Do Squats Make Good for Leg Muscle Growth? Key Points

  • The squat is an effective exercise for inducing leg muscle growth, mainly the quads (i.e., vastus lateralis). However, the evidence suggests that the rectus femoris, a muscle in the quadriceps, may experience reduced hypertrophy compared to the vastus lateralis.
  • Multiple lines of evidence suggest minimal hamstring hypertrophy from the back squat.
  • Deeper squats may be more hypertrophic for the gluteus maximus, and squat depth beyond 90 degrees of knee flexion may not further the quads’ hypertrophy.
  • Some may consider the squat to be enough to induce muscle growth in all lower-limb muscles. Still, it is important to understand which muscles can be hypertrophied with the squat and its variations and which muscles may need additional complementary exercises.

Introduction to Squatting

When it comes to building big, muscular legs, squats often take center stage in many fitness and bodybuilding routines. The squats have been called. “The King of Leg Exercises” for many years; however, the effectiveness of squats in leg development has been widely debated, leading to various misconceptions about their impact on muscle growth. Research has found that the squat may not be equally effective for all muscles in the legs. In this article, we will explore the anatomy of the legs, delve into the specific muscles (i.e., quadriceps femoris, hamstrings, gluteus maximus) targeted during squats, and understand how this popular exercise can contribute to building bigger and stronger legs.

The Anatomy of Leg Muscle Growth [Quads, Hamstrings and Glutes]

Before diving into the details of squatting and its effects on leg muscles, it’s essential to understand the anatomy of the legs. The legs comprise several major muscle groups, each playing a crucial role in movement and stability. The primary muscle groups in the legs include the quadriceps, hamstrings, glutes, and calves.

The quadriceps femoris is composed of four muscles (vastus medialis, vastus lateralis, vastus intermedius, and rectus femoris). Of the four muscles, the vasti muscles often show greater muscle activation during the squat, whereas the rectus femoris is activated less. (Escamilla et al., 2001; Schoenfeld, 2010)

The Power of Squats for Leg Muscle Growth

One of the primary muscles targeted during squats is the quadriceps. Located in the front of the thigh, the quadriceps play a crucial role in extending the knee joint. The quadriceps are heavily engaged when performing squats, contributing to their development and strength.

Squats have long been hailed as one of the most effective exercises for overall leg development. Not only do they engage multiple muscle groups simultaneously, but they also provide functional benefits for daily activities. Regular squatting can enhance lower body strength, increase muscle mass, and improve mobility and balance.

Numerous scientific studies have supported the effectiveness of squats for leg muscle development. (Krzysztofik et al., 2019; Kubo et al., 2019). Studies have observed significant increases in vastus muscle size but not in rectus femoris volume after weeks of free barbell back squat training. (Kubo et al., 2019; Pareja-Blanco et al., 2017) This suggests that the back squat may not significantly increase rectus femoris size, and if it does, it may only occur in some portions of the muscle.

Studies have observed significant increases in vastus muscle size but not in rectus femoris volume after weeks of free barbell back squat training. (Kubo et al., 2019; Pareja-Blanco et al., 2017) This suggests that the back squat may not significantly increase rectus femoris size, and if it does, it may only occur in some portions of the muscle.

Studies on Squats and Leg Muscle Growth

One study compared the effects of squats in the Smith machine and leg extension exercises on the growth of the rectus femoris and vastus lateralis muscles. The results showed that the leg extension exercise led to significant growth in all regions of the rectus femoris, while the squat in the smith machine did not (Zabaleta-Korta et al., 2021). This suggests that a combination of leg extensions and squats is necessary for optimal quad hypertrophy.

Studies have shown that the greatest excitation and hypertrophy of the quadriceps occur at angles close to 90-100 degrees of knee flexion, which is between the half and parallel range of motion (ROM) in a squat. One study compared half and full squats and did not observe differences in quadriceps muscle hypertrophy. (Kassiano et al., 2023) Squatting in a range of motion between half and parallel squat depth is necessary to promote satisfactory results in quadriceps hypertrophy. (Baz-Valle et al., 2019)

Studies have shown that the greatest excitation and hypertrophy of the quadriceps occur at angles close to 90-100 degrees of knee flexion, which is between the half and parallel range of motion (ROM) in a squat.

Squats and Hamstring Hypertrophy: A Different Story

While squats are often associated with quadriceps development, they also activate the hamstrings, which are located at the back of the thigh. The hamstrings play a crucial role in knee flexion and hip extension. Despite muscle activation during squats, the hamstrings show little to no muscle growth from the back squat. Several studies have reported almost no effect of squat training on hamstring hypertrophy. (Illera-Domínguez et al., 2018; Nakamura et al., 2021; Weiss et al., 2000)

The Role of Squat Depth and Gluteus Maximus Hypertrophy

Another muscle group that benefits from squats is the glutes, which are the muscles in the buttocks. The glutes are responsible for hip extension, rotation, and stability. Squats, especially when performed with a wider stance or using variations such as sumo squats, which result in a deeper squat stance, can increase glute activation, resulting in greater muscle growth. (Neto et al., 2020)

Studies have indicated that a greater hip range of motion is preferred for gluteus hypertrophy. Exercises like the hip thrust in conjunction with squats are a great way to increase glut growth.

A deep squat results in greater glute muscle stretch, and given the relationship between hypertrophy in lengthened muscles, it is reasonable to assume that the squat can elicit significant improvements in the size of this muscle. Preliminary evidence suggests that squatting at full depth may provide additional increases in gluteus maximus size. (Kubo et al., 2019)

squats do squats make your legs bigger squats glutes vs quads
Several studies have reported almost no effect of squat training on hamstring hypertrophy. (Illera-Domínguez et al., 2018; Nakamura et al., 2021; Weiss et al., 2000)

Calves Involvement in Squats

While squats primarily target the quadriceps, hamstrings, and glutes, they have limited direct activation of the calf muscles. The calves, located at the back of the lower leg, are mainly involved in ankle plantar flexion, which is not the primary movement in squats. To develop the calf muscles, it’s important to incorporate additional exercises, such as calf raises or jumping exercises, into your leg routine.

Although squats may not directly stimulate significant calf muscle activation, they provide a foundation of strength and stability that can enhance overall lower body performance. To fully develop the calf muscles, including specific calf exercises in your training routine is necessary.

No study has found a squat-only training program results In calf growth. (Ribeiro et al., 2023)

The Impact of Squat Depth on Leg Muscle Growth

The depth at which you perform squats significantly impacts the muscles targeted during the exercise. Deep squats, where the hips descend below parallel with the knees, tend to engage the glutes and hamstrings to a greater extent. On the other hand, partial squats, where the range of motion is limited, place more emphasis on the quadriceps.

Leg Muscle Growth
Deep squats, where the hips descend below parallel with the knees, tend to engage the glutes and hamstrings to a greater extent. On the other hand, partial squats, where the range of motion is limited, place more emphasis on the quadriceps.

Several scientific studies support the importance of squat depth for muscle activation and development. Research has shown that deep squats activate the glutes, hamstrings, and quadriceps more effectively than partial squats. Therefore, incorporating deep squats into your training routine can help target and stimulate multiple leg muscles for optimal growth.

Variation and Progression in Squats

Incorporating variations of squats into your training routine is essential to continuously challenge the leg muscles and avoid plateaus. Different squat variations, such as front squats, Bulgarian split squats, or goblet squats, can target specific muscles and provide a fresh stimulus for growth. Additionally, implementing progression techniques such as increasing weights, repetitions, or sets can help you make steady progress in your leg development journey.

By varying the types of squats you perform and progressively increasing the intensity, you can continue to challenge and stimulate your leg muscles. Research suggests incorporating varied squat exercises can lead to comprehensive leg muscle development.

Training Programs for Leg Muscle Growth

To optimize leg development, it’s important to design a well-rounded training program that includes a variety of leg exercises alongside squats. A sample leg workout routine could include exercises like lunges, deadlifts, leg presses, and calf raises, complementing the benefits of squats. Balancing different exercises allows for comprehensive leg development, targeting all major muscle groups.

Several scientific studies have examined the impact of resistance training programs on leg muscle development. One study demonstrated that higher training volumes, such as multiple sets of squats, were associated with greater strength gains. Various leg exercises alongside squats can enhance muscle growth and overall leg development.

Common Mistakes and Injury Prevention

While squats can be highly beneficial, performing them incorrectly can lead to injuries and hinder progress. Common mistakes include improper form, excessive weight, and neglecting warm-up exercises. Maintaining proper posture, engaging the core, and controlling the movement are important. Gradually increasing weights and incorporating warm-up exercises help minimize the risk of injuries and optimize squat performance.

Proper squat form is crucial for maximizing benefits and minimizing the risk of injury. Several scientific studies have emphasized the importance of correct squat technique and warm-up exercises to prevent injuries during squatting exercises.

Leg Myths Debunked

Several myths surrounding leg training and squats need to be addressed. One common misconception is that squats alone are enough to achieve significant leg growth. The hamstrings and plantarflexors tend not to increase with squat training. Thus, if the aim is to increase the size of these muscles, it is necessary to add exercises that target them, such as leg curls and calf raises. (Maeo et al., 2021; Nunes et al., 2020)

While squats are undoubtedly effective, a well-rounded leg training program incorporating various exercises is essential for balanced development. Incorporating other leg exercises, such as lunges, deadlifts, and leg presses, can provide a comprehensive approach to leg muscle development.

Squats can be performed in different ways concerning the barbell position (e.g., high-bar, low-bar, or front-bar), stance width (e.g., narrow or sumo squat), apparatus (e.g., sissy, hack, v-squat, belt, or Smith machines), and others (e.g., single-leg squat or Bulgarian squat). Some recent studies have observed that varying exercise selection throughout training sessions may promote slightly greater hypertrophic responses (Costa et al., 2021; Fonseca et al., 2014) and perceived motivation (Baz-Valle et al., 2019) compared with fixed or non-varying exercise selection conditions.


In conclusion, scientific research supports the effectiveness of squats in targeting specific leg muscles and promoting muscle growth. By incorporating squats into your leg training routine and performing them with proper form and depth, you can maximize the development of your quadriceps, hamstrings, and glutes. Additionally, incorporating variations, progressing in intensity, and following a well-balanced training program are essential for comprehensive leg development. Remember to prioritize proper nutrition and sufficient rest and recovery to support muscle growth and optimize your leg development journey.


Is there any way to increase my leg size other than doing squats, such as: Leg extensions, Kettlebell squats, leg curls, and lunges?

Yes, there are other exercises that can help increase leg size besides squats. Leg extensions, leg curls, and lunges are all great exercises that target different muscles in the legs and can contribute to leg growth when performed consistently and with proper form.

Can I get a bigger booty without doing lots of squats?

Yes, hip thrusts are a great alternative to squats for glute growth.

Is Squats glutes vs quads Exercise?

When it comes to squats, they are a versatile exercise that targets multiple muscles in the legs, including the glutes and quads. However, the extent to which squats specifically target these muscle groups can vary depending on certain factors.

During a squat, your glutes play a significant role in providing stability and power during the movement. By performing squats with proper depth and form, you can effectively engage and activate your glute muscles, which can contribute to glute development over time. Deeper squats are recommended for glute hypertrophy, whereas optimal quad hypertrophy occurs at 90 degrees.


Baz-Valle, E., Schoenfeld, B. J., Torres-Unda, J., Santos-Concejero, J., & Balsalobre-Fernández, C. (2019). The effects of exercise variation in muscle thickness, maximal strength, and motivation in resistance trained men. PLoS One, 14(12), e0226989.

Costa, B. D. V., Kassiano, W., Nunes, J. P., Kunevaliki, G., Castro, E. S. P., Rodacki, A., Cyrino, L. T., Cyrino, E. S., & Fortes, L. S. (2021). Does Performing Different Resistance Exercises for the Same Muscle Group Induce Non-homogeneous Hypertrophy? Int J Sports Med, 42(9), 803-811.

Escamilla, R. F., Fleisig, G. S., Zheng, N., Lander, J. E., Barrentine, S. W., Andrews, J. R., Bergemann, B. W., & Moorman, C. T., 3rd. (2001). Effects of technique variations on knee biomechanics during the squat and leg press. Med Sci Sports Exerc, 33(9), 1552-1566.

Fonseca, R. M., Roschel, H., Tricoli, V., de Souza, E. O., Wilson, J. M., Laurentino, G. C., Aihara, A. Y., de Souza Leão, A. R., & Ugrinowitsch, C. (2014). Changes in Exercises Are More Effective Than in Loading Schemes to Improve Muscle Strength. The Journal of Strength & Conditioning Research, 28(11), 3085-3092.


Illera-Domínguez, V., Nuell, S., Carmona, G., Padullés, J. M., Padullés, X., Lloret, M., Cussó, R., Alomar, X., & Cadefau, J. A. (2018). Early Functional and Morphological Muscle Adaptations During Short-Term Inertial-Squat Training. Front Physiol, 9, 1265.

Kassiano, W., Costa, B., Nunes, J. P., Ribeiro, A. S., Schoenfeld, B. J., & Cyrino, E. S. (2023). Which ROMs Lead to Rome? A Systematic Review of the Effects of Range of Motion on Muscle Hypertrophy. The Journal of Strength and Conditioning Research.

Krzysztofik, M., Wilk, M., Wojdała, G., & Gołaś, A. (2019). Maximizing Muscle Hypertrophy: A Systematic Review of Advanced Resistance Training Techniques and Methods. Int J Environ Res Public Health, 16(24).

Kubo, K., Ikebukuro, T., & Yata, H. (2019). Effects of squat training with different depths on lower limb muscle volumes. Eur J Appl Physiol, 119(9), 1933-1942.


Maeo, S., Huang, M., Wu, Y., Sakurai, H., Kusagawa, Y., Sugiyama, T., Kanehisa, H., & Isaka, T. (2021). Greater Hamstrings Muscle Hypertrophy but Similar Damage Protection after Training at Long versus Short Muscle Lengths. Med Sci Sports Exerc, 53(4), 825-837.

Nakamura, M., Ikezu, H., Sato, S., Yahata, K., Kiyono, R., Yoshida, R., Takeuchi, K., & Nunes, J. P. (2021). Effects of Adding Inter-Set Static Stretching to Flywheel Resistance Training on Flexibility, Muscular Strength, and Regional Hypertrophy in Young Men. Int J Environ Res Public Health, 18(7).

Neto, W. K., Soares, E. G., Vieira, T. L., Aguiar, R., Chola, T. A., Sampaio, V. L., & Gama, E. F. (2020). Gluteus Maximus Activation during Common Strength and Hypertrophy Exercises: A Systematic Review. J Sports Sci Med, 19(1), 195-203.

Nunes, J. P., Costa, B. D. V., Kassiano, W., Kunevaliki, G., Castro, E. S. P., Rodacki, A. L. F., Fortes, L. S., & Cyrino, E. S. (2020). Different Foot Positioning During Calf Training to Induce Portion-Specific Gastrocnemius Muscle Hypertrophy. J Strength Cond Res, 34(8), 2347-2351.

Pareja-Blanco, F., Rodríguez-Rosell, D., Sánchez-Medina, L., Sanchis-Moysi, J., Dorado, C., Mora-Custodio, R., Yáñez-García, J. M., Morales-Alamo, D., Pérez-Suárez, I., Calbet, J. A. L., & González-Badillo, J. J. (2017). Effects of velocity loss during resistance training on athletic performance, strength gains and muscle adaptations. Scand J Med Sci Sports, 27(7), 724-735.


Ribeiro, A. S., Santos, E. D., Nunes, J. P., Nascimento, M. A., Graça, Á., Bezerra, E. S., & Mayhew, J. L. (2023). A Brief Review on the Effects of the Squat Exercise on Lower-Limb Muscle Hypertrophy. Strength & Conditioning Journal, 45(1), 58-66.

Schoenfeld, B. J. (2010). Squatting kinematics and kinetics and their application to exercise performance. J Strength Cond Res, 24(12), 3497-3506.

Weiss, L. W., Coney, H. D., & Clark, F. C. (2000). Gross measures of exercise-induced muscular hypertrophy. J Orthop Sports Phys Ther, 30(3), 143-148.

Zabaleta-Korta, A., Fernández-Peña, E., Torres-Unda, J., Garbisu-Hualde, A., & Santos-Concejero, J. (2021). The Role of Exercise Selection in Regional Muscle Hypertrophy: A Randomized Controlled Trial. Journal of Sports Sciences.

Additional Information

Squats are a staple exercise in strength training, revered by powerlifters, Olympic weightlifters, and fitness enthusiasts alike. They are a starting point for anyone looking to build big legs and a strong lower back. But do squats really increase the size of your thighs? How does your body type, such as being a mesomorph or endomorph, factor into this? Let’s delve into these questions.

Squats are a compound exercise, meaning they work multiple muscle groups at once. This includes your quadriceps glutes (or booty, as it’s colloquially known), and abs. The musculature of your lower body is significantly engaged during this exercise, which can increase the size of your thighs and overall leg growth.

The number of reps and the weight you use during your squats can significantly influence your results. Lifting heavy weights for fewer reps is a common strategy among powerlifters and those looking to increase their leg size. On the other hand, performing more reps with lighter weight can help in toning the muscles for lean legs.

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Your body type can also play a role in how your body responds to squats. Mesomorphs naturally have a muscular build and may see quicker muscle growth and fat loss. Endomorphs, who tend to carry more body fat, may need to focus more on weight loss strategies, such as incorporating more calorie-burning exercises into their routine.

Squats are not just limited to the traditional barbell back squat. Dumbbells and kettlebells can be used to perform variations of squats, such as goblet squats or sumo squats. These variations can target different areas of your legs and can be a great way to add variety to your weight training routine.

However, it’s important to remember that squats can help reduce body fat, but they cannot spot-reduce fat from your thighs. Weight loss occurs uniformly across the body. Therefore, a comprehensive fitness routine and a balanced diet are crucial for overall body fat reduction.

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Lastly, personal preference and comfort should always be considered. If squats cause discomfort or pain, other exercises, like the bench press for upper body strength or lunges for lower body strength, can be incorporated into your routine.

In conclusion, squats can be powerful for leg growth, weight loss, and overall strength training. Whether you’re looking to increase the size of your thighs, reduce body fat, or just improve your overall fitness, squats can be a beneficial addition to your workout routine. However, remember that everyone’s body responds differently to exercise, and what works best for you will depend on your individual goals, body type, and personal preference.

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