Calculate Calories Burned from Climbing Stairs

  • Context: High School 
  • Thread starter Thread starter ls0803
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Discussion Overview

The discussion revolves around estimating the calories burned from climbing 300 stairs, with a focus on the weight of the individual and the height of each stair. Participants explore the calculations involved in determining energy expenditure based on these factors.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant asks for an estimate of calories burned while climbing 300 stairs at a weight of 280 pounds.
  • Another participant inquires about the height of each stair, which is later stated to be approximately 12 inches.
  • A participant calculates the vertical distance climbed as 225 feet and estimates the energy expenditure using the formula mgh, resulting in a calculation of 634 calories, but expresses uncertainty about the accuracy of their calculations due to unit conversions.
  • There is a mention of body efficiency, with a suggestion that if the body is 80% efficient, the actual caloric expenditure may be lower.
  • One participant expresses skepticism about their own calculations, particularly regarding the treatment of pounds as a unit of mass.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the exact number of calories burned, with differing calculations and expressions of uncertainty regarding the assumptions made in the calculations.

Contextual Notes

Limitations include potential confusion between units of mass and weight, assumptions about body efficiency, and the accuracy of the height of the stairs.

ls0803
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I climb 300 stairs to my office every morning - can anyone tell me if i weight 280 pounds how many calories i will burn off (approximately)

thanks

Tired in Liverpool
 
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How high is each stair?
 
12 inches i'd say
 
I think you will be dissapointed.

I get 300 stairs = 225 vertical feet. The energy required to raise 280 pounds 225 feet is mgh = 280*225 (pounds = mg) =63000 lb*ft = 634 calories = 0.6 kcal (dietary calories). Say your body is 80% efficient, then you expend 0.75 kcal of food intake.

I'm suspicious of my answer- my calculator treats lb as a unit of mass (kg), so if I surreptiously add a factor of 32 to mgh, I get 20/25 kcal, which seems reasonable.

Bleah- it's too early in the morning to try and deal with pounds vs. kilograms...
 
lift for me tomorrow!
 

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