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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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Also, most one rep maximum calculators are designed for seasoned strength trainers, and those with little experience may find their actual one rep maximum is much lower because their nervous system cannot handle the stress of a high weight. It kind of feels that you’re doing any distinctive trick. Making a formula To create these formulas, researchers gather up a bunch of participants, measure some variables, and then crunches numbers to arrive at a formula.

Once they have df 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.

Maximum Load (1RM)

This page was last edited on 29 Decemberat The most accurate way to know your 1RM is to actually get under a barbell and test it. 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. Unfortunately it’ll be tricky to measure the bar speed yourself when lifting.


However, for fewer than 10 reps, formula 1 returns a slightly higher estimated maximum.

The essential guide to fitness: If you can’t find what you’re forule for, or you have an idea for a calculator that would be helpful to you, let us know. These types of calculations may not always produce accurate results, but can be used as starting points. Journal of Strength and Conditioning Research. Not finding what you’re looking for? Don’t worry about burning out on the way, you’ll actually be able to lift more this way.

This version of the one rep maximum calculation is often referred to as the Brzycki Formula after its creator, Matt Brzycki, [5] and can be written either in terms of integers or as a decimal approximation:.

As strength is the base of all athleticism, knowing that yours increases over time will keep you motivated and going in the direction. Don’t jump straight to your 1RM attempt but build up to it gradually. The submaximal estimation method is preferred as it is safer, quicker, and less unnerving for inexperienced exercisers; [2] however, bryzcki may underestimate the actual 1RM.

Estimation’s all well and good but what if you want to know what your True 1RM is?

Science supports this 7 and there’s even a 1RM formula that uses bar speed 8. The website loading pace is amazing.

One-repetition maximum

RM Calculator uses the seven best formulas for calculating your max reps Lombardi, Brzycki, Epley, Mayhew, O’Conner, Wathan, Lander rormule, you can choose one of them, or find an average for the most accurate result of possible max reps. For planning purposes, know that your result will normally fall within 5 kg, more or less, of your true 1RM 3 4.


The degree of accuracy can vary largely depending on the weight training experience and muscular composition of the athlete. These are the formulas I’ve found: The repetition maximum RM can be calculated firmule by testing highs, or indirectly using submaximal estimate. Then there’s really no substitute to growing a spine, getting under the bar, and pushing yourself to your limit.

Epley Formula (1 rep max)

By understanding the maximal potential of the muscle, it is possible to reach resistance overload by increasing the number of repetitions for an exercise. Aside from having a handy answer to the inevitable “so, how much do you bench?

Vol 13, Issue 3, Page formupe It is preferable to use submaximal estimate because it is safer, faster and less confusing for inexperienced athletes. Then they apply regression analysis to the gathered numbers. Finally, know the movement’s rules. Anything that the researchers believe can be useful for the final 1RM formula is tested.

As a rule of thumb, never bother for anything above ten repetitions 2.