The greater squatting depth leads to a higher activation of the anterior side (mainly the quadriceps muscle group) and allows you to train over a greater range of motion.
The High Bar Squat Bar position and resulting in more upright body posture also allows you to achieve
greater squatting depth, as compared to the low bar position.
Not exact matches
A 2002 study by Caterisano et al. investigated the relationship between
squat depth and EMG activity of the quads, hams and glutes and found that the deeper the
squat, the
greater the glute activity.
What this breaks down to in practice is that, for example, the
depth in a
squat is important because we apply the same amount of force over a
greater or lesser distance.
It is also not uncommon to find that this drill will allow for an exploration of
greater depth in the
squat.
The reason is, that the higher bar position forces the body to stay more upright during the
squatting movement and also allows to achieve
greater depth, than a lower bar position.
Heavier loads, faster bar speeds, and
greater depth (with the same relative load), all lead to increased erector spinae muscle activity during back
squats.
Comparing
squat variations, Russell and Phillips (1989) reported that peak hip extensor moments were
greater during the back
squat than in the front
squat, even when each variation was performed to a standardized
depth and with the same relative load.
In contrast, knee extensor moments in the back
squat increase with increasing relative load and
squat depth but reduce with cues to prevent forward movement of the knees over the toes or with
greater trunk lean.
Heavier loads, faster bar speeds,
greater depth (with the same absolute and relative loads), and using running shoes rather than no footwear all lead to increased quadriceps muscle activity during back
squats.
Hip extensor moments increase with increasing relative load,
squat depth,
greater trunk lean, and with cues to prevent forward movement of the knees over the toes.
Faster bar speeds and
greater depth with the same absolute loads (but not the same relative loads), lead to increased hamstrings muscle activity during back
squats.
Knee extensor moments increase with increasing relative load and
squat depth but reduce with cues to prevent forward movement of the knees over the toes or with
greater trunk lean.
Wretenberg et al. (1996) found that peak knee extensor moments were
greater during both powerlifting
squats and during Olympic weightlifting - style
squats when performed with
greater depth (deep = maximal knee flexion vs. parallel = posterior of the hamstrings parallel to the ground).
The lower bar position leads to a
greater forward lean in the descent and results in less
squatting depth.
Finally, with a similar absolute load,
greater depth during
squats leads to a
greater hip extension moment, at least as far as parallel (Bryanton et al. 2012; Yoshioka et al. 2014).
It's a
great way to work on your
squat depth and groove your hip hinge and
squat pattern.
Although performing back
squats with the same absolute load but to a
greater depth has been found to lead to increased gluteus maximus EMG amplitude (Caterisano et al. 2002), this is likely because
greater depth leads to
greater hip extension moments for the same absolute external load (Bryanton et al. 2012; Clark et al. 2012).