What happens to the body during a Marathon
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What happens to the body during a Marathon


So there are 40,000 steps in a marathon and every time you make a step you take the full force of your body weight plus all of the acceleration that is put into that, so it’s a really highly impactful event. The impact for your joints is quite significant on your muscles; that much impact through joints like the hips, the knees, the ankles and even the feet can cause those joints to feel painful. In long distance running you need to produce force but you don’t need to produce maximum force so you need to use force to propel yourself forward for long periods of time. So your muscles don’t need to be as strong but they need to be fatigue-resistant and those muscles are smaller in size than in a sprinter and actually, having a lighter body mass is helpful in running because with every step you have to propel your body weight. Therefore being a lean, light specimen makes you more adaptive to endurance running than being a very strong powerful sprinter. We know there are certain physiological characteristics that a marathon runner has to possess to be elite at that event. They have to have a really big aerobic engine and we measure that by measuring their VO2 max which is the maximum amount of oxygen they can take in to transport to the muscles and utilize but the second and almost equally important component is being a really economical runner. So, it doesn’t matter if you have a really big engine or a really big VO2 max, if you’re actually very inefficient at running, that’s not going to help you run for 26 miles So, running economically how much energy it takes for you to take each step per kilometer is very important. During a race

100 thoughts on “What happens to the body during a Marathon

  1. If you’re interested in the real truth behind using fat as a fuel source, check out the work of Phinney and Volek. Seems to be plenty of science and real life scenarios, self included, to support the fat as a fuel theory.

  2. I don't think I could ever do a marathon. I lack the discipline and willpower. On top of that I also lack the interest in running crazy distances like that.

  3. I’ve always wanted to train to do a full marathon but after watching this I’ll stick to skipping rope lol

  4. I have tried running, but… nope, I don't like it. I hate it. I love cycling instead. 🙂 But I admire anyone who can do even a half marathon.

  5. The human body is not condusive to running fast compared to most other animals, HOWEVER, it IS condusive to running farther and longer than nearly all other animals.

  6. Usually I race lower distances (1 mile – 8KM), but I decided to prepare for a marathon and give it a go because it seemed like an epic challenge. The day came and I ran a 2:48 which was a lot faster than I expected to; I just had the perfect race (it only got really painful with 5K to go, and I treated it like a 5K at that point). I have to say it's a very interesting event because even if you are mentally and physically prepared for it after training, you never know how your body will react on race day (did you eat right, sleep enough, did you fuel correctly along the course, is your pace slightly unsustainable, is the weather alright)? Seeing how I often cramp up on runs prior to half the marathon distance, I guess I was just super lucky that May morning; especially since going into it I had never ran more than 18 miles in one go and adding 8 more was a big risk. In the end it was an amazing experience overall. I fully recommend training for one and giving it your best shot, one of the greatest triumphs of my life so far and you will feel the same if you complete it no matter what speed. (Only bad thing is afterwards you'll likely not be able to move, I wasn't able to run again for a week because I could barley walk and my legs gave out on the way back to the shuttle LOL!)

  7. No mention of the runners high! The body hits a wall and you get burst of euphoric energy out of nowhere to keep you going till you eventually come close to that dreaded wall and you can't give no more.

  8. Wait till tall naturally gifted South Sudan kids get into long distance running from 800m and up they will revolutions it like Usain Bolt changed 100/200m. They are sleeping giants who have been derailed by civil wars.

  9. Just ran a marathon today. This video was very informative and now a can start to comprehend why my body feels like its been used as a punching bag by Mike tyson

  10. This woman knows nothing about science on how much the body can actually take. People can do a lot more than she says

  11. I like most events at the olympics, but for me the most impressive isn't the 100m, it's the marathon. Stick their average speed on a treadmill and see if you can keep up for like 30 seconds! How they sustain that for 26 miles is unbelievable.

  12. I belive Abebe bikila's two conscutive gold in the olympic marathon has inspired the two african distance running nations like no other ..not forgeting neftali tamu who won kenyas first ever gold in 10k..long live africa

  13. What happens with the sound editor in this video, do they not know about changing the levels on individual tracks?

  14. I ran a marathon … You all thinking how…simple is that 21.095 KM's + 21.095 KM's two times half marathon…😂

  15. they forgot to put running on a road doesn't have any give with each step which will put more strain on the muscles, would have been easier to run on dirt since it gives some with each step, i ran cross country and track in school, i have ran on roads and on dirt and found running on dirt is way easier

  16. I'm running my first 5k in Alabama in September, I'm also looking forward to running the 10k and the half Marathon aswell…

  17. just did my 1st 26.2 miles last week and ends up with 4hrs 2mins; 2 years of multiple of 5k, 10k and 2 half marathon before take the big step to full marathon

  18. I'm running 15k tomorrow and the longest distance I have completed till now is 10k. Really nervous if I'll be able to do this😅😅

  19. During 0:6-0:11 – He is Mr. Bikila- running in the Tokyo Olympics in 1964 and won the gold medal also. What a man on the planet! He aptly taught the world that determination is key to success. Two back to back Olympic gold medals, respective of the fact he tried to run a marathon after the age of 24. Just incredible, salute to him.

  20. One day I decided to run the Carlsbad Marathon about an hour and a half before it began. I finished in five hours and some change. It was the most excruciating thing I've ever done outside of the Army. The hardest part by far is the battle that happens in your mind.

  21. There are two types of muscle in your body: white and red muscles. White muscles have fewer capillaries because they do not specialize in using oxygen, which allows prolonged contraction and fatigue resistance because using oxygen to get the full amount of ATP per glucose is a slow process. The trade-off to is that white muscles are faster to react but fatigue very quickly. Sprinters have more white muscles than red.

    Red muscles have lots of capillaries because they use more oxygen, which allows them to generate more energy (ATP) for prolonged contraction. The trade-off with oxygen is that using it to make the most amount of ATP you can get is a slow process (as previously stated), which is not ideal for situations that require you to act quickly (such as a sprint). Marathon runners have more red muscles than sprinters.

    On a related note, this is why sprinters will never beat a marathon runner in a marathon and marathon runners will never beat sprinters in a sprint. Completely different muscle composition.

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