On Tue, Jan 5, 2010 at 8:13 PM, LyleBogart{AT}gmail.com <
lylebog...@gmail.com> wrote:> Hi All! > > Regarding [the] understanding that the effect of heavy resistance creating excessive contact pressure between the articular surfaces of the knee cap and the trochlear groove in which the knee cap glides, there is, again, no evidence to support this as being damaging to the knees. The exception to this is if one spends a substantial amount of time kneeling on a hard surface (tile setters, for instance experience this commonly). Prolonged heavy direct pressure can cause deformation of the articular cartilage of the knee cap which may lead to biomechanical pathology or simply pain. In exercises--even very heavy squatting--there is little risk of damage to the cartilage of the knee cap, presuming the rest of the kinetic chain is strong enough to withstand the heavy exercise. In fact, compressive loading of cartilage is actually essential to the health of the articular surface. So… Patrick Moore, unless you've already a knee problem, there's little danger in unseated climbing on the fixed gear (and I'm happy that this is so as I spend a great deal of time in that climbing mode, myself!)… enjoy :) I hope this helps! Lyle: I take it "DPT" does not stand for "don't know from physical therapy" and that you have some expertise in the matter, and I thank you for this information. One more question: is *seated* high torque pedalling, the kind that leaves my knees twinging slightly the day or so afterward, bad for the knees? Thanks again, very much, Patrick "spinning small gears makes me tired" Moore--
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