Digital Pedometer for energy expended in exercise

Click For Summary

Discussion Overview

The discussion revolves around the relationship between distance traveled and calories burned during exercise, specifically using a digital pedometer. Participants explore how to account for variations in pace and incline, particularly when climbing uphill, and seek to understand the underlying equations and relationships involved.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks to understand the relationship between distance in kilometers and calories burned, suggesting it is directly proportional and dependent on pace.
  • Another participant proposes that a chart could be used to establish a linear relationship between distance and calories, emphasizing the importance of pace in determining calorie expenditure.
  • A participant notes that walking up a 10% slope may burn about 50% more calories than walking on level ground, indicating a significant impact of incline on energy expenditure.
  • Concerns are raised about the accuracy of pedometer calculations, with one participant suggesting that it relies on approximations based on average values for pace and calories burned.
  • There is a question about how to adjust calorie calculations for uphill walking, with suggestions to consider the incline and possibly modify distance calculations accordingly.

Areas of Agreement / Disagreement

Participants express differing views on the accuracy and methodology of calorie calculations using pedometers, with no consensus on the best approach to account for incline or the exact relationship between distance and calories burned.

Contextual Notes

Participants mention the need for high-tech pedometers to accurately measure changes in energy expenditure due to incline, indicating potential limitations in the tools available for such calculations.

reena
Messages
13
Reaction score
0
I use a digital pedometer which has pace counting gigure.
Four items are displayed:
Pace number , pace number by mile, kilometer as well as consumed calories.
I need help in finding out :
1. What is the relationship between distance in kilometers and calories burnt?
2.While the pedometer calculates for walking type of pace, how do I convert it to calories in case I am climbing uphill? Where should the energy expended in moving against gravity has to be considered and what is the equation one should use?
 
Biology news on Phys.org
1. What is the relationship between distance in kilometers and calories burnt?
This is a directly proportional relationship that also depends on the exact pace. That is, if you are walking at a faster rate (or faster pace) you will expend more energy and calories. One way to correctly figure out the precise relationship between calories and distance is to record a chart as such.
(use the | to separate columns)
  • distance (km) | calories
  • 0 | 0
  • 0.5 | x cal
  • 1 | x cal
  • 1.5 | x cal
  • 2 | x cal

Where x is the amount of calories burned. This should be a linear relationship as long as pace remains constant. You can then find the slope of the line which would represent the rate at which calories are burned. For example, if your slope comes out to 60, then for every half kilometer traveled, you burn 60 calories.

2.While the pedometer calculates for walking type of pace, how do I convert it to calories in case I am climbing uphill? Where should the energy expended in moving against gravity has to be considered and what is the equation one should use?

To figure out the equation for this situation, you cannot repeat the above trials unless you have a very hi-tech pedometer. I'm not sure how you can adjust to this change, but you might want to try finding the incline traveled and add that to the distance traveled.

Hope it helps.
 
Last edited:
Typically, walking up a 10% slope burns about 50% more calories than walking on level ground.
 
I would say that the pedometer merely uses approximations, using the values of the average number of paces per mile/kilometer, and the average number of calories burned per mile/kilometer.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 24 ·
Replies
24
Views
3K
Replies
6
Views
11K
  • · Replies 14 ·
Replies
14
Views
6K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 14 ·
Replies
14
Views
27K