What does the term "1RM" stand for in weight training?

The term "1RM" stands for "one rep max," which refers to the maximum amount of weight that a person can lift for one complete repetition of a given exercise. This measurement is crucial in weight training as it helps to establish an individual's strength level in a specific lift. Knowing one's 1RM can assist in designing an effective training program, as it provides a benchmark against which progress can be measured. It allows athletes to determine their training loads for various rep ranges, such as when aiming for hypertrophy, strength, or endurance.

In weight training contexts, understanding and calculating the 1RM can guide athletes in appropriately scaling their workouts to achieve their specific training goals while minimizing the risk of injury.