'Calories used in exercise' inaccurate ?!

AnnieintheN0rth
AnnieintheN0rth Posts: 33 Member
edited December 3 in Fitness and Exercise
Apparently walking for 100 mins at 18.5 mins per km burns 428 calories but walking for 100 mins at 15 mins per hour burns 514 calories!?!

That doesn't seem right to me. I have a feeling that both are quiet high, burning 1/3 of my daily allowance in only 100 mins of WALKING. Nah. How are these calculated?

Replies

  • cricket490
    cricket490 Posts: 31 Member
    I use a Garmin heart rate monitor to calculate my exercise calories because my burns were way off when using MFP calculation. It usually stated a few hundred calories more than my hrm calculated.
  • ziggy2006
    ziggy2006 Posts: 255 Member
    You walk 15 - 18.5 km (9 - 11.5 miles) in an hour? :o

    That doesn't seem right to me, either!
  • BrianSharpe
    BrianSharpe Posts: 9,248 Member
    walking burns about 30 cal per hundred lbs of weight per mile, I'm assuming that you really meant 18.5 min/km or 15 min/km........walking at 15 km/hr would make you faster than many runners (interestingly race walking at more than about 8km/hr or 5 mph burns more calories than running due to the mechanical inefficiency)

    So, back to the original question..... if you were walking at 18.5 min/km you would cover about 5.4 km in 100 min (or 3.375 miles) which would give you a caloric expenditure of about 152 cal if you weighed 150lbs

    Here's the formula (in imperial) .3 x weight (in lbs) x distance (in miles)
  • AnnieintheN0rth
    AnnieintheN0rth Posts: 33 Member
    ziggy2006 wrote: »
    You walk 15 - 18.5 km (9 - 11.5 miles) in an hour? :o

    That doesn't seem right to me, either!

    You're right. I meant to write 15 - 18.5 mins per km. Dunno why I wrote km/hr. I've fixed the post. Thanks for pointing that out.
  • AnnieintheN0rth
    AnnieintheN0rth Posts: 33 Member
    BrianSharpe wrote: »
    if you were walking at 18.5 min/km you would cover about 5.4 km in 100 min (or 3.375 miles) which would give you a caloric expenditure of about 152 cal if you weighed 150lbs

    Here's the formula (in imperial) .3 x weight (in lbs) x distance (in miles)

    Exactly what I was looking for! Thank you, Brian Sharpe :)

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