A more pronounced-looking buttocks is often associated with genetics or regular gym training, but experts say it may actually be linked to a postural condition known as anterior pelvic tilt.
This condition occurs when the front of the pelvis tilts forward from its normal position, causing an exaggerated curve in the lower back. As a result, the stomach may appear more protruded while the buttocks look more prominent—often informally referred to as “duck butt”.
Specialists explain that the issue is not purely hereditary, but is commonly caused by weak core and glute muscles that are unable to properly stabilise the pelvis. Over time, this imbalance affects overall posture and body alignment.
Lifestyle habits such as prolonged sitting or repetitive movements like walking on tiptoes may also contribute, as they tighten the hip flexors and lower back muscles, pulling the pelvis further forward.
Research also suggests that anterior pelvic tilt is more frequently observed in children with autism spectrum disorder (ASD) or Attention Deficit Hyperactivity Disorder (ADHD), who may have reduced muscle strength and challenges with coordination and balance.
In the United States, it is estimated that around one in 31 children aged eight and above are diagnosed with autism, while ADHD affects approximately one in nine children aged between three and 17 who have received a diagnosis.
Studies have shown that children with autism may display a more forward-tilted pelvis during walking, along with reduced ankle strength and altered hip positioning. Similarly, boys with ADHD have been found to have a greater pelvic tilt angle compared to those without the condition.
These postural changes can also lead to secondary issues such as forward head posture and rounded shoulders, alongside pelvic misalignment. While not always harmful, the condition may contribute to back, hip and knee pain, as well as reduced balance and movement efficiency.
However, experts note that anterior pelvic tilt can often be improved through targeted exercise routines that stretch tight hip flexors while strengthening the glutes, hamstrings and core muscles, helping restore better pelvic alignment.
