However, I did have someone with a Ph.D. in kinesiology (I think?) tell me that there's essentially no evidence of knee, hip, or back dysfunction in developing countries where people don't sit all day.
One of the interesting things you see in undeveloped countries is that people squat in a position that is hideously uncomfortable if you're used to using a chair.
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I don't; it was just a thought experiment.
However, I did have someone with a Ph.D. in kinesiology (I think?) tell me that there's essentially no evidence of knee, hip, or back dysfunction in developing countries where people don't sit all day.
One of the interesting things you see in undeveloped countries is that people squat in a position that is hideously uncomfortable if you're used to using a chair.
Here's a somewhat nutty article on it called "third world squat": http://www.t-nation.com/free_online_article/sports_body_trai... but it is an actual thing that people and it makes for a different muscle development than chair-dwellers have.