Easiest Way to Remember Contraction Types: Concentric vs Eccentric vs Isometric | Corporis

If you’re struggling to understand the difference between concentric, eccentric, isometric, isotonic, or isokinetic contraction types, let me help you.
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☠️NONE OF THE INFORMATION IN THIS VIDEO SHOULD BE USED AS MEDICAL ADVICE OR OPINION. IT IS FOR GENERAL EDUCATION AND ENTERTAINMENT☠️
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Hi, I’m Patrick. I’m a freelance science writer based in the San Francisco Bay Area. I hold a bachelor’s degree in Athletic Training and a master’s in clinical exercise physiology. I used to work in the clinical setting as a certified athletic trainer, physical therapy aide, and a certified strength and conditioning specialist. After working in the clinical setting, I went back to school and became a teacher. The goal of my content is to help normal people, not just pre-med students, learn about the human body. That might mean explaining a topic from an anatomy class or exploring a topic from medical history.
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[@Clockworkbio]

Now, if y'all are wondering where all that ATP powering these contractions comes from--well then boy howdy do I have a video for you: kzbin.info/www/bejne/oobVdpitjrF8h8k Thanks so much for having me on--I'm still BLOWN AWAY that I got to make animations for a Corporis video!

[@obcolik]

I appreciate if you could explain the following please; when your biceps concentrically contract do your triceps eccentrically contract at the same time? if not what causes the triceps to stretch while biceps contract? @Corporis

[@spookygreg]

Isotonic? More like ginandtonic which is what I’m gonna need after exams

[@Corporis]

Hey ohh!

[@patrick07124]

your explanation is even better than ChatGPT this is an achievement

[@RBmusic2000]

Videos like you guys are the best thing to come out of the internet world. I wish i had this type of learning available when i was at school. Learning via videos work much better than listening to a human trying to keep sane and controlling a class of 40 pupils every day. I'm now 37 and learning things i would never have discovered passion for without videos like these. thanks

[@sailorg00n]

I'm in the process of getting my personal trainer certification with an extra few courses on corrective exercises, and your channel has been a total godsend. It's so much more intuitive to understand these principles with the way you explain them, thanks so much for making this content!

[@SickThorn]

Thank you. I am learning this as a hobby to understand my body. You explanation and examples are excellent!

[@catherinebreaux6143]

Thank you! Working on an anatomy and physiology essays and this video absolutely clarified the keys differences between the three types of contractions I’m writing on. 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻

[@katherineiacobino5701]

Thank you so much for this. Extremely helpful!

[@emiliobilbao4075]

Best video on the topic hands down! Thanks for the help, new subscriber

[@chrissypurcell2211]

Quality video and information. Thank you!

[@markwenzy]

okay the animations were mind-blowingly awesome, easy to understand. Thanks for these amazing work

[@mayrabowen9254]

Very great quality of video and explanation!

[@quarteracreadventures855]

Thank you for this helpful information!

[@liftingbykaroline7972]

I can't believe how complicated concentric, isometric and eccentric muscles contraction is! Than we need to pinpoint individual muscles and describe the nature of the motion for the different anatomical movements in the three planes of human movement; I did not foresee that exercise science would be this nuanced! Overall, I'm enjoying this field of study and this is a very nicely made vid, thank you!

[@favouritethaddeus3256]

Thank you so much for this wonderful piece.

[@nikevisor54]

The quality of these videos is always fantastic :)

[@Corporis]

Glad you like them! This was a fun one to make

[@tiffers2.063]

The animation of the sarcomere was the best I've come across and really helped me understand what's going on on the microscopic level - THANK YOU!

[@Corporis]

Thank you! I put together some digital downloads of that image if you'd like them. You don't have to sign up for Patreon to use them: www.patreon.com/posts/sarcomere-for-38536736

[@VVMapleVids]

Love the content!

[@Corporis]

Much appreciated, thank you!

[@nickdengler2985]

OKAY. Just found out about your channel. You rock good sir. Keep up the great work.

[@Unraveled]

The collab of the decade. Awesome!

[@Corporis]

Stoked to get to work with Peter

[@heatherfiumano4764]

You are a great speaker! Thanks so much for this video!

[@Corporis]

You are so welcome! More coming soon

[@user-kk8kb6tu8g]

Thank you for making such a great video!

[@Corporis]

Our pleasure! I've had this one in the idea folder for a long time

[@DansFitness]

Helpful 😎👍🏽

[@Mental-medicos]

Sir its great…. You push all my knowledge towards application bases….And thats basically the end of all we study …

[@mariamfarouk9551]

Thank you

[@michaelanthony279]

You are an artist of teaching.

[@zoddnosferatu2126]

Your video is so well explained❤️ Thank you so much, may God bless you

[@Corporis]

Glad it was helpful!

[@samanthaestlund589]

Thanks!

[@ZaccheusMukahiwa]

This is a great video, thank you!

[@Corporis]

Glad it was helpful!

[@princetandukar3543]

This channel is extremely criminally underrated!

[@Corporis]

Much appreciated, thank you!

[@bfitposturalfitnesseliteperfor]

wow absolute great way that you explaining thank you way to goo

[@Corporis]

Glad it was helpful!

[@v.m.p.8204]

I would have preferred animation-type of presentation to show visually the Concentreic, Eccentric and Isometric contractions, or ask a person to demonstrate them. Visual always helps. Thanks for your video; this is the first time I bumped into your channel and no doubt I will come back.

[@sherjeelrmalik]

Hey man..do you know any good videos on youtube that explain the class of levers in a easy to understand way?

[@googlyeyes340]

Thanks, that makes the difference between concentric and eccentric easy. (Eccentric: "ek-centric")

[@andreasuslar7412]

nice video!

[@Corporis]

Thank you! Cheers!

[@quashawnchadwick2334]

Commenting to get more content like this!

[@Corporis]

You're going to love this fall's video then. It's almost entirely musculoskeletal

[@savannahwiseman7526]

As a frustrated massage therapy student who is smack dab in the middle of anatomy and kinesiology classes I thank you

[@ershmaniago8534]

Thank you. I sometimes get things confused hehe

[@cierrahdisnezare]

If I had the influence to get your room on Room Rater I would hope they'd give it full marks. Content of video was good too lol

[@Corporis]

What about isoconceccentrikinetic?!?!? Riddle me that, science man!

[@ranayaghi5626]

Great video.. I have 2 question please answer me 1. What is the difference between force production and energy expenditure ? 2. İn the last example (push up) how do you know that the triceps the one who contracte ( concentric,eccentric) not biceps I mean why we don't say the biceps concentric when we go down and eccentric when we go up ?

[@didagencheva8267]

@Corporis could you please answer the second question - why we don't say the biceps concentric when we go down and biceps eccentric when we go up?

[@bontentengu]

How are isotonic contractions explained with the length-tension curve? I thought that tensions vary depending on the length of the muscle, so wouldn't a true isotonic contraction be impossible?

[@robinsingh7673]

I really enjoy learning from your video. It is really good source of knowledge, but I think you was talking bit to fast and for first couple mins I lost what was you saying. Great work thanks for your help.

[@halnader9427]

What does it mean when you say "smallest amount of maximal force"?

[@adusparx]

Hey, this video was amazing! What do I have to study to learn about this? What is this field called and where can I start?

[@helga4791]

Physical Therapists, Occupational Therapists, Personal Trainers and Massage Therapists need to know this

[@gainez]

Literally learned more from this video than a semester in kinesiology 🤦‍♂️

[@Corporis]

That means a lot, thank you. And best of luck in kinesiology

[@sherjeelrmalik]

in the first example of isometric, you said force from muscle = from resistance, but if you hold a dumbell in a bicep curl like 12 pounds how is that equal to resistance from the muscle? Is it because from a resistance which is not moving in motion? Also in non- isometric motion if you have a heavy weight why is that your muscle cannot produce the same force?

[@Corporis]

This is a good question! The first example is an isometric contraction because your bicep is producing the same amount of force to lift the dumbbell as the dumbbell exerts from its weight. Your bicep *could* produce more force, but at that moment, it's producing exactly as much force as is required to hold the dumbbell in place. As for your second question, would you mind clarifying? Are you asking why we can't lift very heavy weights?

[@sherjeelrmalik]

@@Corporis Yes, I understand much better now...thanks for the reply...Keep up the good work!

[@andrewlol9095]

got a thor 4 ad before the video and now imma off myself from the internet forever

[@dr.mlelwa9604]

Can I make animation video with you??

[@haveacigar5291]

I dont get how you can focus on one type, during an exercise isnt it all three if you lift?

[@Kranti27]

Extremely useful video's available for free :)

[@Corporis]

Glad it was helpful!

[@DaBlondDude]

So the gym advisor's "resistance training" burns less energy but produces more force than contracting the muscles would?

[@Corporis]

Yes! Both on the microscopic filament level AND the macroscopic level. This master's thesis paper from 2016 compared exercise programs consisting of entirely concentric, eccentric, or mixed exercise and found that concentric exercise overwhelming consumed more energy than eccentric. etd.ohiolink.edu/apexprod/rws_etd/send_file/send?accession=kent1479465117642973&disposition=inline

[@DaBlondDude]

@@Corporis So why is eccentric supposed to be better according to these gym trainers? You'd think using more energy would be a goal

[@Googledeservestodie]

"superintendent I was just uhh stretching my calves on the windowshil- isometric exercise care to join me?"

[@AmberxCamp]

SIR! *knocks on computer screen* Excuse me, SIR! *knock on screen even harder* Where were you LAST YEAR when I needed this help and failed my NASM CPT exam! 😛I'mm retesting this year and this FINALLY made sense of the sarcomere and other things!

[@uncleted3961]

What is “ee-sentric”?? I think he means “ek-sentric”

[@PlusHappylab]

YOU SHOULD TRY ANIMATION

[@nrknice]

Really weird, because if you are pushing a car that is driving towards you. Though that force is greater than your force, your muscles would shorten while pushing it.

[@TheNebuloza]

The sound when your logo appears sounds like a bad joint crack and it made me queasy during the rest of the video :S

[@georgf9279]

You forgot egocentric. Small unidentifiable movements with enormous weight.

[@Corporis]

Hahaha, and it somehow extracts everyone else's energy

[@nashvillearmwrestling9715]

Great in theory, not practical though. Concentric uses far less energy because it takes a fraction of the time as eccentric. Get strong at concentric and isometric, the muscle will accommodate it self as necessary.

[@earningthomas4640]

OKay so i'm trying to memorize the difference between concentric and eccentric in my head. The best I could do is to say that concentric= contraction. Eccentrice = The opposite

[@cloudoftime]

Why do all these fitness people say e-centric? The word is ec-centric. EK-centric.

[@Doctorul68]

How many years did you study for making this business? I think youtube is paying you with a bunch of money !

[@socratiskarim3411]

Speed talking ??!!

[@CTMPRODUCTIONSRQ]

Simple way??? Not so sure. Why do people in the states speak at twice the speed in their videos? Great information but not a simple guide as stated.

[@alexbadea5594]

I think he explained everything in the first 3 minus, after that is just a bonus

[@diego1fm2]

thank you i understood nothing

[@alseppi5348]

Lol wow. We are just a bunch of bio-bots.

[@julp8728]

Wrong pronunciation for "eccentric". Look up the correct one

[@Corporis]

Welp. I pronounce it this way.

[@mano2432]

FFS, it's Ex-centric, not E-centric! Basic stuff.

[@Corporis]

It's a regional thing. I say eccentric, you say eccentric

[@mano2432]

@@Corporis Not regional, just wrong. Doesn't matter how many of your teachers mispronounced it, it's still wrong. Look it up.

[@EpiphanySME]

Facking click bait title, easiest to remember, like common core math were easier, budumtum (onomatopoeia).

[@Corporis]

Can I help clear up anything from the video for you?