44
How is the calories meter on exercise bikes accurate
(lemmy.today)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 11 Oct 2024
44 points (97.8% liked)
No Stupid Questions
35868 readers
343 users here now
No such thing. Ask away!
!nostupidquestions is a community dedicated to being helpful and answering each others' questions on various topics.
The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:
Rules (interactive)
Rule 1- All posts must be legitimate questions. All post titles must include a question.
All posts must be legitimate questions, and all post titles must include a question. Questions that are joke or trolling questions, memes, song lyrics as title, etc. are not allowed here. See Rule 6 for all exceptions.
Rule 2- Your question subject cannot be illegal or NSFW material.
Your question subject cannot be illegal or NSFW material. You will be warned first, banned second.
Rule 3- Do not seek mental, medical and professional help here.
Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.
Rule 4- No self promotion or upvote-farming of any kind.
That's it.
Rule 5- No baiting or sealioning or promoting an agenda.
Questions which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.
Rule 6- Regarding META posts and joke questions.
Provided it is about the community itself, you may post non-question posts using the [META] tag on your post title.
On fridays, you are allowed to post meme and troll questions, on the condition that it's in text format only, and conforms with our other rules. These posts MUST include the [NSQ Friday] tag in their title.
If you post a serious question on friday and are looking only for legitimate answers, then please include the [Serious] tag on your post. Irrelevant replies will then be removed by moderators.
Rule 7- You can't intentionally annoy, mock, or harass other members.
If you intentionally annoy, mock, harass, or discriminate against any individual member, you will be removed.
Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.
Rule 8- All comments should try to stay relevant to their parent content.
Rule 9- Reposts from other platforms are not allowed.
Let everyone have their own content.
Rule 10- Majority of bots aren't allowed to participate here.
Credits
Our breathtaking icon was bestowed upon us by @Cevilia!
The greatest banner of all time: by @TheOneWithTheHair!
founded 1 year ago
MODERATORS
It's a measurement of energy needed. Bodies are going to take different amount of force to move the thing, but it's also going to take a different amount of time, and impart less inertia, which starts averaging out to the same amount of calories. I bet they also raise the amount of calories shown to account for no process being 100% efficient.
Measuring how we consume our calories is also a bit tricky, the bike tells you the minimum energy you spent moving the wheel. It could be slightly more, but not by much because our bodies are pretty efficient at using stuff to burn into energy. The amount needed to move the bike is about as much as we'll burn because there isn't a lot of waste. Of course if you have a condition, or are out of shape this changes and the counter becomes more inaccurate, but in a positive way. (You burned more than the counter said). Some will record your body mass index and other info to try to shift you in the right average.
We still calculate how much calories are in food by burning them and seeing how much energy they emit (heat). It's not really how we consume calories but very similar. All in all calories aren't a great way to think about human strength, or exercise
Humans are about 25 % efficient. Not bad, but also not that good. So factor 4 to wherever actual work you did. The question is: Does the bike take that into account already?
Is that 25% efficient at burning calories to produce force or inefficient at converting food into usable calories?
I meant to say in the spending of our calories through our muscles
Input to output of a human. So 1000 kJ food = 250 kJ work done with muscles.
Makes sense. So the bike gives kJ in work done with muscles, which I guess is even more confusing
I do not know if that is the case.