Enter the weight lifted for 10 reps (lbs) and the number of reps performed in the exercise into the Calculator. The calculator will evaluate the 1RM from Brzycki Equation.
1RM from Brzycki Equation Formula
1RM = w / [(1.0278)-(.0278*r)]
Variables:
- 1RM is the 1RM from Brzycki Equation (lbs)
- w is the weight lifted for 10 reps (lbs)
- r is the number of reps performed in the exercise
How to Calculate 1RM from Brzycki Equation?
The following steps outline how to calculate the 1RM from Brzycki Equation.
- First, determine the weight lifted for 10 reps (lbs).
- Next, determine the number of reps performed in the exercise.
- Next, gather the formula from above = 1RM = w / [(1.0278)-(.0278*r)].
- Finally, calculate the 1RM from Brzycki Equation.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
weight lifted for 10 reps (lbs) = 300
number of reps performed in the exercise = 15
Frequently Asked Questions
What is 1RM and why is it important?
1RM stands for one-repetition maximum, which is the maximum amount of weight one can lift in a single repetition for a given exercise. It’s important because it’s a standard measure of the maximum strength of an individual and is used to guide the intensity of weight training programs.
How often should I test my 1RM?
Testing your 1RM too frequently can be taxing on your body and may hinder your progress due to recovery needs. It’s generally recommended to test your 1RM every 3-6 months, depending on your training program and goals.
Can I use the Brzycki Equation for any exercise?
While the Brzycki Equation can be applied to most weightlifting exercises, it’s most accurate for compound exercises like the squat, bench press, and deadlift. For isolation exercises, the equation may not provide as accurate results due to the involvement of fewer muscle groups.
Is it safe to calculate and attempt my 1RM?
Calculating your 1RM using equations like the Brzycki formula can provide an estimate without physically lifting the maximum weight, which is safer. However, if you choose to physically attempt your 1RM, it’s crucial to do so with proper form, adequate warm-up, and preferably under the supervision of a trained professional to minimize the risk of injury.