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April 21, 2010
How low do you squat?
Everyone ranging from my mother to one of our pro athletes coming off knee surgery is warned about one thing; don’t squat with your knees past your toes. I agree, why would you want to pursue flexibility and strength at the same time? It is just too efficient. Full squat depth can be described as descending all the way down until your calves touch your hamstrings, and generally involves the knees traveling past the toes at the bottom position. Antagonists argue that this position increases joint stress, particularly at the knee. With most of our new athletes, it is painful to get the proper depth because our hips are so tight from sitting at the computer, playing sports aggressively, and worst of all; aging. The squat can be a dangerous exercise when performed incorrectly, whether it is this hip inflexibility or the athletic egos that prod us all to put too much weight on the bar. However, the benefits yield far greater results than any other exercise (See Sparta Point 12/2/09). A 2003 study out of the University of Memphis examined squats under 2 different conditions, one group restricted forward shin movement (i.e. keeping the knees behind the toes), while the other allowed subjects to squat normally, pushing the knees past the toes. The researchers found that restricting the movement of the knees over the toes increased the forward lean of the trunk and inward deviation of the knees, resulting in a 22% decrease in knee torque and a 1070% increase in the torque placed on the hip and low back. Another study out of the University of Southern California have added to these findings of increased hip/back stress, but discovered no difference in knee stress on varying depths. So the safest method of squatting is to focus on technique, as this lift is a skill like anything else (see Sparta Point 10/12/09). On your descent, keep your chest up, your heels on the floor, and go as deep as possible (ignoring wherever your knee position ends with regard to your ankle). As you get comfortable, continue to increase the weight. But if you’re competing against our athletes, please avoid squats or perform them only halfway down, as exercise must be inefficient, never simultaneously improving both strength and flexibility. Fry AC, Smith JC, Schilling BK. Effect of knee position on hip and knee torques during the barbell squat. J Strength Cond Res. 2003 Nov;17(4):629-33.
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April 21, 2010
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3 thoughts on “How low do you squat?”

  1. G’day Doc,
    Just a quickie on the above bud-
    if one of your athletes doesnt have the required mobility to reach desired depth in the squat will you just keep plugging away on repetitions with a low load until respectable range over training sessions is achived or would you complex some mobiliy/release work with the working sets to eliminate any acute inhibition? ie rolling out or more dynamic stretching of problem areas or antagonists.

    cheers mate

  2. I’ve never found much efficiency in rolling out, releases, or stretching in squat ROM.

    While the aforementioned can help, the quickest way has been to squat more frequently, establishing the “skill” of a full ROM. Especially since tighter athletes move less wt, it allows the movement to be done more frequently throughout the week

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