https://cbsminnesota.files.wordpress...pine-study.pdf
This article, barely a page excluding pictures, has been peddled with varying degrees of alarmism the past day or two. It sounds a lot of warning bells in my head. First, it rings of the cliché "Dangerous New Trend Ruins Your Health" and concerns that favourite condition, diffuse unexplained neck pain. Second, the notion of "force" used is incredibly vague; Dr. Hansraj freely switches between "weight", "force" and even "stress". The abstract explains that "forces were extracted in newtons and converted into pounds" (whatever that is supposed to mean. Again, presumably the magnitude of the gravitational pull on x amount of pounds, but it really doesn't sound like he knows what he's doing) and refers to the Newtons as "weight" (technically correct for the magnitude of the force in the direction of the gravitational field, but not very precise), for example. Nowhere is it explained what the direction of the relevant portion of the force is supposed to be, or how/what exactly is stressed, only that "for our assessment, the calculations of the stresses seen are for the neck and muscles, including ligaments and tendons". Presumably, the idea is that the force applied by the bent neck in some direction by some axis is equimomental with the force in said direction of 60 pounds carried... well, how, exactly? And why is it bad? Is it equivalent with something that is known for certain to be bad?
The numbers seem vague and the article, frankly, looks pretty useless and like it was written by someone who just doesn't understand his models (or basic mechanics), arrives at a scary-sounding number, and rushes to publish his results.
Thoughts?
This article, barely a page excluding pictures, has been peddled with varying degrees of alarmism the past day or two. It sounds a lot of warning bells in my head. First, it rings of the cliché "Dangerous New Trend Ruins Your Health" and concerns that favourite condition, diffuse unexplained neck pain. Second, the notion of "force" used is incredibly vague; Dr. Hansraj freely switches between "weight", "force" and even "stress". The abstract explains that "forces were extracted in newtons and converted into pounds" (whatever that is supposed to mean. Again, presumably the magnitude of the gravitational pull on x amount of pounds, but it really doesn't sound like he knows what he's doing) and refers to the Newtons as "weight" (technically correct for the magnitude of the force in the direction of the gravitational field, but not very precise), for example. Nowhere is it explained what the direction of the relevant portion of the force is supposed to be, or how/what exactly is stressed, only that "for our assessment, the calculations of the stresses seen are for the neck and muscles, including ligaments and tendons". Presumably, the idea is that the force applied by the bent neck in some direction by some axis is equimomental with the force in said direction of 60 pounds carried... well, how, exactly? And why is it bad? Is it equivalent with something that is known for certain to be bad?
The numbers seem vague and the article, frankly, looks pretty useless and like it was written by someone who just doesn't understand his models (or basic mechanics), arrives at a scary-sounding number, and rushes to publish his results.
Thoughts?
via International Skeptics Forum http://ift.tt/1qybxHB
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