If I am 180cm, 70Kg with an FTP of 300W & my girlfriend is 170cm, 60Kg with an FTP of 200W & we ride for 1 hour at 100W do we burn the same amount of calories? I think yes as we’ll both burn the same to produce the same but she thinks no given I’m working at 30% of FTP & her at 50%. Bring on the s…

You do the same work if you both ride at 100 watts, which is 360 kJ of work. Whether you both have the same metabolic efficiency is another matter, but within +/- 5% you will probably burn the same calories.

Wasn’t this kind of discussed in the most recent Podcast? I’d have said no. You’re both aiming for the same watts for the same time duration but, your working at a significantly lower % of your FTP. My answer is based on this being done on a trainer where all other factors (weight, drag etc…), are…

[image] Grant727: do we burn the same amount of calories? Yes, @janerney 's answer is correct, including the metabolic efficiency variable What will change, although calculating how much requires a gas exchange test, is where those calories come from. Likely yours will come more from fat tha…

I think this is possibly one of the biggest misconceptions for beginners - because it feels hard, they think they’re burning more calories. But in fact Peter Sagan would burn exactly the same if he put out the same watts, even though he wouldn’t be sweating. I can imagine it can lead to over-doing …

[image] martinheadon: because it feels hard, they think they’re burning more calories Possibly counterintuitively, adding time at low intensity is way more effective at burning calories than a harder workout. Hard workouts are relatively inefficient at burning calories (unless you have limite…

It’s maths. Watts x No. of seconds = Joules which correlate to calories. If you do an hour at an easy pace you will produce & use fewer calories than when riding at a harder pace. For instance i spent an easy hour today sat on the trainer watching the Tour De France and burned about 600cal. On Th…

[image] RCC: For instance i spent an easy hour today sat on the trainer watching the Tour De France and burned about 600cal. On Thursday night I raced for an hour and burned 1100 calories That’s an insanely easy pace on the trainer. Imagine your racing for an hour was an all-out time trial –…

[image] jpowers: If you wanted to match the 1100 calories of racing, you could hold a constant 245 W for one hour 15 minutes. That would be less than 70% FTP. Which do you think is easier and more repeatable, racing full-bore for an hour, or 70% FTP for 1.25 hours? Here’s a really good demons…

Hello together, I have been discussing the following question with my girlfriend for a while and we cannot agree on an answer. Possibly you can help us solve the question: Assuming two identical riders both pushing 200 watts for an hour. This equates to approximately 720 KJ. To my knowledge the kj…

The heart rate is immaterial in terms of total calories burnt. There will likely be small differences in calorie burn depending on efficiency, etc, but you’d need lab testing to figure out those differences, they’re unlikely to be very large, and it could be rider A or B who is burning more. Rider …

A question on Calories

Nutrition

trpnhntr July 29, 2019, 12:14pm 12

Heart rate doesn’t matter

Similar discussion here: A question on Calories - #8 by jpowers

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A question on Calories

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