jkoch6599 Member

Have you seen the Firstbeat white paper on their beat-by-beat method of estimating energy expenditure? This algorithm is used in most of the recent Garmin cycling GPS devices. https://www.firstbeat.com/app/uploads/2015/10/white_paper_energy_expenditure_estimation.pdf I'm still not sure how HRV can account for the…

The formula to estimate calories burned, based on 25% gross efficiency is: Average Watts x Duration in Seconds / 1000 The problem is that gym stationary bikes generally don't have calibrated power meters, so the measured watts can be questionable. If I were you, I'd start with 80% of the formula above and then adjust it if…

3 w/kg is near the top of cat 5 in Coggan's chart. That's not even close to novice or untrained. Also that chart was built based on his data from about 200 cyclists, weekend warriors to elite level. It would be a mistake to think that the same general rules hold for obese people, since additional fat mass is unlikely to…

And a novice to fair rider can ride at 100% of FTP for how many hours?

Well, I didn't mean that people without a power meter don't know how calorie burns take place. If you're relying on Strava for an estimate though, it's likely you're way off. I've done the same route on the same bike with and without a power meter. Sometimes the Strava wattage estimate is in the ballpark, and sometimes…

Thank you. Being able to ride for 5.5 hours in an aero position at any wattage...and then run a whole marathon is impressive to me.

What are we disagreeing about again? You're doing a bunch of hand waving to try to get around the fact that you basically need to do 277W for an hour to burn 1000 calories, and 4 hours at 277W is really hard even if you're a big guy. Power meters are +/- 2% accurate. Metabolic efficiency doesn't vary that much among…

What you don't seem to understand is that measuring your power is the only practical way to account for differences in wind resistance, rolling resistance, etc. A bigger, less aero guy burns more calories precisely because he produces more power. Strava does a very poor job at estimating power output, and therefore…

LOL If you're not using a power meter, you have no idea how many calories you're burning. Strava estimates are going to be way off, except for the case of a long, steady climb.

If you're riding with a power meter, it's measuring the actual mechanical work done at the crank/hub/etc and then making an assumption about gross metabolic efficiency to convert that to calories burned. The range of efficiency among people is pretty narrow, but Strava makes a more optimistic assumption (wrt calories…

Yeah, Golden Cheetah is an amazing piece of software. Hard to believe that it's free. The 4iiii left only power meter released very recently for $399, with the right side supposedly coming this summer. Between that and Watteam, a PM will be affordable for just about everyone soon.

How much of a numbers guy are you? It makes training indoors much more enjoyable for me, but I like planning, analyzing, testing, etc., almost as much as riding. I do my hardest two workouts each week on the KICKR even if the weather is perfect, because that's the only way I can be sure hit my numbers. It's all rollers…

You're exactly right, KICKR in erg mode...but the power numbers come from my P2M. Numbers on the KICKR are about 10W higher. I love the KICKR. ERG mode was a game changer for me. You have no choice but to hit your targets, and it's great to just plan a workout and ride without having to think about your numbers. I tried to…

That makes since because an Ironman cycling leg is a long effort near threshold, whereas a road/MTB race is lots more short bursts. I think roadies call your training reverse periodization, and it's really common for triathletes. Good luck in your Ironman!

Thanks! It's actually 5 x 5 min, but kind of hard to see on the Garmin charts. I estimate my FTP at 280W based on hitting 3 x 20 with 5 minute rest intervals regularly in training. 200W is the default FTP on Garmin's site I think. I set mine a couple of times, but it keeps changing back. I track my stuff in Golden Cheetah…

I burned 1500 calories before work this morning ;) https://connect.garmin.com/activity/734378445

If your calibration walks are within 1%, then I wouldn't worry about it if I were you. If you're concerned about the difference between the two trackers, why don't you borrow your mom's, wear both, then do a calibration walk and compare them? I bet a lot of the difference between you two is stride length.

Boring, but I've eaten the exact same thing for lunch every day at work for years. Salad with lettuce, broccoli, carrots, green pepper and 4 oz of grilled chicken (no dressing), a low-cal yogurt, and an apple.

Nothing first thing in the morning. Then after my bike ride I had a shake with 12 oz skim milk, 1 tbsp of chocolate syrup and a scoop of whey. An hour later I had 2 mini bagels with a tbsp of jelly. 837 calories burned and only 515 consumed, so I'm kind of starving right now but I'm trying to make room to have 2 beers…

Strongly disagree. The scale is an objective measure of progress. It's too easy to fool yourself with the rest.

I'm sure they told you this already, but thyroid cancer is very treatable and very rarely fatal, so don't spend your bday worrying.

Grotesque in a bikini...but may have the proportions to look halfway decent in clothes.

Aww how cute!

I'm aiming for a 500 cal deficit and eat 1950 if I don't train (cycling), and around 3000 if I do.

Wow, that's awesome.

If you want to lose weight, and assuming you aren't getting massive calories burns from exercise, start with setting MFP at sedentary and adjust your calories slowly upward until you're losing a pound a week (or whatever your goal is). If you want an excuse to eat more that you should, and then come back in 2-3 months…

2015 is going to be all about mud Zumba. You heard it here first!

Thanks, that's exactly what I was trying to get at.