In Pilates, what is the primary function of the ISS during exercises?

The primary function of the internal and external oblique muscles, collectively known as the intercostal and abdominal stabilizers, during Pilates exercises is to facilitate trunk stabilization. This stabilization is essential for maintaining proper posture, balance, and alignment while performing movements that often engage multiple muscle groups. In Pilates, core strength and stability are emphasized, as they form the foundation for movement efficiency and technique.

When trunk stabilization is adequately supported, it allows for controlled and effective execution of exercises while reducing the risk of injury. Additionally, a stable core improves the overall effectiveness of workouts by enhancing the ability to engage in more complex movements without compromising form.

The other options, such as enhancing upper body strength or improving lower body coordination, may involve secondary benefits of Pilates practice, but they do not capture the primary role of the internal and external obliques in maintaining a stable trunk during various Pilates movements. Flexibility is also an important aspect of Pilates, but it is not the main focus of this muscle group's function.