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It's interesting that they characterize a 30-second cycling effort as "all-out" when any cyclist knows it's impossible to go "all-out" for that long. You can go
by jeffbee 23d ago
It's interesting that they characterize a 30-second cycling effort as "all-out" when any cyclist knows it's impossible to go "all-out" for that long. You can go really all-out for a few seconds before your whole metabolic process needs to switch modes. A 30-second effort has to be paced. "All-out" intervals are very effective but for me they mean 4 seconds out of every 30 seconds.
- bob1029 23d agoYou might need to talk to a doctor if you can only go flat out for 4 seconds before having to slow down. You may put out more power during the first few seconds, but you should be able to go substantially longer than this before falling into the limitations of aerobic capacity.
- finghin 23d agoI assumed this was about uphill cycling, which depending on gradient checks out to me. It's also a function of bike, cargo, and cyclist mass. Lighter cyclists find climbs easier.
- jeffbee 23d agoYou should consult your doctor if your 5-second power isn't a lot more than your 30-second power. Your instant power relies on intramuscular ATP then switches to anaerobic fast glycolysis, which is itself only good for a few tens of seconds at most. After that aerobic dominates. Untrained subjects riding 30s intervals every 5 minutes are necessarily experiencing an aerobic workout and that's why I'm surprised by this definition.
- hackingonempty 23d agoHere's a video of an amateur cyclist going all out for about a minute after spending about five minutes getting up to speed, pushing his bike to 76.11 mph. https://www.youtube.com/watch?v=JM7I_uPJRYQ https://www.youtube.com/watch?v=JM7I_uPJRYQ
- jeffbee 23d agoWhat that rider is demonstrating is maximum lactate clearance after a long aerobic warm-up. This has nothing to do with the pathways by which high intensity intervals are thought to be beneficial.
- pandaman 23d agoI don't understand your objection. Anyone who is not very frail could do maximum effort for 30 seconds. It's not going to be constant power/HR/whatever but the person can still go "all-out". Consider a bear chasing you, are you going to say that you will just go all-out for 4 seconds and then pace yourself?