5K effort won't burn any fat? O_o

MiniForklift

@jim-russell said in 5K effort won't burn any fat? O_o:

Rhabdomylosis

I remember listening to a few podcasts where elite runners have had it, not good at all and sounds like a very serious condition

I’m just watching a film on Michael McKnight attempting to break the Colorado Trail FKT, he’s a low carb ultrarunner. He even did a 100km race a while back on zero calories just to see if it can be done - think he finished in 17hrs and change which is darn impressive. Pretty sure he also won the Moab 240 last weekend

But diet aside, I think you need to find what works for you as no two athletes/people are going to be the same (unless you’re a twin)

zhang965

@dimitrios-kanellopoulos said in 5K effort won't burn any fat? O_o:

I don’t eat carbs and I do best efforts. So where does my energy come from ?

The perhaps answer to this comes to studying blood glucose and how your body metabolizes fat but also when and how it’s stored.

I love to eat crabs, if you don’t eat crabs, do you eat any fish or lamb?

ChrisA

@lexterm77 said in 5K effort won't burn any fat? O_o:

You can think of it as economy model of supply/demand. What body sees no use for it does not spend energy maintaining it.

Yes that’s true - didn’t know the calcium thing . Amazing that it adopts that fast.

zhang965

I got 1g burned fat.

lexterm77

@zhang965

How did you manage to extract 300cal from 50g of carbs?

isazi

@lexterm77 isn’t 1 g of fat 8 (almost 9) calories?

zhang965

@lexterm77 said in 5K effort won't burn any fat? O_o:

@zhang965

How did you manage to extract 300cal from 50g of carbs?

I don’t know, buy one get one free?

lexterm77

@isazi said in 5K effort won't burn any fat? O_o:

@lexterm77 isn’t 1 g of fat 8 (almost 9) calories?

Yes, add up all and you get approximately 4cal per gram of carbs or proteins and almost 9 cal per gram of fat. Anaerobic pathway you get one pay more not the other way around unless “debt” is included into caloric consumption or burner only calculates aerobic consumption?

isazi

@lexterm77 yeah I read fat instead of carb, sorry

lexterm77

@isazi

turns out 5.5cal per gram of carbs, very strange

zhang965

1g fat
60 g crarbs

herlas

@zhang965 those HR zones seem wrong right? 179 green ?

zhang965

@herlas said in 5K effort won't burn any fat? O_o:

@zhang965 those HR zones seem wrong right? 179 green ?

180 185 is my zone 3
186 196 is z4
Beyond 196 z5

I did the test in a lab

zhang965

so we had:

1(fat)+60(carbs)=297 (my last 5k résultat)
3(fat)+103(carbs)=574 (this 10k)

than fat = 50, carbs =4 …

lexterm77

so we had:

1(fat)+60(carbs)=297 (my last 5k résultat)
3(fat)+103(carbs)=574 (this 10k)

than fat = 50, carbs =4 …

Fat is 8.8cal/g, rest is Lithium Ion

zhang965

@lexterm77 said in 5K effort won't burn any fat? O_o:

so we had:

1(fat)+60(carbs)=297 (my last 5k résultat)
3(fat)+103(carbs)=574 (this 10k)

than fat = 50, carbs =4 …

Fat is 8.8cal/g, rest is Lithium Ion

ah ok ,so I got 5.5 cal/g carbs

lexterm77

@zhang965

Burner appears to exclude anaerobic portion while calorie data does not. I am not sure but someone can confirm.

isazi

@lexterm77 now that you say so, I think calories does also include the metabolic calories, so maybe burner only looks at the activity. Could this be the reason?

lexterm77

@isazi

On Long walks burner is closer to calorie counter (50cal missing) vs running (progression runs z3-z5 intervals) (130cal missing) discrepancies would increase as time progresses. This is what I thought but data point to something else (hinting at anaerobic)

55min interval 905cal 156g carb 17g fat (770cal in burner)
130cal missing (2.36cal per minute)

90min walk 881cal 119g carb 40g fat (828cal in burner)
50cal missing (0.55 cal per minute)

97min trail run easy 1322cal 233g carb 43g fat (1310cal in burner) this one is accurate

Dimitrios Kanellopoulos

@lexterm77 guys keep in mind the passive calories. They are counted for the workout but should not count for the burner