Eccentric Isometrics for Mobility, Strength, & Hypertrophy

Eccentric Isometrics for Mobility, Strength, & Hypertrophy

Eccentric Isometrics might be the best technique you haven’t heard of in the strength & conditioning world…and may also have a great role for rehab as well. Learn how they can be used to improve your movement, strength, and hypertrophy. 

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Almost daily I am asked what training tool or technique I have recently atarted employing and am excited about is. And without a doubt, right now that technique is ECCENTRIC ISOMETRICS!

I learned of these through research completed by PhD / Trainer / Strength coach Joel Seedman of Advanced Human Performance and immediately began implementing them into my programming – and knew right away that eccentric isometrics were an awesome training tool.
Side Note: Joel gave a great talk on eccentric isometrics as part of the Global Performance Summit, a free online summit with some of the best fitness coaches in the world that I co-hosted. Sign up for free at


What are Eccentric Isometrics?

Eccentric Isometrics are a lifting technique involving a slow negative portion of a lift, followed by an isometric hold in a stretched position, and then finished with a fast concentric movement.

Typically I perform a 7-count negative with a 5-count pause in the stretched position but these numbers can vary.

For reps, I tend to go much lower than usual, as the tempo is so slow. I usually perform 2-4 reps and 3-8 sets.

Obviously, due to the slow tempo, loading will have to start lower but can be aggressively increased. Dr. Seedman suggests starting at around 50% of 1RM and progressing as high as 90%!

For exercise selection, almost anything that can be safely loaded that you can perform with good technique is fair game. I’ve used it with multiple squat variations, Romanian deadlifts, pullups, rows, weighted-pushups, etc.


Benefits of Eccentric Isometrics

The biggest benefit I’ve found is in the quick correction of movement patterns. The slow eccentric portion is performed with the athlete focusing intensely on proper movement pattern. For example, the athlete who is shooting their knees forward while squatting will really focus on pushing their hips back to better load the glutes. The isometric hold at the bottom also really helps athletes “own” those difficult positions…especially athletes that for instance lose neutral spine positioning in the bottom of a squat.

The focus on proper movement patterns plus the huge motor unit recruitment during eccentric isometrics also mean it is a great tool for strength and hypertrophy, as well as it creating a great post activation potentiation response per Dr. Seedman’s research.

Finally, eccentric isometrics tend to be very forgiving on my muscles and joints. As I am heavily Olympic lifting based in my training, I take a lot of very fast impact loads. Eccentric isometrics are a nice break from the constant pounding and leave me feeling less achy after a training session.


I can’t speak highly enough about this great technique and I’d highly encourage you to listen to my talk with Dr. Joel Seedman on eccentric isometrics during the Global Performance Summit!


Global Performance Summit

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