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Hourly 4-second sprints prevent impairment of postprandial fat metabolism

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61–70 of 136 posts

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#61
post #38

Earlier quoted context omitted.

You can do low impact. Burpees aren't too rough.

Burpees are actually super high impact. Done warm, let alone cold, they can cause patellar tendonopathy, back strains and hamstring strains. This paper says cycling - I’d be inclined to agree. Obviously that’s a barrier to entry, because you’d want an indoor stationary bike. On low resistance settings the risk of injury would be very low coming in cold.

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Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#62
post #48

Jumping cold out of your couch/chair and sprinting 5 seconds every hour, multiple times a day, sounds to me like an optimized 'quickly destroy most of your body joints' routine.

To me - it sounds like a great way to throw up or at least get stomach sickness. I can't imagine going full send with no warm up and not suffering some sort of issue after stopping.

Your warm-up accrues though. You're doing a little bit of exercise every 12 minutes for 8 hours.

You're not going to get sick.

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#63

This study used cycling sprints. I wonder if a similar effect would be observed with say, a set of pushups or squats every hour

Probably. But I think the body gets Abit tricked when the legs come into play in a locomotive fashion.

Particular sprinting. It's primal.

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#64
post #57

Earlier quoted context omitted.

I've read conflicting information about warming up over the years but it at least appears to me that the consensus is slowly moving away from several common exercises such as stretching, which apparently even seems to have negative effects.

Static stretching should be avoided at the beginning of a workout. I had assumed this was about sprinting in the sense of running as fast as possible, which would be absolutely insane to do without a warmup. I take around 20 minutes to warm up for sprinting, doing very specific exercises to prepare. On a stationary bike though, because the range of motion is much more controlled, I can see it being a little less of a…

Since you're doing this every 12 minutes, you'd stay relatively warm all day. American football players don't need to warm up every time they come off the sidelines

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#65
Ah, the sprint is being rediscovered once again for it's ability to squeeze maximum effect into minimum working time.

If you get a chance, try to find a copy of "A System of Multi-year Training in Weightlifting" by A.S. Medvedyev (a translation of the 1980s Soviet Olympic Weightlifting program for coaches).

It's the culmination of decades of studies across the entire Soviet athletics program about what works and what doesn't.

The summer programming shifts almost exclusively to sprinting, and only a few hundred meters per day, because that's what they found is enough work for anyone who isn't a specialized running athlete.

I follow it as soon as I can ever summer and it's immediately obvious that my metabolism increases.

IMO the secret about sprinting vs distance running is that your body can't optimize for efficiency. You can marginally increase ATP capacity, but the only thing getting better at maximum effort sprints does is make you able to produce more power while doing maximum effort sprints. It stays hard, without needing to increase volume much over time.

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#66
post #55
post #33

Earlier quoted context omitted.

It happened on a stationary bicycle trainer -> Low load on joints, as most of the weight rests on the saddle and handlebars.

The University of Bath minimal HIIT protocol also used stationary bikes (3 20" intervals 3x/week).

Getting 20 inches on a stationary bike can be hard enough.

(couldn't resist. I actually didn't know " ("double prime") could mean seconds.)

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#67
post #64
post #57

Earlier quoted context omitted.

Static stretching should be avoided at the beginning of a workout. I had assumed this was about sprinting in the sense of running as fast as possible, which would be absolutely insane to do without a warmup. I take around 20 minutes to warm up for sprinting, doing very specific exercises to prepare. On a stationary bike though, because the range of motion is much more controlled, I can see it being a little less of a…

Since you're doing this every 12 minutes, you'd stay relatively warm all day. American football players don't need to warm up every time they come off the sidelines

But they do... lots of teams have stationary bikes on the sidelines. No athlete would sit motionless for 12 minutes in the middle of a competition, not too mention that players would go through a much longer warm up before the game.

But I agree that going full force very briefly on a stationary bike with no warmup is probably fine for most people.

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#68

This study used cycling sprints. I wonder if a similar effect would be observed with say, a set of pushups or squats every hour

Leg muscles are a lot larger. You can easily stay warm while cycling or walking at a brisk pace in the winter. Less so when standing still and doing pushups or situps.

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#69
post #66
post #55

Earlier quoted context omitted.

The University of Bath minimal HIIT protocol also used stationary bikes (3 20" intervals 3x/week).

Getting 20 inches on a stationary bike can be hard enough. (couldn't resist. I actually didn't know " ("double prime") could mean seconds.)

Both temporal and angular!

Re: Hourly 4-second sprints prevent impairment of postprandial fat metabolism

#70
post #13

> This study determined if the interruption of prolonged sitting (i.e.; 8-h of inactivity) with hourly cycling sprints of only 4-s duration each (i.e.; 4-s x 5 per h x 8-h = 160-s per day; SPRINTS) improves PPL. The 4-s sprints employed an inertial load ergometer and were followed by 45-s of seated rest. So you would need to take a 5 x (4-s sprint + 45-s rest) = 245 seconds exercise break from work every hour and in…

> Does "whole body fat oxidation" mean that the an average male calorie burn of 2500 per day would be multiplied with 1,43 to 3575 calories per day? It seems extremely unlikely to me. I hesitate to bring up the 2nd law of thermodynamics because I know if frustrates a lot of people in these discussions. However, bear with me. "Calories" in this context refers to kilocalories. Burning 1 kilocalorie produces enough ener…

You mean the 1st Law.

There are other places than heat (e.g. synthesizing muscle and other types of tissue) for the excess energy to go.

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