Final answer:
The exercise sequence of a knee raise, a hamstring curl, and another knee raise targets the hamstring group in the posterior thigh, but the question does not provide enough context to give a specific name to this combination of movements.
Step-by-step explanation:
The exercise described in the question is focused on the posterior compartment of the thigh, particularly on movements involving the hamstring group. This group is responsible for moving the back of the lower legs up toward the buttocks, as when kneeling, moving the thigh down and back, and twisting the thigh.
The specific exercise mentioned, which combines a knee raise, a hamstring curl, and another knee raise, is a type of aerobic exercise or possibly a move from a step-aerobics or body-conditioning class. However, the question does not provide a specific name for this combination of movements, and without a more detailed context, it is not possible to identify a universally recognized name for the exercise. If it is a specific move from a particular fitness program or exercise routine, the name could vary based on that context.