Which exercise direction is NOT included in the multidirectional repetitive movements?

In the context of motion and exercise, multidirectional repetitive movements typically include actions that can be performed in various planes such as forward, backward, and side-to-side. These movements are crucial in therapies such as LSVT BIG, which focuses on improving movement amplitude and coordination in individuals with Parkinson's disease.

Diagonal movements are not typically classified within this framework of multidirectional repetitive movements. While diagonal movements can enhance coordination and functional mobility, the core focus of the exercise protocol is on movements that are more straightforward and defined within the primary directions: forward, backward, and side-to-side. These primary directions help establish a foundation for balance and stability before progressing to more complex movements like diagonal patterns.

Thus, diagonal is the movement direction that does not fit the standard categorization of multidirectional repetitive movements, making it the correct answer to the question.