Depends on the height of the steps and the person’s height and weight. At a certain point it begins to take significantly more effort to push down due to leverage, the position of the muscles, weight distribution, aerobic thresholds, etc. But this typically happens in an average person about when your knee passes the height of your waist, especially repeatedly. This is also why children or shorter people tend to get more tired climbing the same steps as taller people.
The standard height of stairs in most building code was typically designed to be ideal for the height of the average healthy male. But that isn’t exactly 100% perfect especially considering that it’s more important that every step is the same height all the way up a flight, or people will trip, and you can’t always divide the height exactly evenly as not all flights of stairs are the exact same height. But there also are a lot of steps that are out of code or are single steps or groups of single steps that have to fit a specific, uneven slope.
But in general, with steps in a modern building that is to code, your knee will have to come up to a height where you need to use more than twice as much effort on a two stair hop.
Depends on the height of the steps and the person’s height and weight. At a certain point it begins to take significantly more effort to push down due to leverage, the position of the muscles, weight distribution, aerobic thresholds, etc. But this typically happens in an average person about when your knee passes the height of your waist, especially repeatedly. This is also why children or shorter people tend to get more tired climbing the same steps as taller people.
The standard height of stairs in most building code was typically designed to be ideal for the height of the average healthy male. But that isn’t exactly 100% perfect especially considering that it’s more important that every step is the same height all the way up a flight, or people will trip, and you can’t always divide the height exactly evenly as not all flights of stairs are the exact same height. But there also are a lot of steps that are out of code or are single steps or groups of single steps that have to fit a specific, uneven slope.
But in general, with steps in a modern building that is to code, your knee will have to come up to a height where you need to use more than twice as much effort on a two stair hop.