Fitness & Exercise

Squats: Understanding Muscle Engagement, Primary Movers, and Influencing Factors

By Jordan 3 min read

During squats, you will most commonly feel your quadriceps and gluteus maximus working most intensely, though the specific sensation varies based on technique, depth, stance, and individual biomechanics.

What part of your leg do you feel the most when doing squats?

While squats engage a multitude of muscles, you will most commonly feel your quadriceps (front of the thigh) and gluteus maximus (buttocks) working most intensely. The specific sensation can vary based on technique, squat depth, stance, and individual biomechanics.

The Primary Movers: Quads, Glutes, and Hamstrings

Squats are a foundational compound movement, meaning they involve multiple joints and muscle groups simultaneously. The sensation you experience is a direct result of which muscles are under the greatest mechanical stress to produce the movement.

  • Quadriceps Femoris (Quads): Located on the front of your thigh, the quads (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius) are powerful knee extensors. They are heavily recruited, especially during the ascent phase of the squat, to straighten the knee joint. You will often feel a burning sensation in your quads, particularly if you maintain a more upright torso or perform deeper squats where the knees travel further forward.
  • Gluteus Maximus (Glutes): As the largest muscle in the human body, the gluteus maximus is a primary hip extensor, responsible for driving your hips forward and upward out of the bottom of the squat. If you focus on pushing through your heels, maintaining a slight forward lean, or performing wider stance squats, you are likely to feel significant engagement and burn in your glutes.
  • Hamstrings: Comprising the biceps femoris, semitendinosus, and semimembranosus on the back of your thigh, the hamstrings play a complex role. They are hip extensors, assisting the glutes, but also knee flexors. In the bottom of a deep squat, they are stretched and work eccentrically to control the descent. During the ascent, they act synergistically with the glutes for hip extension. While crucial for stability and power, they are often felt less directly as the primary mover compared to the quads and glutes during the concentric (lifting) phase.

The Influence of Squat Depth and

Key Takeaways

  • Squats are a compound movement primarily engaging the quadriceps and gluteus maximus.
  • Quadriceps are powerful knee extensors, felt intensely during ascent, especially with an upright torso or deep squats.
  • The gluteus maximus is a primary hip extensor, activated by pushing through heels, a slight forward lean, or wider stances.
  • Hamstrings assist glutes in hip extension and control descent, but are often not felt as the primary mover during the lifting phase.
  • The specific muscles felt most during squats are influenced by technique, squat depth, stance, and individual biomechanics.

Frequently Asked Questions

Which muscles are most commonly felt during squats?

You will most commonly feel your quadriceps (front of the thigh) and gluteus maximus (buttocks) working most intensely.

What role do the quadriceps play in squats?

The quadriceps are powerful knee extensors, heavily recruited to straighten the knee joint, especially during the ascent phase of the squat.

How does the gluteus maximus contribute to a squat?

The gluteus maximus is a primary hip extensor, responsible for driving your hips forward and upward out of the bottom of the squat.

Are hamstrings considered a primary mover in squats?

While crucial for stability and power, hamstrings are often felt less directly as the primary mover compared to the quads and glutes during the concentric (lifting) phase.

What factors can influence which muscles I feel most during squats?

The specific sensation can vary based on technique, squat depth, stance, and individual biomechanics.