Hello, I am not trying to be a know it all or anything like that, I just do not want people watching this for educational purposes to be confused. I noticed at the time mark 1:30 you begin talking about the amount of oxygen in the air. While yes there is less oxygen, there is not proportionally less in oxygen in the air. Air composition is about the same still at higher elevations, oxygen still makes up about 20% of the air. The air is less dense though, therefore there is less oxygen. I know this sounds like I'm splitting hairs but I do have a purpose behind my madness. Because the air is less dense the air pressure is lower. In connection with running this means you are going to sweat more because your sweat will evaporate easier and faster, you will also lose a lot of water through breathing. When you then attempt to use a high elevation training mask, you are not truly getting high elevation training, why? you are only receiving the proportionate amount of oxygen that you would receive in an environment with lower air pressure. But your body is not being affected the same and you do not sweat and lose water the same way you would at higher altitudes. Now I'm rambling, anyway i found this while completing my undergraduate research project about the relationship between altitude and marathon completion time. I hope this is more useful than just seeming like I'm coming off as rude, and I hope it inspires more personal research in the topic. Also, I run as well so I find it interesting too!
Hello,
I am not trying to be a know it all or anything like that, I just do not want people watching this for educational purposes to be confused. I noticed at the time mark 1:30 you begin talking about the amount of oxygen in the air. While yes there is less oxygen, there is not proportionally less in oxygen in the air. Air composition is about the same still at higher elevations, oxygen still makes up about 20% of the air. The air is less dense though, therefore there is less oxygen. I know this sounds like I'm splitting hairs but I do have a purpose behind my madness. Because the air is less dense the air pressure is lower. In connection with running this means you are going to sweat more because your sweat will evaporate easier and faster, you will also lose a lot of water through breathing. When you then attempt to use a high elevation training mask, you are not truly getting high elevation training, why? you are only receiving the proportionate amount of oxygen that you would receive in an environment with lower air pressure. But your body is not being affected the same and you do not sweat and lose water the same way you would at higher altitudes. Now I'm rambling, anyway i found this while completing my undergraduate research project about the relationship between altitude and marathon completion time. I hope this is more useful than just seeming like I'm coming off as rude, and I hope it inspires more personal research in the topic. Also, I run as well so I find it interesting too!