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WisePhantom t1_jdwivwy wrote

Reply to comment by [deleted] in Study Suggests Wild Blueberries Help Burn Fat. Results showed participants burned notably more fat after consuming wild blueberries. For example, fat oxidation rate rose by 19.7%, 43.2%, and 31.1% at 20, 30, and 40 min after cycling. by Wagamaga

Good points. It would also be helpful to study whether it’s actually the blueberries or if eating anything healthy before a workout increases fat burn. Compare it to nothing, pre-workout, control doses.

In addition, I would love some future research into timing of the snack - whether delays between eating and beginning the work out matter.

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[deleted] t1_jdwj9y1 wrote

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needtofigureshitout t1_jdyn3b3 wrote

What would be the point of using less trained individuals? That creates another variable to account for, since training adaptations would be greater in novices than those already adapted. Using trained individuals would give a more accurate representation of the effects the study is researching.

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[deleted] t1_jdynbja wrote

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needtofigureshitout t1_jdynpyz wrote

I think you aren't understanding. Yes fit people burn more fat. Which is why using fit individuals to measure an increase in fat oxidation is more significant than using untrained people. If it worked for the fit people, it would work for untrained people on top of their adaption to exercise. Using fit people is more accurate because it already accounts for a variable.

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[deleted] t1_jdynvr2 wrote

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needtofigureshitout t1_jdyog2h wrote

That isn't what is measured though. The study measured for a change in fat burning by addition of anthocyanins into the diet, not whether fit people burn more fat. It is not useless to untrained people because these effects in trained people are a measure of the effects of blueberries for fat oxidation during exercise, so untrained people would theoretically have greater benefit from exercise by adding anthocyanins into their diet.

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needtofigureshitout t1_jdyrtce wrote

Your other reply isn't visible to me in the comments.

I'm not sure what is difficult to understand. Trained people burn more fat, yes. Untrained people burn less. So the experiment wants to see what eating blueberries does in regards to the fat burning effects of exercise. To remove the potential of beginner gains from skewing the results, use trained individuals to study the effects. The participants abstained from anthocyanins, and tested the fat oxidation. Then introduced anthocyanins, and tested again, showing an increase. Your point is irrelevant. The result of the study is that blueberries in the diet increase fat oxidation in response to exercise in humans. Like i said, if it showed effects in trained people, it would likely show effects in untrained people. There isn't some switch that just rejects anthocyanins because you aren't aerobically trained.

A small sample size isn't necessarily bad, it provides a stepping stone for the next group to investigate.

Edit: the authors of the study also declared the funders (blueberry company) basically didn't touch the study, and it is published in a peer reviewed journal.

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[deleted] t1_jdyszdv wrote

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needtofigureshitout t1_jdytr2m wrote

Man, sorry, but you're kind of dense. What do you think would happen if they tested moderately trained people? That they don't further develop aerobic adaptations from training?

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needtofigureshitout t1_jdym800 wrote

They didn't eat it preworkout, and they used a blueberry powder. The point was to measure differences of adding anthocyanins into the diet.

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WisePhantom t1_jdyqf59 wrote

Pre-workout as in the supplement powder not as a reference to timing. Basically to compare it to other supplements.

And per my understanding they fasted overnight for a morning workout. I’m interested in the timing between ingestion and beginning the work. Does the benefit decrease with increasing time and if so how much - is 12, 8 or even 2 hours enough to see a noticeable decrease in effectiveness?

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needtofigureshitout t1_jdysge9 wrote

"Or if eating anything healthy before a workout"

I understood that as you meaning that they had the blueberries before working out. The study was meant to evaluate anthocyanin content in the diet having an effect, i don't think they were considering timing. But that would be interesting to see. EGCG shows increased fat oxidation when taken prior to exercise.

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WisePhantom t1_jdywi4t wrote

Ah I see where I wasn’t clear. That’s my bad. To clarify, I was wondering what the results would be if they added controls.

Something like: Group 1: 0 supplements + healthy diet + 12 hr fast

Group 2: pre-workout + healthy diet + 12 hr fast

Group 3: blueberries + healthy diet + 12 hr fast

Group 4-n: (same as 1-3 but vary fasting time and dosage to establish max/min recommendations).

I took a look back at some of the reference papers and there’s been several studies already on this particular supplement. I wouldn’t be surprised if someone else has already looked into my questions and I just haven’t come across it yet.

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needtofigureshitout t1_jdywwj1 wrote

That would be interesting to see. It really is amazing how much stuff is already out there, sometimes I'll randomly think of an effect a food may have on a condition or body function and after looking it up there's already a dozen experiments regarding it.

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