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The Difference Between Runner and Bodybuilding Abs

by
author image Jody Braverman
Jody Braverman is a professional writer and editor based in Atlanta. She studied creative writing at the American University of Paris and received a Bachelor of Arts in English from the University of Maryland. She also received personal trainer certification from NASM and her 200-hour yoga teacher certification from YogaWorks.
The chiseled abs of a bodybuilder come from training and diet.
The chiseled abs of a bodybuilder come from training and diet. Photo Credit OlegUsmanov/iStock/Getty Images

Flat and lean versus thick and muscular: two very different physiques for two very different sports. Runners need lean, light bodies so they can be fast and go the distance. Bodybuilders pack on muscle and burn fat to reveal a chiseled physique. As a result, the abdominal muscles of runners and bodybuilders tend to be very distinct.

Everyone Has Abs, But They Look Different

Even if you don't exercise at all, you still have abdominal muscles. You need them to help you sit and stand, bend down to pick something up or turn to the side.

The more active you are, however, the stronger your abs need to be to support your body in your sport, whether it's playing tennis, hiking, running or pumping iron. The more force you put on your abdominal muscles, the bigger and stronger they will become.

Read more: 10 Most Effective Ab Workouts

Runners Tend to Be Lean with Less Developed Abs

Running, especially long distances, burns a lot of calories. Runners who pack in a lot of miles each week generally tend to be very lean, with long sinewy muscles. Runners typically want to stay light; they don't want to put on too much muscle because this makes their bodies heavier to carry over distances.

Although strong abdominal muscles are important during running to stabilize the hips and knees and support the spine, they do not need to be super strong, nor do they need to be big. For this reason, runners will primarily focus on functional ab exercises using their own body weight or light resistance, and do higher repetitions of exercises to increase their muscular endurance.

However, many runners don't do any ab exercises at all -- they just run.

Runner's abs tend to be smaller and less developed.
Runner's abs tend to be smaller and less developed. Photo Credit Eyecandy Images/Eyecandy Images/Getty Images

Bodybuilders Develop Their Abs

A bodybuilder's main goal is to increase the size of his muscles. Bodybuilders typically train their abs with much heavier weight and lower reps to induce hypertrophy, or muscle growth. The emphasis is on size, definition and strength.

During different phases of a bodybuilder's routine, however, the abs may be less noticeable. During the bulking phase, a bodybuilder is focused on lifting heavy and eating a lot to support muscle growth. He may also put on some fat during this time, which can hide his ab muscles.

Before a competition, a bodybuilder enters a cutting phase. He does more cardio at this point and reduces his calorie intake to lose fat and reveal the rippling abdominal muscles underneath.

Body Type Plays a Role

The differences in muscle size and appearance between runners and bodybuilders depend on training style and diet. They also depend on the body type you're born with. If you're an ectomorph, a person with a naturally thin and delicate build, even as a bodybuilder you may never be able to get big, thick abs. If you're a runner and a mesomorph, a person who puts on muscle easily and is still naturally lean, you may have bigger more defined abs than your ectomorph friend who's a bodybuilder.

Read more: 5-Day Bodybuilding Schedule for Men

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