Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
"As an object approaches the speed of light, the object's mass becomes infinite and so does the energy required to move it."
5-minute mile is closer to the speed of light than 6-minute mile.
Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
Work=Force*Distance
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
It's because 02 Debt is exponential accumulation.... so there are thresholds to running becoming a lot harder... this is basically why the aerobic threshold is called a threshold... Accumulation of lactate is a by-product of the primary cause, which is too hard of working muscles and 02 debt.
Years of training correctly / even just mileage makes it so you get more efficient (aerobic capacity) and can run faster without accumulating as much 02 debt.
In racing, if you go too hard on that day too long or too soon, or whatever, It's called "Blowing Up" .... because the fatigue accumulates exponentially and comes at you fast... 02 debt ... lactate ... tapped out muscles ... tapped out Anaerobic contributions ...
One factor (besides the 'oxygen debt' issue that someone rightfully mentioned) is the efficiency of your diaphram. If you run intensely, your diaphram works harder then during moderate runs. Lots of consistent interval work intermixed with your base of endurance work will train your diaphram muscle fibers to work more efficiently. Your stamina - speed endurance - will greatly improve if you train your diaphram. A lot of the aformentioned "oxygen debt" results from runners who haven't trained their diaphrams - too much time with mere base building.
The first rep of an interval workout always feels hard; the next rep, however, seems easier. ‘Your breathing rate doesn’t fall; you just kind of settle into it,’ says Dr Andrew Jones, an exercise physiologist at the University of Exeter. What you experience is the result of a brief mismatch between the oxygen your legs require and the oxygen your heart and lungs are able to deliver.United Healthcare
And, I always felt my lungs expand as I get further into a workout
Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
Work=Force*Distance
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
Work=Force*Distance
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
Acronyms do not communicate. TCA cycle, ETC, FG0 even ATP all need to be spelled out.
Why is running at 5 min/mile pace so much harder than 6 min/mile? Do we just run that much less efficiently as we speed up? Biking at 12 mph vs 10 mph isn't that much more difficult. What's the scientific explanation?
Work=Force*Distance
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
Yeah don't use the work equation since work is equal regardless of speed...you need to use power which is Force x Velocity. I just finished lecturing on linear kinetics 2 weeks ago so my undergrads better also know that! :)
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
Acronyms do not communicate. TCA cycle, ETC, FG0 even ATP all need to be spelled out.
These are commonly used in any exercise physiology class and I'd assume since most runners put decent effort into understanding human physiology then most here should know what they mean and really don't need to be spelled out but...
TCA is another term for Krebs cycle or the tricarboxylic acid cycle after glycolysis where acetyl coa enters.
ETC is the electron transport chain where NAD and FAD carry H+ ions to.
ATP is the primary energetic molecule in the body Adenosine Tri-Phosphate
Running faster requires an increase in force, which leads to an increase in work.
The body uses ATP to produce force. More force means more ATP is required. ATP is made via different bioenergetic processes (aerobic (TCA Cycle, ETC, FGO) vs anaerobic (SG glycolysis)). These bioenergetic pathways create biproducts like hydrogen atoms. Hydrogen atoms (acid, essentially) interrupts ATP binding to myosin and a host of other side effects that eventually resolve to weakened muscle contractions. Weakened muscle contractions means a reduction in force.
Poorly explain, left a lot out but there's some basics for you.
Sprintgeezer glycolysis?
Lol yes, it is like normal glycolysis only much slower and far less efficient 😁
You can’t think of minuets as linear. A 10 min mile to a 9 min mile is a 10% decrease. But a 6 min mile to a 5 min mile is closer to 18%. As minuets smaller the percentage of each miner gets bigger. That’s why it is much easier to go from a 30 minuet 5k down to a 27, then a 20 minute to an 17 minute. Same time difference but the percentage increase goes way up.
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