1RM stands for One Repetition Maximum. It is the maximum amount of weight that one can lift for a given exercise. Using the one rep maximum, you can determine your max strength for your muscles based upon exercises being performed.
1RM changes from time to time depending on how you progress according to your fitness goals. With the data that you record from your workouts using JEFIT, the application will generate a one repetition max as per exercise in a muscle group.
Want to find out how strong you really are or the amount of weight that you can lift for one repetition?