Concentric v Eccentric revisited

Discuss all things related to the StrengthErg, Concept2's newest product.
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Dave Neve
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Posts: 47
Joined: August 29th, 2024, 5:07 pm

Concentric v Eccentric revisited

Post by Dave Neve » January 17th, 2025, 6:18 pm

Hello

Forgive me if I'm wrong, but I don't think one particular aspect of concentric and eccentric movements were mentioned previously.

Let's take the bench press as an example.

When I lower the bar down to my chest, the eccentric phase, it's not just the fact that I'm still pushing against the bar to stop it from coming down too hard on my chest that is beneficial.

The eccentric phase also allows you to tense the muscles that are about to push the bar back up again (the concentric phase). It's like you are tightening elastic bands (your muscles), in order for them to spring into action at the required moment.

Imagine for the sake of argument if a 150 kg bar/weights weighed nothing on the way down for a moment but once on your chest, it suddenly weights 150 kg again. You'd have a job pushing it back up as your body would not have been able to produce the necessary tension on the way down.

What I'm saying is that I think you can produce a lot more concentric force on a bench press movement with weights/machines that produce eccentric load, which is not the case with the StrengthErg.

Hope this is clear. What do you think?
DOB: 08/12/1958
Weight: Around 87 kg
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Best distance ever: 7601m in 30 min, 10,000 m in 42m15s
Ex-squash player and regular cyclist on all terrain bike

Sakly
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Joined: January 13th, 2022, 10:49 am

Re: Concentric v Eccentric revisited

Post by Sakly » January 17th, 2025, 6:55 pm

Your scenarios are not comparable, as the strength erg does not apply 150kg at the start of the movement.
These are two completely different force curves in the concentric and both have their specific stimulus to the muscles.
Male - '80 - 82kg - 177cm - Start rowErg Jan 2022
1': 358m
4': 1217m
30'r20: 8068m
30': 8,283m
60': 16,222m
100m: 0:15.9
500m: 1:26.0
1k: 3:07.8
2k: 6:37.1
5k: 17:26.2
6k: 21:03.5
10k: 36:01.5
HM: 1:18:40.1
FM: 2:52:32.6
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Disabled Veteran.
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Joined: February 5th, 2025, 7:26 pm

Re: Concentric v Eccentric revisited

Post by Disabled Veteran. » February 5th, 2025, 7:58 pm

I have seen a lot of opinions on the StrengthErg.

I will give a few ways that this will help some not all. I am a disabled Veteran. I broke both ankles and had bones removed
Now you can not compare disability to another disability.
I need something like the StrengthErg for my legs so I can get some leg press. Plus chest and tri work out. I get cronic pain and at anytime that can cause me to lose a bar bell/dumb bell or cable style weight.

This could change PT for myself and others i know do to no weight required to reset if my legs give out. So push with my legs in a work out finally would be something I have been looking for.

Now second person I will mention here my son who is also 100% disabled Veteran. This would work great for him and others like him. He still in his mid 20's and his world is turned up side down do to his military Injuries. He has spine issues and seizers so being able to do bench or triciptes would be a blessing know no load. If he was to have a seizer he would do have any weights to fall on him or anyone helping him.

Has we have a concept 2 row this would help a lot of us n disabled Para world.
We hope to be able to add this to our home therapy work room. This very much needed. The upper body press and pull will help with my para hand peddle bike.

Why we do not go to a gym? PTSD, seziers, cronic pain is just the start. Biggest personal safety to ourselves and others around us.

This may not fit in everyone's workout world but in the youth and para world it would fit in fine.
Hope to be able to get one if these. Time to save money VA disability does not pay well. It may take sometime but today I set a goal to buy one. For now we keep using our concept 2 row.

Keep up the great job concept 2.

Joebasscat
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Joined: February 14th, 2020, 10:05 pm

Re: Concentric v Eccentric revisited

Post by Joebasscat » February 6th, 2025, 11:49 am

Disabled Veteran. wrote:
February 5th, 2025, 7:58 pm
I have seen a lot of opinions on the StrengthErg.

I will give a few ways that this will help some not all. I am a disabled Veteran. I broke both ankles and had bones removed
Now you can not compare disability to another disability.
I need something like the StrengthErg for my legs so I can get some leg press. Plus chest and tri work out. I get cronic pain and at anytime that can cause me to lose a bar bell/dumb bell or cable style weight.

This could change PT for myself and others i know do to no weight required to reset if my legs give out. So push with my legs in a work out finally would be something I have been looking for.

Now second person I will mention here my son who is also 100% disabled Veteran. This would work great for him and others like him. He still in his mid 20's and his world is turned up side down do to his military Injuries. He has spine issues and seizers so being able to do bench or triciptes would be a blessing know no load. If he was to have a seizer he would do have any weights to fall on him or anyone helping him.

Has we have a concept 2 row this would help a lot of us n disabled Para world.
We hope to be able to add this to our home therapy work room. This very much needed. The upper body press and pull will help with my para hand peddle bike.

Why we do not go to a gym? PTSD, seziers, cronic pain is just the start. Biggest personal safety to ourselves and others around us.

This may not fit in everyone's workout world but in the youth and para world it would fit in fine.
Hope to be able to get one if these. Time to save money VA disability does not pay well. It may take sometime but today I set a goal to buy one. For now we keep using our concept 2 row.

Keep up the great job concept 2.
Thank you both for your service and the sacrifices you have made. Happy to hear the StrengthErg may be a great benefit to you!
65 5’-11” 72.5 kg

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