What core strengthening activity involves a V sit with a torso twist and elevated feet?

The core strengthening activity that involves a V sit with a torso twist and elevated feet is known as the Russian Twist. This exercise requires you to sit in a V position, where your upper body leans back while your legs are elevated off the ground. The twisting motion engages the oblique muscles of the core as you rotate your torso from side to side, often while holding a weight or a medicine ball. This movement not only targets the abdominal muscles but also improves overall core stability and strength.

In contrast, other exercises listed do not incorporate the same elements. For instance, a Runner's Lunge focuses primarily on leg strength and flexibility rather than core engagement. The Wall Drill typically pertains to speed and agility, and while it may engage core muscles to some extent, it does not emphasize the seated twisting action. Navasana, or boat pose, is a yoga pose that does balance on the sit bones with lifted legs, but it does not involve the twisting motion that is characteristic of the Russian Twist.