for fewer than 10 reps, formula 1 returns a slightly higher estimated maximum. For example, if a person can lift 100 pounds on a given exercise for 10 reps, the estimated one rep max would be 133 pounds for both formulae. However, if the person were to complete only 6 reps, then formula 1 would estimate a one rep maximum of approximately 120 pounds, while formula 2 would return an estimate of approximately 116 pounds. These types of calculations may not always produce accurate results, but can be used as starting points. The weight can then be changed as needed to perform the number of reps called for by the training protocol. Several more complex formulae have been proposed which use different coefficients for different rep numbers and sometimes even for different exercises. Adams Landers Berger Wathen Mayhew et al. O'Conner et al. Baechle Brown Kemmler et al. Lombardi See also Weight training References Further reading Weight training