Split squat straight up and down: stride length, torso, milestones from bodyweight to dumbbells and what measurements show about glute work.
The split squat is a stationary lunge: you stand in a split stance, the feet stay fixed, and you lower yourself straight down and press back up. Because you do not move forward and back, you can focus entirely on depth, knee and balance.
The honest answer to "Does the split squat do more than the normal squat?": not across the board, but it has its own strengths. In a study with nine healthy men, muscle forces in glutes, thigh and hamstrings rose with added load (0, 25, 50 and 75 % of body weight), and for several muscles the rise was stronger in the split squat and step-up than in the squat [2]. If you want to hit the glutes maximally, look elsewhere: in another study with twelve team-sport athletes, the barbell hip thrust reached higher peak activity in the large glute muscle than the squat and split squat [1].
You learn the movement in one session. A quiet descent without wobbling takes a few weeks, depending on your starting point (rule of thumb).
Take a long step forward, feet about hip-width apart on two rails, not on a line. The front foot stands flat, the back one on the toes. The pelvis faces straight forward.
Milestone: stand still for 10 seconds, pelvis level.
Lower yourself straight down, the back knee pointing to the floor. The torso stays upright, ribs down. The weight rests more on the front foot. How far you go down depends on your mobility. A depth at which the front knee still stays over the foot and the pelvis is level is the right one.
Milestone: 3 times 8 per side without sliding forward.
Drive up with the front leg, weight on the whole foot. The back leg only helps as support. The front knee points toward the toes.
Milestone: 3 times 10 per side, knee stays over the foot.
Take dumbbells in both hands and let them hang beside the body. With load, muscle forces in glutes, thigh and hamstrings rise [2]. Start light. If you raise the back leg, it becomes the Bulgarian split squat, its own guide.
Milestone: 3 times 8 per side with dumbbells, torso quiet.
How you measure progress: if you manage 3 times 10 per side without wobbling and with even tempo, raise the dumbbells in small steps. Start every set with the weaker side. Rule of practice, not a study value.
Where does it fit in training? The split squat fits at the start or in the middle of your leg work. 2 to 3 sets per side are enough, 60 to 90 seconds rest. These are practice values, not study values. As a reference: the standing lunge also pushed the inner thigh muscle over the 45 % threshold for a strength stimulus in one study [3].
The split squat is forgiving. With dumbbells: be careful when setting them down and let nothing hover over your foot. Sharp pain in the knee is a stop signal. Burning in the thigh is desired.
With knee complaints, agree the build-up with a professional. This guide explains and motivates, it does not replace supervised training or a coach.
Imagine you push the floor away under the front foot. That is an external focus: instead of "extend the leg" you think "push the floor away". That is a coaching image, not a study finding.
If you push the floor away, you drive through the whole sole and not the toes.
A second trick: tilt the torso slightly forward if you want to feel the glutes more, and keep it upright if you want to challenge the front of the thigh more. That is coaching practice, not tested in these studies.
Long step forward, feet hip-width on two rails, torso upright. Lower straight down until the back knee almost touches the floor, and drive up again with the front leg. The feet stay fixed.
In the split squat the feet stay fixed, in the lunge you take a step. The split squat is easier to learn because you do not have to manage balance and stepping at the same time. That is coaching practice.
Mainly the front of the thigh, glutes and hamstrings. With added load, forces in these muscles rose partly more in the split squat than in the squat [2].
For getting started 3 sets of 8 to 10 reps per side. That is a rule of practice. Progress only once the technique sits.
No. In one study the hip thrust reached higher peak activity in the large glute muscle than the split squat [1]. The split squat trains the legs as a whole and demands balance, the hip thrust is the glute specialist.
Reverse Lunge: How to Do It Properly