Source notes

Finding a squat stance is not just a matter of copying someone else's feet. Researchers tested 42 healthy adults, half experienced squatters and half novices, across nine combinations of stance width and foot angle. Changing those combinations changed movement and turning forces at the hips and knees. Extreme pairings, such as a narrow stance with strongly turned-out feet or a wide stance with feet straight ahead, warranted particular caution. Novices squatted without added weight. Experienced participants also used an extra load equal to half their body weight, so this was not a test of maximum lifting.

The findings show that stance and foot direction work together rather than acting as separate rules. They also show differences between experienced and novice squatters. But measured joint movement and loading are not the same as observed injuries. The study did not establish a safest stance for everyone, and its mechanical measurements cannot tell us how a particular person will respond over months of training.

How Does This Show Up in Real Life?

A useful question is whether a technique instruction considers both stance width and foot direction. “Turn your toes out” is incomplete without considering how far apart the feet are. From their measurements, the authors suggest a moderate stance, approximately shoulder width, with about 20 degrees of outward foot placement. That is their recommendation from this experiment, not a universal target that every person must match exactly. The practical value is understanding why extreme combinations deserve attention and why changing one part of the setup can change demands elsewhere. The evidence does not justify adding weight merely because some loaded squats showed less lower-back movement. It also does not show that copying an experienced lifter's stance reproduces that person's movement control.

Only healthy participants without lower-limb injuries were studied, so rehabilitation applications remain uncertain. Novices were not tested with added weight, and the experienced group's load was moderate with little fatigue. Those limits matter for heavier or tiring sessions. The experiment also did not follow participants through a training program to measure injuries, adaptation, or lasting effects of changing stance.

Why We Cite It

Alpekin can use this work to make demonstrations more explicit about the conditions shown. An exercise video could identify whether it illustrates an unloaded movement or a particular loading setup, rather than implying that one demonstration represents every version. That helps Alpekin avoid presenting visual precision without the context needed to interpret it.

Treat the suggested setup as a research-informed starting point for understanding the movement, not a pass-or-fail definition of a correct squat. The stronger conclusion is that technique choices have interacting effects. This experiment cannot settle every coaching decision or individual limitation.