What does the "two-hour pain rule" indicate regarding exercise intensity?

The "two-hour pain rule" emphasizes the relationship between exercise intensity and the resulting pain experienced by participants in an aquatic exercise program. Specifically, it indicates that if joint pain persists for two or more hours after completing an exercise session, it likely signifies that the intensity of the class was too high for that individual. This guideline serves to help instructors gauge whether the level of difficulty is appropriate for participants with arthritis or related conditions, allowing them to adjust the exercise regimen accordingly to avoid exacerbating pain or discomfort.

This rule highlights the importance of monitoring symptoms in response to physical activity, reinforcing the understanding that pain is a crucial feedback mechanism. Effective exercise should ideally lead to manageable levels of discomfort, rather than prolonged pain that lasts well beyond the exercise session. This understanding is vital for ensuring a safe and supportive environment for participants, particularly those with arthritis who may be more sensitive to intensity levels in their workouts.