Measuring difference in Exercising in a Flat Surface vs one with Slope

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Discussion Overview

The discussion revolves around estimating the difference in effort required to walk a fixed distance on a flat surface compared to a slope, particularly in the context of exercise efficiency and potential energy considerations. Participants explore various factors influencing exercise intensity and efficiency, including metabolic rates and different forms of exercise.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant suggests using potential energy differences to estimate the effort required for walking on a slope versus flat ground, questioning the impact of slope level.
  • Another participant recommends the Pandolf equation as a starting point for calculating metabolic rates based on weight, load, speed, and slope grade.
  • Some participants argue that running is the most time-efficient exercise method, while others mention swimming, ice skating, and cross-country skiing as potentially better for aerobic fitness.
  • There is a discussion about the optimal effort level for cardiovascular benefits, emphasizing the importance of aerobic exercise over strength training.
  • Participants express personal experiences with various forms of exercise, noting the accessibility of running and walking compared to other activities that require specialized environments.

Areas of Agreement / Disagreement

Participants express differing opinions on the most efficient forms of exercise and the best methods for estimating effort differences. There is no consensus on the optimal exercise strategy or the effectiveness of various activities.

Contextual Notes

Some assumptions regarding the relationship between slope, effort, and exercise efficiency remain unexamined. The discussion includes personal anecdotes and subjective evaluations of exercise methods without definitive data to support claims.

WWGD
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TL;DR
Trying to cut down on exercise time by climbing stairs vs walking on flat surface
Ok, so I'm trying to estimate by some accounts, just informally for now, how much more effort is needed to walk a fixed distance D , first along a flat surface, then by climbing stairs.

Since my undergrad Physics is kind of rusty, please forgive my ignorance in this regard. I'm thinking of using Potential Energy ( the difference between initial, final points ), to estimate the difference of effort, I guess in carrying my mass about. I am assuming going in a constant slope, though I'm curious as to how the slope level would make a difference.

Is this a reasonable way of estimating the difference in level of difficulty between walking along a flat surface and walking along a slope?
I'm ultimately trying to cut down on exercise time without cutting down on benefits ( measured informally for now).
 
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You could start with the Pandolf equation. It should get you in the ballpark at least.

M = 1.5*W + 2.8*(W+L)*(L/W)^2 + n*(W+L)*(1.5*V^2+0.35*V*G)

M = metabolic rate, watts
W = subject weight, kg
L = load carried, kg
V = speed of walking, m/s -- range tested = 0.0-1.0 m/s (0.0-2.2 MPH)
G = grade, %
n = terrain factor (n=1.0 for treadmill)

In my own experience the most efficient way to exercise in terms of time is running. Continuous runs or intervals. Twenty minutes of that is like an hour on a bicycle or at least four hours of walking. It does kind of depend on the health of your knees though.
 
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WWGD said:
I'm ultimately trying to cut down on exercise time without cutting down on benefits
If so, then you need to study more exercise physiology and less physics. If you want cardiovascular and health benefits, you need to work out aerobically. The optimal effort for that is the hardest effort at which you can carry on a conversation speaking in full sentences without straining to breathe. Working out at higher effort levels puts you into strength training, which has a different set of benefits.
JT Smith said:
In my own experience the most efficient way to exercise in terms of time is running.
It can be argued that swimming, ice skating, and cross country skiing are a little better for general aerobic fitness.

It really gets down to the question of just how fit and healthy you want to be. Running three miles five days per week will give you good general health and fitness, and you would be able to run a 5K race without embarrassing yourself. Increasing that to 30 miles per week will put you in shape to run a half marathon, and 45 miles per week if you want to run a full marathon.

There is an upper limit to how much exercise you can do before learning the negative effects of overtraining, but few people find that limit. I can recommend RunningAhead.com as a good forum if you want to run: https://www.runningahead.com/forums.
 
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jrmichler said:
It can be argued that swimming, ice skating, and cross country skiing are a little better for general aerobic fitness.

Maybe, I can't say. But in terms of time spent I'd still vote for running. I don't have any data, it's just my gut feeling.

I used to swim a lot and also did quite a bit of self-propelled skiing. Both are excellent ways to exercise but they do require specialized environments. Ice skating too. For bicycling all you need besides a bicycle is a road or trail. For running and walking you just need shoes and some sort of semi-horizontal surface.

You can run in place barefoot really vigorously right in your home while watching T.V. and get an awesome workout in about ten minutes.
 
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JT Smith said:
Maybe, I can't say. But in terms of time spent I'd still vote for running. I don't have any data, it's just my gut feeling.

I used to swim a lot and also did quite a bit of self-propelled skiing. Both are excellent ways to exercise but they do require specialized environments. Ice skating too. For bicycling all you need besides a bicycle is a road or trail. For running and walking you just need shoes and some sort of semi-horizontal surface.

You can run in place barefoot really vigorously right in your home while watching T.V. and get an awesome workout in about ten minutes.
Yes, I've done some running/" bycicling" in place while laying on the floor for 10 minutes
I get a bit of a sweat and it knocks me out to sleep.
 

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