View Single Post
  #15  
Old August 12th 19, 11:07 PM posted to rec.bicycles.tech
Tom Kunich[_5_]
external usenet poster
 
Posts: 1,231
Default Recovery and Diet

On Monday, August 12, 2019 at 2:06:51 PM UTC-7, Frank Krygowski wrote:
On 8/12/2019 3:43 PM, wrote:
On Monday, August 12, 2019 at 8:41:28 PM UTC+2, Tom Kunich wrote:
On Sunday, August 11, 2019 at 1:46:55 PM UTC-7, wrote:
On Sunday, August 11, 2019 at 10:00:57 PM UTC+2, Tom Kunich wrote:
Personal experience and Global Cycling News programming often disagree as they have speaking about Ketone diets.

As it turns out, a weight loss diet and their idea of a Ketone dirt are more or less the same thing. Protein and Fats and no carbohydrates.

Since my wife has been trying to lose weight (and has been successful) I've ended up eating GCN's sort of Ketone Diet.

It hasn't have any positive effect on my performance and I can tell you that. Yet when I stop on a ride and have a coffee and a sugar roll, I get not only a boost in performance but I feel a lot better after the ride without the need to fall asleep in the lounge chair before I can even put the bike away.

Now what this is telling me is that if you are on the Ketone Diet your (or perhaps only my) liver simply cannot metabolize fat fast enough to maintain a performance level, but the speed with which I can metabolize carbohydrates is enough to hold my performance levels (which, granted are only around 200 Watts on a good day) for my normal rides of around 40-60 miles with a lot of climbing.

Now if we are talking a scant 10K I have generated as much as 400 watts over that distance a couple of times this year.

Even in the Pro peloton the effect of ketons is questioned. Best and cheapest recovery drink is 0.5 liter of low fat choco drink: 2 third carbs and 1 third protein.

Again Tom 400 W is Pro level, even for 10 k miles. I set a new personal record yesterday for a Strava segment here in my neighborhood. Flat, no stop signs, almost no traffic and a moderate tailwind: 5.53 km in 7min 23 sec; average speed 45 km/hr. Average power of 259 Watt, measured with a power meter. Average heartbeat of 167 bpm. Overall place 44 out of 4070. First place out of 207 in this years classification in my age category: 55-64 yr. I am 62 y old. So I'm above average and nowhere near 400 W for a shorter distance. Again 400 Watt is Pro level.

Lou

I have the idea that you don't climb Lou. You absolutely must generate a lot of power to climb and the 12 or more percentage grades can take power in the 400 to 600 category just to crest.


Well I certainly don't climb as much as I would like but I have my moments and I have those moments for 30 years now:

https://connect.garmin.com/modern/activity/3820852059

That aside grade has little to do with power. You only need the proper gearing. I can haul 85 kg 850 meter up in an hour. The average power needed for that is (mass*gravitational acceleration*elevation gain)/time in sec = (85*9.81*850)/3600 Nm/sec (= Watt) = 197 Watt. I can use the same available power to go fast against a headwind. There is nothing special about climbing when we talk about power needed. Accelerating after a corner or sprinting over a highway overpass you can easily exceed 600 Watt, but only for a short time. 400 Watt average over a distance of 16 km is a hard to believe value. Try a proper power meter and look at the data during a ride.


For discussing cheap and overrated Chinese headlights, the term
"chilumens" has become useful. You know - lumens that are somehow far
less powerful than standard ones.

Perhaps some people measure rider power output in KuniWatts? :-)


--
- Frank Krygowski


And perhaps some people don't mind being poo-poo heads as a career. Since you can't even ride 15 miles now perhaps you're not the one to be speaking of power.
Ads
 

Home - Home - Home - Home - Home