What should instructors be cautious about when the floor surface is nonresistant?

When the floor surface is nonresistant, instructors should be particularly cautious about avoiding high impact movements. Nonresistant surfaces, such as those that are too soft or slippery, can increase the risk of slips, falls, and injuries when performing high impact exercises. Such movements place additional stress on the joints and can lead to instability, especially in environments that do not provide adequate support or traction.

Instructing participants to avoid high impact activities ensures that safety is prioritized, as lower impact exercises can still provide effective workouts without elevating the risk associated with an unsuitable floor surface. This approach helps to maintain workout effectiveness while minimizing injury potential, which is essential for a safe and enjoyable group exercise experience.

Focusing on maintaining a high tempo, increasing speed of movements, or introducing more workout variations could inadvertently lead to situations where participants are pushed to perform movements that may not be safe given the floor conditions. Therefore, emphasizing caution with impact levels is the most prudent choice for instructors in this scenario.