What does the acronym "PR" stand for in training?

The acronym "PR" in training context stands for "Personal Record." This refers to an individual's best performance in a specific exercise or activity, indicating the highest achievement they've reached in terms of weight lifted, distance run, or any measurable aspect of their training. Recording personal records is crucial for monitoring progress and setting future training goals. It allows individuals to track improvements over time, serving as motivation and a benchmark for personal growth in fitness. Establishing new personal records can signify effective training protocols and adaptations over time in response to workouts.

The other terms like "Performance Review," "Physical Regulation," and "Progress Report" do have relevance in fitness and training discussions, yet they do not capture the essence of "PR" as specifically referring to an individual's personal accomplishments in their training journey.