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Powerlifting

Understanding Powerlifting Weight Classes

Why Developing Muscle Mass Is Hugely Important For Improving Powerlifting Performance

Chris Stone, PT

Written by Chris Stone, PT

Last Updated onJuly 3, 2020

Powerlifting Weight Classes

Powerlifting Weight Classes

There are two main purposes of nutrition in powerlifting. One is to optimize athletic abilities and the other is to manage your weight.

A combination of good nutrition and well-structured training will lead to an increase in muscle mass and ensure you are in the best condition possible.

Additionally, keeping a tight reign on your nutrition is crucial for ensuring that you attain your weight class and perform to the best of your ability in competition.

This article will begin by highlighting the different powerlifting weight classes before moving on to consider the implications of proper nutrition and weight management on powerlifting performance.

Powerlifting Weight Classes

If you were unaware, powerlifting is a sport that categorizes competitors by weight class.

As the name suggests, how much you weigh determines the category you fall into. It is not possible to compete in a lighter or heavier weight class.

The below table highlights the different weight classes for powerlifting. Be aware that the IPF weight classes differ from all other federations.

International Powerlifting FederationOther Federations
MaleFemaleMaleFemale
59 kg / 130 lbs47 kg / 104 lbs56 kg / 123 lbs44 kg / 97 lbs
66 kg / 145 lbs52 kg / 115 lbs60 kg / 132 lbs48 kg / 106 lbs
74 kg / 163 lbs57 kg / 127 lbs67.5 kg / 148 lbs52 kg / 115 lbs
83 kg / 183 lbs63 kg / 139 lbs75 kg / 165 lbs56 kg / 123 lbs
93 kg / 205 lbs72 kg / 159 lbs82.5 kg / 181 lbs60 kg / 132 lbs
105 kg / 231 lbs84 kg / 185 lbs90 kg / 198 lbs67.5 kg / 148 lbs
120 kg / 265 lbs> 84 kg / > 185 lbs100kg / 220 lbs75 kg / 165 lbs
> 120 kg / > 265 lbs–110 kg / 242 lbs82.5 kg / 181 lbs
––125 kg / 275 lbs90 kg / 198 lbs
––140 kg / 308 lbs> 90 kg / > 198 lbs
––> 140 kg / > 308 lbs–

Selecting Your Weight Class

Larry Wheels Deadlifting
Larry Wheels

When it comes to selecting your weight class, there is only really one main consideration for you to make.

The weight class you compete in should be the class that allows you to carry as much muscle mass as possible.

Ideally, you should be towards the top end of your weight class too as being at the lighter end of the class may be disadvantageous in terms of strength.

It is not uncommon for powerlifters to carry an excessive amount of body fat. However, powerlifters should maintain a fairly lean physique in order to maximize performance.

Adding Fat Does Not Impact Leverage

In an attempt to reach a certain weight class, some powerlifters consume a diet that causes them to put on a great amount of body fat.

Some believe that the bigger you are, the better you will perform in competition.

While body fat is needed to drive many bodily functions, it does not contract or contribute in any way to force development (1). Therefore, fat cannot provide you with any additional leverage.

That being said, some overweight or obese powerlifters may find that their additional body fat does have a positive impact on performance.

Because of their size, it is possible that the range of motion will become more restricted. When it comes to powerlifting, reducing the range of motion may allow you to lift heavier loads.

However, generally speaking, being extremely overweight and carrying a lot of body fat will not help you generate any additional leverage or significantly boost powerlifting performance.

Why Putting On Weight May Boost Powerlifting Performance

While being body fat does not necessarily improve leverage, it may still have an impact on your overall performance.

Many powerlifters have felt stronger when at a greater weight. This is potentially more to do with nutrition and the “overfed” state.

Consuming an excessive amount of calories over a prolonged period of time may lead to an increase in glycogen levels (2 ).

Glycogen is the stored form of glucose which is the substance that the body uses for energy.

It is possible that this increase in energy reserves is responsible for an improved powerlifting performance.

In addition, being in an overfed state in combination with strength training will lead to an increase in muscle size (3).

Consequently, the muscles will be capable of generating more power thus boosting performance further.

Weight Class Case Studies

To highlight the importance of maximizing muscle development, this section will present three case studies.

Case One – Overweight vs Lean

PowerlifterHeightWeightBody Fat %Lean Body Mass
A5’ 6”181 lbs20%145 lbs
B5’ 6”181 lbs8%167 lbs

This case study serves to emphasize the importance of maintaining a relatively lean physique regardless of your weight class.

Based on appearance, you may assume that athlete A will be capable of lifting heavier weight. However, athlete B will likely outperform athlete A.

By doing some quick calculations based on the athlete’s weight and body fat percentage, it is possible to evaluate their lean body mass. This is the amount of fat-free mass a person carries.

As highlighted in the table, athlete B has a greater amount of lean body mass than athlete A. As a result, athlete A will be able to generate more power and lift greater loads than athlete B.

Case Two – Tall vs Short

PowerlifterHeightWeightBody Fat %Lean Body Mass
A6’ 10”181 lbs8%167 lbs
B5’ 6”181 lbs8%167 lbs

This second case study highlights how important it is to carry as much muscle as you possibly can into a competition.

Powerlifter Amanda Lawrence
Powerlifter Amanda Lawrence


While the previous case study was straightforward, case two is a little more challenging.

On the face of things, they both weigh the same and have the same body fat percentage and lean body mass. Consequently, you may conclude that they will have similar performance.

However, lean body mass does not simply refer to muscles only. It also takes into account bones, organs, soft tissues, and blood, amongst other things.

Therefore, because athlete A is taller, other structures, such as the skeleton, will contribute more significantly to their total lean body mass.

With athlete B, however, because their skeleton weighs less, it can be assumed that more of their lean body mass comes from muscle.

By carrying a greater amount of muscle, it is likely that athlete B will outperform athlete A.

Case Three – Skinny vs Stocky

PowerlifterHeightWeightBody Fat %Lean Body Mass
A5’ 6”165 lbs8%152 lbs
B5’ 6”181 lbs8%167 lbs

This final case study is more theoretical as these athletes would compete in different weight classes. However, once again, it underlines how crucial it is to develop muscle mass.

Based on their physical attributes and the weight classes that the athletes fall in, athlete B is likely to be more competitive than athlete A.

Athlete B is likely to have the most muscle in his weight class which evidently improves their chances of being competitive.

Although still muscular, athlete A is not likely to be the most muscular individual in their class which puts them at a disadvantage.

Read also: Choosing A Powerlifting Federation

Final Word

It must be noted that there are a number of factors that influence lifting ability. That said, maximizing the amount of muscle in relation to your weight class is undoubtedly one of the most substantial factors.

Ultimately, if you want to maximize your performance, the goal must be to become the most muscular person in your weight class.

References:

1 -Coelho, Marisa; Oliveira, Teresa; Fernandes, Ruben (2013-04-20). “Biochemistry of adipose tissue: an endocrine organ”. Archives of Medical Science : AMS. 9 (2): 191–200. doi:10.5114/aoms.2013.33181. ISSN 1734-1922. PMC 3648822. PMID 23671428.

2 – Murray, Bob; Rosenbloom, Christine (2018-4). “Fundamentals of glycogen metabolism for coaches and athletes”. Nutrition Reviews. 76 (4): 243–259. doi:10.1093/nutrit/nuy001. ISSN 0029-6643. PMC 6019055. PMID 29444266.

3 – Coelho, Marisa; Oliveira, Teresa; Fernandes, Ruben (2013-04-20). “Biochemistry of adipose tissue: an endocrine organ”. Archives of Medical Science : AMS. 9 (2): 191–200. doi:10.5114/aoms.2013.33181. ISSN 1734-1922. PMC 3648822. PMID 23671428.

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Chris Stone, PT

Chris Stone, PT

Chris Stone is a Personal Trainer and Fitness Writer who lives in Edinburgh, Scotland. After studying Sport Science at University, Chris established his own Personal Training business where he works with individuals aspiring to improve their mental health through physical activity. In addition, Chris also enjoys writing on a range of health & fitness topics including strength training, plyometrics, and speed & agility training.

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