In addition to trunk rotation, the obliques are also responsible for which trunk movement?

The obliques are an essential muscle group located on the sides of the abdomen, and they play a significant role in various trunk movements. In addition to facilitating trunk rotation, which is critical for actions such as twisting and turning, the obliques are also heavily involved in lateral flexion. This movement occurs when the trunk bends sideways, allowing for more agile body movements, such as reaching down to the side or performing a side bend.

Lateral flexion engages the internal and external obliques while stabilizing the spine. This functionality underscores the importance of the obliques in maintaining balance and mobility during dynamic physical activities.

Although the other movements listed—extension, flexion, and hyperextension—are important for overall trunk mechanics, they predominantly involve different muscle groups such as the erector spinae for extension and flexion. Hence, lateral flexion distinctly highlights the role of the obliques in enhancing the trunk's movement capabilities.