"Endurance is one of the most difficult disciplines, but it is to the one who endures that the final victory comes.”
-Buddha
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6 comments:
I have a question for all you endurance racers out there...Why do short bursts of high-heart rate routines build endurance? I know it works, but I don't understand it. You would think that to build endurance you need to do long training sessions. Is it because you raise your max heart rate during those short spurts, which trains your heart to be stronger during long, lower heart-rate endurance events? I know that CF has improved my endurance, especially when doing long mt bike races. But mt biking is similar, because you do a lot of high-heart rate, recover, high-heart rate, recover, cycles during a race.
I believe I found my answer, as an engineer, the science behind the event is always helpful to know... (Excerpts from a study done on)High Intensity Workouts Increase Endurance more than Traditional Aerobic Exercise
"changes on a molecular level", "the number and size of the mitochondria within the muscles had increased significantly" "This change was thought to occur almost exclusively after prolonged endurance training" "Since mitochondria enable muscle cells to use oxygen to create energy, changes in the volume of the mitochondria can have a big impact on endurance performance"
I think (but don't know) that part of it is training the muscles to use oxygen efficiently. That's why newbies (even those who are fit) struggle with CF, while the regulars can seemingly go all day long...CFers are practiced at driving oxygen to the muscles and have muscles that know how to use that oxygen--Livewrong's point about mitochondria (hence, Endurance).
"When we perform VO2 max tests on untrained persons, we often see that they stop at a time point in the test when their VO2 max seems to still be on the way up. The problem is that they just do not have the aerobic capacity in their working muscles and become fatigued locally prior to fully exploiting their cardiovascular capacity. In contrast, when we test athletes, they will usually show a nice flattening out of VO2 despite increasing intensity towards the end of the test. Heart rate peaks out, VO2 maxes out, and even though some of the best trained can hold out at VO2 max for several minutes, max is max and they eventually hit a wall due to the accumulation of protons and other changes at the muscular level that inhibit muscular force production and bring on exhaustion." (http://home.hia.no/~stephens/vo2max.htm)
Of course, endurance training (at least in running beyond marathon distance) LSD is necessary for 2 reasons: prepare tendons for long pounding sessions, and teach the body to mobilize long-term fuel (neither of which we get from HHR).
In need of a good CF ass-kicking next week. See you monday-saturday.
Sami, I don't believe that will be a problem.....Are you going to do the ToughMudder event with us on May 2nd? check it out at Toughmudder.com, if interested sign-up under Team name: Corps Fitness....
See ya soon!
Matt, I like that post about VO2 max, that makes sense. It would be cool to have one those "VO2 machines".....
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