Size Principle of Motor Unit Recruitment Explained

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Size Principle of Motor Unit Recruitment Explained

Рет қаралды 37,816

The Movement System

Күн бұрын

Пікірлер: 90

@TheMovementSystem 4 жыл бұрын

Here's the link to join the Strength and Conditioning Study Group on Facebook: facebook.com/groups/2415992685342170

@TheCurlyGirlys Ай бұрын

Helps with A&P test I'm taking in the morning! Thanks!

@SquatFull Жыл бұрын

This video is an excellent presentation of the henneman's size principle. I use it in my resistance weight training. I use heavier weights in my compound resistance exercises than in isolation resistance exercises. Using this approach, I am attempting to train type 2 muscle fibers and type 1 muscle fibers, respectively. Also, this approach impacts myofibrillar hypertrophy training with compound exercises and sarcoplasmic hypertrophy with isolation exercises

@emilykelleher6147 3 жыл бұрын

Thank you, im taking a strength and conditioning class right now towards my Exercise Science degree and this video helped me!

@TheMovementSystem 3 жыл бұрын

You're welcome!

@andreaaborqui4228 7 ай бұрын

Your short vids help me out SO much! Thank you so much for simplifying these complex concepts :)

@ajaynangalia334 3 жыл бұрын

Great explanation..thanks!! Your lectures are really helping me understand my ACE CPT course material 😃

@AmberMardones 3 жыл бұрын

Love your videos!! ......You know that moment when you finally FULLY understand something...well I have those moments watching your videos so thanks they have been Super Helpful!

@shekharkeloniya6249 4 жыл бұрын

Your videos are really helping me learning fitness. I regularly watch your channel.

@TheMovementSystem 4 жыл бұрын

I appreciate that! Happy to help!

@annavaillancourt1603 4 жыл бұрын

Thank you! All your videos have helped my studying

@TheMovementSystem 4 жыл бұрын

Great! I'm glad they have been helping

@mikeb2644 Жыл бұрын

Here for medical information, not sports. But really well done. Well organized. Clearly explained. Efficient-- a good amount of info in only a little time. Good job. Thank you.

@bhagyashreepanchal5702 2 жыл бұрын

So glad you have a video on this!! I'm studying this for my exam!!

@cpitlegit 4 жыл бұрын

Studying the CSCS and watching these videos is helping tremendously. Love what ya do!

@TheMovementSystem 4 жыл бұрын

Thanks!

@smahrsuliman4889 4 жыл бұрын

same when I study CSCS always his channel is on and search the topic to a better understanding

@omeirbabi 4 жыл бұрын

Thank you Matt as usual !

@TheMovementSystem 4 жыл бұрын

You're welcome!

@BengenixFitness 3 жыл бұрын

Hey man. Nice video. Great work and well explained. Thank you. Ben.

@TheMovementSystem 3 жыл бұрын

Thanks Ben!

@christiangalexy1805 Жыл бұрын

Great video keep up the good work well done.

@TheMovementSystem Жыл бұрын

Thank you!

@jessicabritz1062 3 жыл бұрын

Such a good explanation 👏

@TheMovementSystem 3 жыл бұрын

Thank you!

@gavhlev2853 2 жыл бұрын

Great explanation!

@TheMovementSystem 2 жыл бұрын

Thanks!

@tcameronrealestate 6 ай бұрын

Your graph was cool too thanks

@sanikagodbole8874 2 жыл бұрын

Thank you! Very helpful ❤️

@TheMovementSystem 2 жыл бұрын

You’re welcome!

@tcameronrealestate 6 ай бұрын

Awesome explanation !

@davidcheung28 Жыл бұрын

Very well explained. Thanks!

@praneetraj582 Жыл бұрын

Thanks

@lissa4922 3 жыл бұрын

Thank you!!! This video is so helpful in understanding what muscle fibers we use when :)

@TheMovementSystem 3 жыл бұрын

Glad it was helpful!

@gavhlev2853 2 жыл бұрын

Thank you so much!

@TheMovementSystem 2 жыл бұрын

You’re welcome!

@joannamierzynska631 2 жыл бұрын

Wow. Thanks, man!

@TheMovementSystem 2 жыл бұрын

Thanks for watching!

@ekim1mike 4 жыл бұрын

Thank you!

@TheMovementSystem 4 жыл бұрын

Glad it was helpful for you!!

@AbigailNares 4 жыл бұрын

Great info as always! Thanks for all of your videos! 💫🙏🏼😄

@TheMovementSystem 4 жыл бұрын

Thanks! Trying to keep really high quality info!

@prachikolteom Жыл бұрын

Excellent explaination!

@chrisawesome3091 3 жыл бұрын

Thank you. Great informative video. Thumbs up from me

@TheMovementSystem 3 жыл бұрын

Thanks!

@zxxz0000 4 жыл бұрын

Question, if all the muscle fibers are being activated on one signal from the nervous system, how can only one type be recruited for specific jobs?

@TheMovementSystem 4 жыл бұрын

Good question. Muscles have many nerves and each nerve goes to one motor unit (group of muscle fibers). One nerve always activates every muscle fiber within that motor unit. But you may only activate for example 50 motor units (all type 1) for a light exercise vs. 500 motor units (type 1, type 2a, and type 2x) for a heavier exercise.

@sureshsportsperformancecon2362 3 жыл бұрын

Very informative 😎. Your hairstyle remind me Sheldon Cooper TBBGT

@TheMovementSystem 3 жыл бұрын

Haha thanks!

@mijm1987 4 жыл бұрын

A motor unit is the neuron and the muscle fibers it innervates.

@TheMovementSystem 4 жыл бұрын

Correct

@bhuwanpratap Жыл бұрын

Sooper

@katieschwerdt972 3 жыл бұрын

Hi! So during powerful muscle contractions, the fast fibers will not be recruited first correct? This video was very helpful, keep doing what you do!

@TheMovementSystem 3 жыл бұрын

There is some evidence that some people can do what you're suggesting which is selective recruitment of type 2 fibers first. However in general most muscles contract with type 1 first then type 2 if needed.

@samuellewis3991 2 жыл бұрын

@@TheMovementSystem Why would that even be beneficial? You'd be using a nonrenewable resource, depleting an energy system before it was necessary.

@TheMovementSystem 2 жыл бұрын

@@samuellewis3991 But it could be protective for example if you needed to jump out of the way of an oncoming car. So there's a reason the body may learn to develop selective recruitment.

@samuellewis3991 2 жыл бұрын

@@TheMovementSystem So it's not just that the fibers are sitting in reserve, it's that they actually behave differently?

@TheMovementSystem 2 жыл бұрын

@@samuellewis3991 Yea over time as you develop better connection between the brain and type 2 muscle fibers they can begin to be selectively recruited.

@gloriasheen6336 3 жыл бұрын

Thanks for the video! Can you explain how Concentric only movement and Eccentric only movement affect the recruitment of motor units? Am i right in saying that since Concentric movements only use Active elements (Myosin-Actin Contraction) and not passive elements (Titin/ Collagen..) the fast rate of contraction means fast rate of fatigue, thus exhausting type 1 fibers faster, which then activate the type 2 muscle fibers? On the other hand, the Eccentric only movement does not require as much Active elements (Myosin-Actin contraction) with the help of Titin Protein molecule that generates another source of force, thus it mainly activates higher threshold of motor units (Type 2) ? Does the eccentric only movements not involve Type 1 as much? Thanks!

@sorryinadvance5362 2 ай бұрын

Hey whats up guys

@manofgod7622 4 жыл бұрын

How can I develope bigger motor units as a teenager, and how?

@TheMovementSystem 4 жыл бұрын

Lift heavy weights consistently

@khoatruong91 Жыл бұрын

If soleus has high type I ( 80-95% composition), should I change this muscle with more high reps and intensive tempo ( slow eccentric) to gain muscle hypertrophy? I feel a bit confused about how to use these information into practice although I understand clearly all your information Thank you :)

@giovannighiglioni1673 8 ай бұрын

If i do 100 reps to failure with a low weight, do i only use tipe 1 or at the end, when i almost reach failure, I use also tipe 2? Thank you

@aztechproductions5146 3 жыл бұрын

You missed an important part of the activation. In that, during sustained exercise resulting in fatigue, additional motor units are activated to sustain force- which can include the activation of higher threshold motor units during a relatively low intensity exercise providing that exercise is performed to failure or close to failure

@chrisawesome3091 3 жыл бұрын

I’m not the smartest in this field, so to summarize what you said in layman’s terms - when jogging or walking (the exercises that he said only use type 1 fibers) for a long time, and no more type 1 fibers are left, the body will start to recruit type 2 fibers. Then when those run out, muscle failure is reached. - Is that the gist?

@aztechproductions5146 3 жыл бұрын

@@chrisawesome3091 it's more like if you were to do a set of biceps curls with a low weight for example. At first maybe there is a good proportion of type 1 fibres and type 2 fibres active. However the fibres Doing the work will soon fatigue (predominantly the type 2 fibres due to their lower resistance to fatigue) so then more type 2 fibres will have to be recruited to assist the now fatiguing fibres in order to sustain the exercise. This will basically go on until a vary large amount of motor units are recruited to attempt to sustain the exercise until all the muscle fibres are fatigued and the exercise cannot continue.

@chrisawesome3091 3 жыл бұрын

@@aztechproductions5146 ook. I get it now, ty. I think I saw, in another video, an animation explaining this.

@chrisawesome3091 3 жыл бұрын

@@aztechproductions5146 also, would my first comment be correct about if one walks or jogs (only uses type 1 fibers) and then eventually fatigues all those fibers, will the body start to use type 2 fibers and then muscle failure is reached? Or once the type 1 is used up, muscle failure is reached?

@aztechproductions5146 3 жыл бұрын

@@chrisawesome3091 jogging is too maintainable to really fatigue all the fibres as it mainly used type 1 fibres and type 1 are more aerobic and so are more resistant to fatigue. You would need an intensity of exercise that would build up enough lactate to cause localised muscular fatigue. So more like cycling up a hill or something like that