What is the primary objective of the round back variant in knee stretches?

The primary objective of the round back variant in knee stretches is to enhance flexibility. This variation allows the spine to move into flexion, which encourages the stretching of the back muscles and improves the overall flexibility of the spine and surrounding musculature. By performing this exercise, practitioners can open up the thoracic and lumbar regions, making it beneficial for increasing range of motion.

While stability, strength, and posture can also be elements addressed in Pilates exercises, the round back variant specifically emphasizes the flexion and lengthening of the back, thus targeting flexibility as its key outcome. This is especially useful for those working on spinal mobility and countering the effects of prolonged sitting or postural imbalances.