit the pelvis's ability to maintain a neutral position, leading to an exaggerated tilt. The rectus abdominis, which is a major muscle of the core located in the front of the abdomen, also plays a role in this movement. When it is tight or overly engaged, it can pull the pelvis in a backward direction, reinforcing the posterior tilt. Therefore, both the rectus abdominis and the hamstrings can contribute to posterior pelvic tilt due to their tendency to become tight and their impact on the pelvic position. Recognizing the relationship between these muscles is crucial for understanding postural alignment and addressing potential movement deficiencies with clients.