Final answer:
A single kettlebell squat is an example of unilateral loading, where the weight is held on one side to engage the core and improve balance.
Step-by-step explanation:
Performing a squat with a single kettlebell held in a front racked position is an example of unilateral loading. This type of loading refers to exercising with weight on one side of the body, as opposed to bilateral loading, which involves weight that is evenly distributed on both sides. In the case of the kettlebell squat, having the weight on one side forces the body to engage core stabilizers and work harder to maintain balance, providing both a strength and balance challenge.