The most popular (and proven accurate) one is the Brzycki formula from Matt Brzycki: Say you can lift 10 kg for 30 reps – with Brzycki’s formula your 1RM . #1 equipos de corte por arco de plasma on 19 October Brzycki: 1RM = W x (36 / (37 – R)); Wathan: 1RM = ( x W) / ( + ( x e- x R)); Lander: 1RM = ( x W) / ( – x R). Some other common formulas for calculating Maximum Load (1RM). Brzycki’s equation (). 1RM = Weight ÷ ( – ( × number of repetitions)).

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For planning purposes, know that your result will normally fall within 5 kg, more or less, of your true 1RM 3 4. Prediction of 1 repetition maximum in high-school power lifters. Several more complex formulae have been proposed which use different coefficients for different rep numbers and sometimes even for different exercises.

There are many different formulas to estimate your 1RM, all with slightly different calculations. By using this site, you agree to the Terms of Use and Privacy Policy. As a rule of thumb, never bother for anything above ten repetitions 2. It is not to be confused with RM1. Then they apply regression analysis to the gathered numbers. Obviously this will tax your body harder than regular training, so recovery will be longer.

It is preferable to use submaximal estimate because it is safer, faster and less confusing for inexperienced athletes. The most popular and proven accurate 1 one is the Brzycki formula from Matt Brzycki:. Just rest plenty in between lifts once it’s getting heavy. The repetition maximum RM can be calculated directly by testing highs, or indirectly using submaximal estimate.


Personally I haven’t tested at all for eight months now, as of this writing. The weight can then be changed as needed to perform the number of reps called for by the training protocol. The measuring can vary a bit between studies but usually participants at least have their different RMs 10RM, 7RM, etc tested.

Finally, know the movement’s rules. These types of calculations may not always produce accurate results, but can be used as starting points. This shows relations between the data, like “a higher 5RM seems to be related to a higher 1RM” or “people with shorter arms seem to be stronger in the bench”. RM Calculator uses the seven best formulas for calculating your max reps Lombardi, Brzycki, Epley, Mayhew, O’Conner, Wathan, Landeryou can choose one of them, or find an average for the most accurate result of possible max reps.

Don’t jump straight to your 1RM attempt but build up to it gradually. Formula 1 Epley and formula 2 Brzycki return identical results for 10 repetitions.

Epley Formula (1 rep max)

The most accurate way to know your 1RM is to actually get under a barbell and test it. Choose weight units and enter the following: Determining the 1 rep max can be done directly through trial and error and simply requires foemule exerciser to complete one full repetition with the maximum weight. The simplest chronometer you’ll ever see!

One repetition maximum can be used to determine the maximum strength of a person and is the method to determine the winner in sports events like powerlifting.

Instead you can use this calculator I’ve put together to estimate your 1RM: By understanding the maximal potential of the muscle, it is possible to reach resistance overload by increasing the number of repetitions for an exercise. This page was last edited on 29 Decemberat Sfit — Easy Workout, Bodybuild, Exercise at home.


Especially for the bench press where you can’t bail as easily as with the squat or overhead press. Once they have a formula, the researchers can then be test it on the same group of people or, in the case of one study 6another group, to check how accurate the formula is. These are the formulas I’ve found: This will both warm yourself up and help your body prepare for the weight. Gormule participants in these studies have been men, for whatever reason, but one separate study showed that the resulting formulas seem to hold true even for women 9.

The degree of accuracy can vary largely depending on the weight training experience and muscular rormule of the athlete. Science supports this 7 and there’s even a 1RM formula that uses bar speed 8.

Epley Formula (1 rep max)

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One-repetition maximum one rep maximum or 1RM in weight training is the maximum amount of weight that a person can possibly lift for one repetition. Journal of Strength and Conditioning Research.