Understanding fast-twitch and slow-twitch muscle fibers | Peter Attia and Jeremy Loenneke

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  • เผยแพร่เมื่อ 17 ม.ค. 2025

ความคิดเห็น • 27

  • @murielleleblanc1337
    @murielleleblanc1337 29 วันที่ผ่านมา

    Fast twitch fibres are utilized for intense , quick activity. They are not resistant to fatigue because they rely on energy stored within the cell. These fibres no not have the ability to transport oxygen . When the stored energy is used up, the muscle is unable to create more. Examples of activities that rest on fast-twitch muscle are the 100-metre sprint and 10 seconds of high intensity plyometric lunges. A marathon is an example of a slow twitch muscle activity.

  • @LukeMosse
    @LukeMosse 29 วันที่ผ่านมา +3

    Wow I learned nothing from this video other than that the guy thought Peters questions were good.

  • @jjr8220
    @jjr8220 หลายเดือนก่อน +4

    I think people need to understand fiber types as it relates to training. People need to understand that when lifting weights, fiber is recruited from slow to fast twitch based on need. Slow twitch fiber is recruited and contracted first, then intermediate fibers as needed and lastly your fast twitch fiber is recruited all based on need to continue the set. This is why it is ABSOLUTELY necessary to reach the point of concentric failure in order to train the maximum number of fast twitch fibers which is the fiber that becomes inactive and atrophies the most in the elderly when sarcopenia occurs. This is why RPE is a terrible method. It keeps you from recruiting the as much fast twitch fiber as you can. This can be done safely on machines. Furthermore, the idea that fast twitch fiber can preferentially be recruited is a complete myth which is why speed training or training with lighter weights as fast as you can does not recruit fast twitch fiber. It is not necessary to train fast plus it increases chances of injury. Fast twitch does not mean lift fast. More info can be learned from studies done by Dr. Ralph Carpinelli and strength coaches Matt Bryzcki and Ken Mannie.

    • @marcinmrzyglocki
      @marcinmrzyglocki หลายเดือนก่อน

      Did you want to say "It is not only NOT necessary but increases chances of injury" - missing another "not".

    • @jjr8220
      @jjr8220 หลายเดือนก่อน +1

      @ Yes. I corrected. Thx

    • @2GGop
      @2GGop หลายเดือนก่อน

      What improves how fast a muscle can contract without load? Explosiveness is not really related to how strong someone is. Top athletes of many sports are not as strong as weight lifters, but they can be far quicker

    • @davecollins73
      @davecollins73 หลายเดือนก่อน +1

      Exactly! Understand the SIZE PRINCIPLE people!

    • @jjr8220
      @jjr8220 หลายเดือนก่อน

      @@2GGop Grest question. I used to coach FB and track athletes and found that it’s basically neuromuscular efficiency. Practicing the specific skills as fast as possible which will allow you to utilize and recruit the maximum number of FT twitch fibers in that movement. Continuing that practice over and over will create greater explosiveness and I think it’s critical to time the skill to numerically show progression in explosiveness. I also believe that genetics play a role having another percentage of FT fiber and there is research that shows that intermediate fibers will sort of lean towards FT fiber which will give you even more explosiveness over time.

  • @Scott-hf3jt
    @Scott-hf3jt หลายเดือนก่อน +2

    Is this guy a trainer? Henneman’s size princaple has been around since 1965. Motor units or “slow and fast twitch” can be thought of as electrical cords, your phone takes a small one for less power, your dryer takes a big one for lots of power. Slow twitch are used for low energy prolonged movement . Fast twitch for movement that requires a lot of power. There are roughly 16 different size motor units. Motor units bun out in sequence from smallest to largest, depending on energy demands. Most people rarely reach the fast twitch. This is why it is important to train to failure if strength and growth is your objective. One set to momentary muscle failure is all that is needed for a muscle group. Do not over train and allow full recovery. Most people over train with volume and under train with intensity.

    • @Scott-hf3jt
      @Scott-hf3jt หลายเดือนก่อน

      Look at the physique difference between marathon runners and sprinters. Marathon is long distance, moderate intensity, slow twitch. Sprinter is short distance, high intensity, fast twitch.

    • @tsgosser
      @tsgosser หลายเดือนก่อน

      Disagree. You need many more sets for hypertrophy, in fact a minimum of 10-15 sets per muscle group a week will elicit muscle growth in most cases and there is no need to train to failure on every set. You can leave 1-2 reps in the tank for most sets. This one set to muscle failure is outdated "Mike Mentzer science"

    • @anotherjewishsharpnicholas9425
      @anotherjewishsharpnicholas9425 หลายเดือนก่อน

      "This is why it is important to train to failure if strength and growth is your objective." This is wrong on both accounts. Training to failure isn't what gives you strength, but intensity is. And, intensity will give you hypertrophy without going to failure. You need to go close to failure when you are doing hypertrophy specific training.

    • @Scott-hf3jt
      @Scott-hf3jt หลายเดือนก่อน

      @@tsgosseryou know you’re over the target when you Challenge people’s dogma and someone who can only deadlift 235 gets offended

    • @brianmolloy9393
      @brianmolloy9393 27 วันที่ผ่านมา

      the whole point of this vid is that the fast-slow model is now under legitimate debate

  • @selasertorio
    @selasertorio หลายเดือนก่อน

    Mitchell Hooper the strongest man in the world was a runner before.

    • @531c
      @531c หลายเดือนก่อน +2

      Sprinter or marathon? A whole world apart

    • @anotherjewishsharpnicholas9425
      @anotherjewishsharpnicholas9425 หลายเดือนก่อน

      @@531c Marathon. He's talked about how his joints weren't built for endurance but strength.

    • @thunderbird3694
      @thunderbird3694 หลายเดือนก่อน

      @@anotherjewishsharpnicholas9425 the marathon is endurance

    • @anotherjewishsharpnicholas9425
      @anotherjewishsharpnicholas9425 หลายเดือนก่อน

      @@thunderbird3694 That's my point. He has a bone structure that was built for strength-not endurance. This is part of the genetic component they alluded to.

  • @kiranmkota
    @kiranmkota หลายเดือนก่อน +1

    bro's hair is atrocious. I can't concentrate on what he's saying

    • @Tanyakapor
      @Tanyakapor หลายเดือนก่อน +1

      😂😅😂 now that you mentioned it, I can’t either!

    • @murielleleblanc1337
      @murielleleblanc1337 29 วันที่ผ่านมา

      @@Tanyakaporlol