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Hourly 4-second sprints prevent impairment of postprandial fat metabolism

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

#81

It was strange at first, when everyone got their Apple Watch and started standing up, seemingly at random, in meetings. “Gotta meet my stand goal!” Gonna be really weird when they go tear-assing down the hallway

Oop, someone's got the zoomies!

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

#82
post #49

"Four men and four women participated in two trials" I'm not a medical researcher; is this a normal size for a study?

Maybe it's a relatively quick and cheap way to decide if it's worth doing larger and longer studies.

Voice of reason

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

#83
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…

> I mean it is literally the holy grail of dieting.

Slightly related but I have recently visited the US and I have been shocked how supercharged high sugar (ie addictive) high calorie foods are everywhere, like desserts above 1000kcal alone. It takes much more effort than in the other countries to manage caloric intake here, even eating random junk food where I live it’s hard to go above 3000 per day.

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

#84

"Four men and four women participated in two trials" I'm not a medical researcher; is this a normal size for a study?

Say you are trying to distinguish between a placebo and a cyanide pill; test subjects are young rats (base rate of death extremely low). How large of a sample size do you need? I think one control, one test subject is enough to be certain, because the base rate of death is insanely low, when measured on a per-minute basis. Sample sizes can be small and still very significant when the effect is large.

> when the effect is large

You mean when the effect is guaranteed. Cyanide is reasonably guaranteed to have the expected effect every time which is why you don't even need the control.

With only 4 test subjects you can't really draw a strong conclusion.

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

#88
post #85

'Hourly 4-second sprints' is actually 5 times an hour 4 secs (bicycle) sprints. So it is more precisely about every 12 minutes. I do not understand why it says 'hourly'? Because it sounds less often?

It must be one set of 5 reps per hour, not one sprint every 12 minutes.

That's how exercise usually works, and the study is concerned with the "least amount of exercise that can acutely improve fat metabolism and other aspects of health". Activity spaced out every 12 minutes would be disruptive and defeat that purpose.

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

#89

Earlier quoted context omitted.

> 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…

> I mean it is literally the holy grail of dieting. Slightly related but I have recently visited the US and I have been shocked how supercharged high sugar (ie addictive) high calorie foods are everywhere, like desserts above 1000kcal alone. It takes much more effort than in the other countries to manage caloric intake here, even eating random junk food where I live it’s hard to go above 3000 per day.

There's definitely an obsession with a good value in America, so everything you find in a restaurant is ultra high in calories. Even seemingly innocuous foods are probably sauteed in pounds of butter and made as criminally unhealthy as possible. It's like they're engineered to make you fat.

That being said, if you're looking to stay inside your clothes while visiting America, avoid eating at restaurants entirely.

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

#90
post #88
post #85

'Hourly 4-second sprints' is actually 5 times an hour 4 secs (bicycle) sprints. So it is more precisely about every 12 minutes. I do not understand why it says 'hourly'? Because it sounds less often?

It must be one set of 5 reps per hour, not one sprint every 12 minutes. That's how exercise usually works, and the study is concerned with the "least amount of exercise that can acutely improve fat metabolism and other aspects of health". Activity spaced out every 12 minutes would be disruptive and defeat that purpose.

Article states 4s activity followed by 45s seated rest, repeated 5 times. So you're actually occupied with the workout task for 4m+05s every hour, even though only 20s of that is sprinting.
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