Which of the following is NOT an exercise in the front rowing preps?

The option identified as not being an exercise in the front rowing preps is indeed correct. In the context of Stott Pilates, the front rowing preps consist of exercises designed to enhance the strength and coordination of the upper body, specifically targeting the muscles in the shoulders, arms, and upper back.

The exercises included in this category typically involve movement patterns that are fundamental to developing control and precision, such as 'Straight forward', 'Second position', and 'Offering'. Each of these exercises places emphasis on different aspects of upper body engagement while seated on the reformer.

In contrast, 'Round back' refers to an exercise that involves a flexion of the spine, emphasizing core engagement through a round position of the back rather than targeting the rowing motion. This movement diverges from the objectives of the front rowing preps, which are centered around extension and alignment in the upper body. Therefore, recognizing the specific focus and goals of each exercise within the Stott Pilates framework clarifies why 'Round back' does not belong to the front rowing preps.