Reviews Gym Equipment Gym Machines

7 Best Leg Extension Machines In 2024

Reviewed by: Oleksiy Torokhtiy (21 years of Oly Lifting experience)

Looking for the best leg extension machine to level up your leg game? Look no further! I’ve been on an epic quest for the best one, and I’m here to share my findings with you.

In this article, I’ll dive deep into the world of leg extension machines (sometimes it’s also called a hamstring extension machine), exploring the top contenders that will leave your quads quivering with delight. So, gear up and get ready to discover the ultimate machine that will take your leg workouts to heroic heights.

From sculpting powerful quads to building bionic strength, I’ve got you covered. Prepare to unleash the beast within and dominate the leg extension game like never before. Let’s find the best leg extension machine that will have you shouting, “Leg day? More like leg slay!”

A total of 27 leg extension machines were thoroughly tested by our team of coaches, professional athletes, and certified experts, and they came up with a list of 7 excellent ones!

The leg extension machines were carefully tested and compared over 6 of the most important criteria and our team spent over 500 hours testing most of them.

Along with the meticulous testing, we’ve also analyzed hundreds of online user reviews to bring you the most accurate, up-to-date information. We’re constantly updating this list, so feel free to leave a comment or two and share your experiences in the comment section!

Let’s start those extensions!

Best Leg Extension Machines

Top 7 Best Leg Extension Machines Reviewed

  1. Titan Fitness Leg Extension and Curl Machine V2 – Top Pick
  2. Marcy Adjustable 6 Position Utility Bench – Runner-Up
  3. XMark Leg Exercise Machine
  4. HARISON Adjustable Weight Bench with Leg Extension and Preacher Pad
  5. Merax Adjustable Leg Extension Machine
  6. SPART Leg Extension and Leg Curl Machine – Budget Pick
  7. ANYTHING SPORTS Heavy Duty Adjustable Leg Extension and Curl Machine
Titan Fitness59.510101010109.5
Anything Sports50.588.59889

1. Titan Fitness Leg Extension and Curl Machine V2

Titan Fitness Leg Extension and Curl Machine V2
  • Item weight: 108 lbs
  • Backrest Adjustability: 7 seat depth positions and 3 seat angle positions
  • Material: 11-Ga. Steel (frame) and HeftyGrip Vinyl (upholstery)
  • Weight Limit: 300 lbs
  • Item Dimensions LxWxH: 36’’ x 42’’ x 39’’
  • Warranty: 1-Year

The Titan Fitness Leg Extension and Curl Machine V2, my new home gym BFF. This machine is a two-in-one powerhouse that allows you to perform both leg curls and leg extensions from a seated position.

The adjustable thigh pad design is a game-changer, making it super easy to get in and out of the machine with efficiency.

One of the things I love about this machine is the adjustable seat depth and angle positions, which cater to athletes of all sizes, so I don’t have to worry about awkwardly adjusting and fumbling around to find the right fit.

The rotary leg clamp mechanism and pop pins make adjusting the settings to my desired position a breeze. The full range of motion this machine provides ensures a challenging and effective workout every time.

Switching from leg curls to leg extensions is super easy, thanks to the convenient weight post-flip feature. It’s like having two machines in one!

Crafted with a sturdy rotary leg clamp mechanism, this machine locks your thighs in place, allowing for secure and stable reps. And let’s not forget the foot roller starting position, which can be easily adjusted to accommodate different leg lengths.

Overall, this plate-loaded leg extension curl machine is a winner in my book, but it does come with some disadvantages.

The thing that I found underwhelming is the weight capacity at 300 lbs, it holds much less than some of the cheaper machines on the list. I can also see the price being bothersome, but keep in mind that this is a top-quality machine that will last you very long and give you the best home workout experience.


The Titan Fitness Leg Extension and Curl Machine V2 is a versatile and durable home gym equipment for leg curls and extensions, offering adjustable settings and a sturdy design for a satisfying workout experience.

Value for Money:0


  • Super easy to switch from curls to extensions
  • Accommodates athletes of all sizes
  • High-quality materials
  • Highly adjustable
  • 2nd most compact machine on this list; great for small places
  • The product weight of 108 lbs makes it stand solid regardless of the workout performed

Could be better:

  • Second most expensive leg extension machine on this list
  • Only 300 lbs weight capacity is tied for the lowest on this list

2. Marcy Adjustable 6 Position Utility Bench

Marcy Adjustable Bench
  • Item weight: 48.4 lbs
  • Backrest Adjustability: The back adjusts from incline to flat to decline (76 degrees, 54 degrees, 38 degrees, 21 degrees 0 degrees, and -27 degrees)
  • Material: 600 lbs
  • Weight Limit: 300 lbs
  • Item Dimensions LxWxH: 64.5’’ x 23’’ x 42’’
  • Warranty: 2-Year limited warranty

To say that the Marcy Adjustable 6 Position Utility Bench is impressive would be the understatement of the century, it’s a real heavyweight in the world of utility benches! Our runner-up offers some impressive features and is great value for your money.

Despite being incredibly light at just 48.4 lbs, this seated leg extension machine packs a punch with its impressive maximum weight capacity of 600 lbs. I don't have to worry about the weight of my equipment and can easily use whatever weights I want with it.

One thing that really stood out to me immediately upon receiving it is how easy it is to move this bench around. With the built-in wheels, I can effortlessly roll it from one spot to another without breaking a sweat.

And when I'm done with my workout, the foldable design makes it simple to store away, saving precious space in my home gym.

The 6 back bench positions offer a wide range of options for targeting different muscle groups and adjusting the intensity of my exercises and I particularly enjoy the height-adjustable seat.

As someone who has tried quite a few machines, I would like to see a tiny bit more versatility with adjusting the bench positions and the seat angle, but for the price, you really can’t complain. This leads me to my next point - the price! Wow!

You get fantastic value for your money with this bench. Not only is it light, easily moveable, and can withstand an impressive amount of weight, it’s less than half the price of some of the higher-end models. If you’re looking for a high-quality machine that won’t break the bank, this is the one for you!


The Marcy Adjustable 6 Position Utility Bench is a versatile and affordable home gym equipment with a high weight capacity, making it a top choice for quality workouts on a budget.

Value for Money:0


  • Very light at only 48.4 lbs
  • High weight capacity
  • Easy to move around and store
  • Most affordable piece of equipment on this list
  • 2 years is the highest warranty provided compared to others on this list

Could be better:

  • Not as versatile as some of the higher-end models
  • Rather big and might not fit smaller spaces

3. XMark XM-7615 Leg Exercise Machine

XMark XM-7615 Machine
  • Item weight: 136 lbs
  • Backrest Adjustability: Fully adjustable 8-position backrest pad
  • Material: Steel and Vinyl
  • Weight Limit: 500 lbs
  • Item Dimensions LxWxH: 55.75’’ x 45.5’’ x 41’
  • Warranty: Lifetime for the frame, 1-year parts

Upon seeing the specs of the XMark Leg Exercise Machine, my expectations were high. The level of versatility immediately caught my attention, and I knew that this was something I just had to try out. 

First off, the XM-7615 is built like a tank. The 2-gauge heavy-duty mainframe construction gives it a sturdy and durable feel, and the baked scratch-resistant powder coat finish ensures it will stand the test of time.

One of the standout features is the 12-position vertically adjustable thigh pads, allowing for a customizable fit that accommodates users of various sizes. The 20-position adjustable press arm is also a nice touch, ensuring I could find the perfect position for my leg length.

While the machine offers excellent stability with its rear weight post, the comfort level left something to be desired. The extra-thick Duraguard vinyl cushions and pads are tear-resistant, but I found them less comfortable compared to some other machines on the market.

Including standard (1 inch) and Olympic (2 inches) weight plate compatibility is a nice feature, allowing versatility in my workout routine. The oversized thigh pads with chrome end caps provide adequate support, and the rubber grip handlebars with molded finger grips enhance the overall usability.

However, it's worth noting that this machine comes with a higher price tag than other options. While it offers solid construction and functionality, the comfort factor may only meet some people's expectations.

The XM-7615 Leg Exercise Machine with Rotary Leg Extension and Leg Curl is a robust and versatile piece of equipment. While it may not be the most comfortable option, its durability and adjustability make it a viable choice for serious leg workouts.


The XMark Leg Exercise Machine (XM-7615) combines durability, adjustability, and versatility, making it a solid choice for intense leg workouts, although it may not provide the same level of comfort as some other machines in its price range.

Value for Money:0


  • Very versatile
  • High-quality
  • Durable
  • The machine is the heaviest on this list thus providing stability and sturdiness during workouts
  • Molded finger grips are very user-friendly
  • You get a lifetime guarantee for the frame

Could be better:

  • Most expensive leg extension machine on this list
  • Not very comfortable

4. HARISON Adjustable Weight Bench with Leg Extension and Preacher Pad

HARISON Adjustable Weight Bench
  • Item weight: 51 lbs
  • Backrest Adjustability: 6 backrest pad positions (from 90 degrees to 210 degrees)
  • Material: Vinyl, Foam, Alloy Steel
  • Weight Limit: 800 lbs
  • Item Dimensions LxWxH: 68’’ x 23’’ x 55.12’’
  • Warranty: 1-Year after completing product registration

Next up, we have the Harison Adjustable Weight Bench with Leg Extension and Preacher Pad. If the previous machines in this article did not catch your attention, you'd be intrigued by the specs this one offers.

First and foremost, this leg curl and extension machine offers a fully adjustable and multi-purpose design that caters to various workout needs.

Whether you're focusing on your chest, legs, or arms, this bench has got you covered. The weight capacity of 800 lbs is awe-inspiring and gives me peace of mind during intense workouts.

Assembly was a breeze since most of the benches came pre-assembled. It only required attaching the front support tube and foam rollers, which took just a few minutes.

The heavy-duty steel construction and triangular mechanical support design instilled confidence in the bench's stability and durability.

The high-density foam padding and seat provided excellent comfort, and I appreciated the 65mm thickened backrest and 5 layers of leather foam panel for added support during workouts.

The bench passed various weight tests with flying colors and proved rustproof, ensuring safety and longevity.

However, one drawback I found was the inconvenience of adjusting the bench's inclination angle. Each time you want to change the angle, you must unscrew the lock and then screw it back in, which can be time-consuming. Other equipment I've seen offers a slider-type mechanism that allows for quick angle adjustments.

In conclusion, the HARISON Adjustable Weight Bench with Leg Extension and Preacher Pad is a solid choice for those seeking a versatile and robust workout bench.

While the inconvenience of adjusting the inclination angle may be a downside, the overall durability, comfort, and impressive weight capacity make it a reliable option for various exercises.


The HARISON Adjustable Weight Bench with Leg Extension and Preacher Pad is a versatile and durable workout bench with a high weight capacity, ideal for a variety of exercises.

Value for Money:0


  • Easy and quick to assemble
  • Densely padded and comfortable
  • The biggest weight capacity on this list
  • Easy to transport

Could be better:

  • Adjusting the inclination angle is inconvenient and time-consuming
  • The machine is very light and might twitch or move if the workout is strainful
  • This one is the biggest leg extension machine on the list

5. Merax MS-0290 Adjustable Leg Extension Machine

Merax MS-0290 Machine
  • Item weight: 90 lbs
  • Backrest Adjustability: 7 positions
  • Material: Steel
  • Weight Limit: 300 lbs max plate load and 350 lbs max user
  • Item Dimensions LxWxH: 39.4” x 34.3” x 39.4”
  • Warranty: 1 Year

Having had the opportunity to try out the Merax Adjustable Leg Extension machine, let me explain why I think it’s a great option for anyone looking to buy gym equipment while on a budget.

First off, one of the standout features of the MS-0290 is its affordability and compact design. It's an excellent option for those with limited space, measuring 39.4" x 34.3" x 39.4". Before I even tried it, I thought it would be a great home gym leg extension machine simply due to its size.

The adjustable backrest in 7 positions and the adjustable and removable thigh holder in 9 positions provide flexibility and allow for customization to suit your individual needs.

Additionally, the compatibility with standard weight and Olympic plates (with the included 2" adapter) adds versatility to your workout options. The non-slip rubber feet ensure stability during your exercises.

While the weight limit of 350 lbs for the user and 300 lbs for the plates seems impressive, I've noticed that the machine squeaks a bit with weights over 100 lbs. But proper lubrication solves it. It doesn't handle heavier loads as smoothly as expected, which can be a drawback for those seeking to lift heavier weights.

On the positive side, the padding on the seat and shin bar is comfortable, allowing for a more enjoyable workout experience.

To sum it up, the Merax Adjustable Leg Extension Machine is an affordable and compact option for leg exercises. It offers adjustable features and compatibility with different weight plates. However, there may be better choices if you plan to lift weights over 100 lbs, as it tends to struggle.

Nonetheless, if you're looking for a budget-friendly machine for moderate leg workouts, the MS-0290 leg extension machine can provide a comfortable and efficient training session.


The Merax Adjustable Leg Extension Machine (MS-0290) is a budget-friendly and compact option for leg exercises, providing adjustable features and compatibility with different weight plates, but it may not be suitable for heavier loads.

Value for Money:0


  • Comfortable padding
  • The most compact machine on this list
  • Affordable price point

Could be better:

  • Might squawk a bit while handling weights over 100 lbs
  • Tied for lowest maximum weight capacity
Budget Pick

6. SPART Leg Extension and Leg Curl Machine

SPART Leg Extension Machine
  • Item weight: 74.7 lbs (package)
  • Backrest Adjustability: 8 position-adjustable pads
  • Material: Steel
  • Weight Limit: 660 lbs
  • Item Dimensions LxWxH: 63.8’’ x 42.5’’ x 40.6’’
  • Warranty: 1 Year

Our next competitor took me by surprise. I must admit, I did not expect much from such an affordable machine, but it left me quite content.

First, this machine stands out as our budget pick, offering a combination of leg extension, leg curl, and glute bridge exercises to target your lower body and break through plateaus in your squat and deadlift routines.

Developing strong hamstrings and quadriceps is essential for balance, speed, and coordination, and this machine focuses on isolating those muscles while providing a full range of motion.

Constructed with a 50x50 mm, 14-gauge tube, this commercial-grade leg extension and curl machine can withstand heavy workouts. The impressive weight capacity of 660 lbs ensures its durability and stability during intense sessions.

One of the key features of this machine is its adjustability. The 8-position adjustable 3-inch-thick backrest pads, 32-position adjustable rotary leg extension, and 6-position removable and adjustable leg pads allow for customization based on your individual needs and preferences.

The addition of the weight storage pin not only makes it convenient to pick up plates but also enhances the overall stability of the machine. It can accommodate both 1" and 2" weight plates, adding versatility.

The SPART Leg Extension and Leg Curl Machine has taken into consideration user comfort and support. The increased edges of the cushions provide a thicker curvature, especially suitable for leg curl and extension exercises, offering better support and helping you strive towards higher goals.

The oversize rollers effectively work your quad muscles during leg extension exercises, while the thick padding ensures exceptional comfort and durability.

However, I did notice a couple of minor drawbacks during my usage. The tibia bar is relatively short, which may not be ideal for individuals with longer legs. Additionally, the cushioning could be more evenly distributed so that it does not require adjustment to find the most comfortable position.

The SPART Adjustable Leg Extension and Leg Curl Machine is a solid budget-friendly leg extension machine for home that targets key lower body muscles. Its sturdy construction, adjustable features, and weight capacity suit various workout intensities.

While some minor comfort considerations remain, it remains a reliable choice for individuals looking to strengthen their hamstrings and quadriceps without their wallets taking a hit.


The SPART Adjustable Leg Extension and Leg Curl Machine is a budget-friendly option for targeting lower body muscles, with sturdy construction and adjustable features, although some minor comfort considerations remain.

Value for Money:0


  • Highly adjustable
  • The weight limit of 660 lbs is not the highest, but is still very impressive
  • Easy to pick up plates due to the addition of the weight storage pin
  • Best value for money

Could be better:

  • Short tibia bar makes it less than ideal for people with long legs
  • The machine is quite spacey

7. ANYTHING SPORTS Heavy Duty Adjustable Leg Extension and Curl Machine

  • Item weight: 99.9 lbs (package)
  • Backrest Adjustability: 90 degrees (upright) to 0 degrees (flat bench)
  • Material: Steel
  • Weight Limit: 500 lbs
  • Item Dimensions LxWxH: 46.5" x 31" x 8"
  • Warranty: 1 Year

Although our list has come to an end, I do have one more good quad extension machine to present to you. While I may prefer others to this, it still deserves to be taken into consideration when talking about the best leg extension equipment.

Let's start with the claims made by the manufacturer. They state that this machine is suitable for users of all heights. While I appreciate the adjustability options, taller individuals might still face some limitations in finding the perfect fit.

The compatibility with both 1 and 2-inch plates is a nice feature, and the adapter adds convenience for users with different weight plate preferences.

With a weight capacity of 500 lbs, this machine is undeniably sturdy and can handle heavy loads during your workouts. The 1-year warranty is also a reassuring aspect for potential buyers.

The price is one of the main downsides of the ANYTHING SPORTS Leg Extension and Curl Machine. Considering what it offers, it may be too expensive compared to similar options on the market.

The claim of providing a full range of motion is partially valid. The leg extension motion allows for a full range of movement, ensuring effective targeting of the quadriceps. However, when it comes to leg curls, the range of motion was somewhat limited and I noticed my hamstrings did not receive the level of engagement I wanted.

On the positive side, this machine is a solid addition to any home gym equipment collection. The comfortable padding and high-quality material used for the pads contribute to a pleasant workout experience. You can expect decent support and durability during leg extension and curl exercises.

In summary, the ANYTHING SPORTS Heavy Duty Adjustable Leg Extension and Curl Machine offers commendable features such as weight compatibility, sturdiness, and comfortable padding.

However, the price may be a deterrent for some, and the limited range of motion for leg curls could be a drawback for those specifically targeting their hamstrings. Ultimately, it's a decent option, but it's essential to consider your specific needs and budget before purchasing.


The ANYTHING SPORTS Heavy Duty Adjustable Leg Extension and Curl Machine offers weight compatibility, sturdiness, and comfortable padding, but the price may be a deterrent and the range of motion for leg curls is limited.

Value for Money:0


  • Comes with the adapter for 1’’ and 2’’ plates
  • Comfortable cushions and quality material
  • Can hold up to 500 lbs, which is pretty solid

Could be better:

  • Quite expensive considering what it offers
  • Can be used with 1-inch weight plates only
  • Not very convenient for taller individuals


The latest reviews of must-have home gym training equipment, apparel, and supplements that will enhance your performance and bring you new results.

Leg Extension Machine - What You Need to Know

Leg extension machines are popular equipment found in many gyms, offering targeted exercises for the lower body. These machines typically have a seat, backrest, and leg extension mechanism.

The leg extension exercise is known as an open kinetic chain exercise or OKC.

Open kinetic chain workouts target particular joints and muscles. These workouts may isolate weak or damaged muscles. They may not represent functional movement patterns and may stress joints. Leg extensions, hamstring curls, and standing hip abductions/adductions are examples of OKCs.

Closed kinetic chain workouts mimic everyday motions by coordinating many muscle groups and joints. Functional exercises help stabilize and strengthen the kinetic chain. Sports-specific training and functional rehabilitation employ them. Squats, lunges, and step-ups are CKCs.

Here are some general characteristics, pros, and cons of leg extension machines and the muscles they primarily engage.

They provide a focused workout for the quadriceps, the muscles at the front of the thigh. They allow for the isolation of the quadriceps, helping to build strength, muscular endurance, and definition in this area.

They're relatively easy to use, making them suitable for beginners or those recovering from injuries. They also offer adjustable resistance to accommodate various fitness levels.

athlete leg extension training

One limitation of leg extension machines is that they primarily target the quadriceps and don't engage other major lower body muscles like the hamstrings and glutes as effectively.

Additionally, the seated position in these machines doesn't involve the core muscles that much or require stabilization, which limits the overall functional benefit.

Combining the benefits of leg extension exercises with other lower body exercises targeting different muscle groups is recommended to maximize the benefits. This ensures overall muscular balance and functional strength.

To get the most out of a leg extension exercise, make sure your knees don't lock while they're at full extension and that you come back to the beginning position completely. Maintain a steady, controlled pace.

Remember, as with any exercise, it's essential to use proper form, start with lighter weights, and gradually increase resistance as you gain strength. Consulting with a fitness professional can help tailor a workout program that suits your needs and goals.

Why You Need a Leg Extension Machine

While using a leg extension machine may not be necessary for everyone, there are several compelling reasons why you might consider adding one to your home gym or incorporating it into your fitness routine.

✅ Quadriceps Strength

Leg extension machines specifically target the quadriceps muscles, helping to build strength, size, and definition in the front of your thighs. Focusing on this muscle group can enhance your leg power, improve athletic performance, and even improve your overall lower body aesthetics.

Based on the results of a research study published in the Journal of Mechanics in Medicine and Biology, controlling the degree of knee flexion during isometric knee extensions done on a leg extension machine is an excellent place to start if you want to improve your vastus medialis oblique (VMO), and vastus lateralis (VL) muscles.

leg extension workout

✅ Injury Rehabilitation

Leg extension machines are often used in physical therapy to aid injury rehabilitation. They provide controlled movements and adjustable resistance, allowing for targeted quadriceps strengthening while minimizing stress on other joints and muscles.

Ann-Katrin Stensdotter's research involves open kinetic chain(OKC) and closed kinetic chain(CKC) exercises done by the legs. The results may favor closed kinetic chain exercises if rehabilitation is in mind, but open kinetic chain exercises such as leg extensions are still beneficial.

✅ Convenience and Accessibility

A leg extension machine at home allows you to target your quads whenever you want without relying on gym availability or waiting for a machine. It's a time-efficient option for incorporating lower-body exercises into your fitness routine.

Tips From the Champ

While using a leg extension machine may not be necessary for everyone, there are several compelling reasons why you might consider adding one to your home gym or incorporating it into your fitness routine.

Oleksiy Torokhtiy
Oleksiy Torokhtiy

Olympic Weightlifting Champion

✅ Adjustable Resistance

Leg extension machines typically feature adjustable resistance settings, allowing you to increase or decrease the load as needed. This adaptability benefits both beginners and advanced users, as it enables gradual progression and caters to different fitness levels.

✅ Variety in Leg Training

While compound exercises like squats and lunges engage multiple muscle groups, the leg extension machine offers a different training stimulus by directly targeting the quadriceps. Incorporating leg extension exercises into your routine can add variety and challenge to your leg workouts.

✅ Improved Memory Retention

The research conducted by the Georgia Institute Of Technology suggests that substantial time investment is unnecessary to get cognitive benefits. Simple activities may improve memory recall.

Leg extensions were used in the study to prove how memory retention can be increased by 20% in people who were exercising, compared to people who weren’t.

leg extension review

How to Properly Use a Leg Extension Machine

Using a leg extension machine properly is important to ensure safety and maximize the benefits of the exercise.

Adjust the seat height so that your knees align with the pivot point. This will allow for proper alignment and range of motion. Then, position yourself - sit on the machine with your back firmly against the backrest and your feet flat on the foot pad.

Make sure your thighs are snug against the leg pads. Now it's time to engage your core by gently bracing your abdominal muscles. This will help stabilize your body throughout the exercise.

Grasp the handles or sidebars for support and maintain an upright posture. Keep your back straight and avoid rounding your shoulders. Slowly straighten your legs by pushing against the foot pad. Focus on contracting your quadriceps (front thigh muscles) as you extend your legs fully.

Pause briefly at the top of the movement, ensuring your legs are fully extended. Avoid locking your knees and maintain tension in your muscles.

Slowly lower the weight back to the starting position, maintaining control throughout the descent. Perform the desired number of repetitions while maintaining proper form and control.

leg extension exercise

Also, regarding what weight you should be working with, it is vital to choose an appropriate load based on your muscle condition and any possible injury.

While future intelligent exercise machines will automatically adjust the machine's weight by relying on electromyography sensors, depending on the factors mentioned earlier, it is essential to remember that we, the users, currently have that responsibility.

Another finding by T. K. Evetovich shows that the mechanomyographic signal of mean power frequency, assessed from the vastus lateralis, was not responsive to training-induced improvements in leg-extension strength when peak torque was increased, potentially owing to conflicting impacts of hypertrophy on the MMG signal and/or training-induced adaptations in other muscle.

It's essential to listen to your body and avoid any jerking or swinging motions. If you experience pain or discomfort, stop the exercise and consult a fitness professional or healthcare provider.

leg extension athlete


Is It Worth Buying A Leg Extension Machine?

It absolutely is. A leg extension machine is a valuable addition to a home gym and even though it is more expensive, it is superior to simply relying on elastic bands in terms of benefits and results.

The leg machine provides targeted quadriceps training, safety, convenience, and the ability to progress in workouts.

Leg extension machines that were modified to extract only concentric contractions that have a safety mechanism to prevent the weights from free-drop once released, 1RM measurement for knee extension exhibited good reliability and safety.

It provides a controlled and stable environment, precise adjustment of resistance, convenience and versatility, and progressive overload. It also eliminates the need to visit a gym.

Are All Leg Extension Machines The Same?

No, not all leg extension machines are the same. Different leg extension machines can vary in design, features, build quality, adjustability, and overall functionality.

Some leg extension machines even offer stimulation in the form of vibrations, but a study done by CEMAFE Sao Paolo shows that the vibrating platform has no beneficial effect on the leg extension exercise. It also shows how the vibrations have negative effects on muscle fatigue.

So, I would not recommend investing in these as they would be more expensive without any real-world benefits for your overall fitness.

Is Using Leg Exercise Machines Dangerous?

There isn't any research that supports such claims. Leg extension machines are safe as any other form of exercise. In fact, almost any kind of physical activity is safe and acceptable, but only when prescribed appropriately.

Is Leg Extension Better Than Squats?

There’s no yes or no answer to this question because leg extensions and squats are different exercises that target different muscle groups. Squats engage multiple muscles, while leg extensions specifically target the quadriceps.

The choice between leg extensions and squats depends on fitness goals, personal preferences, and any existing limitations or injuries. Consultation with a fitness professional can help determine the best exercises for specific needs and goals.

Research done by L. J. Cannell suggests that most individuals with jumper's knee may return to sports after 12 weeks of progressive drop squats and leg extension/curl exercises.


After thoroughly comparing seven different leg extension machines, the Titan Fitness Leg Extension and Curl Machine V2 emerges as the top pick. Its impressive performance and features make it the highest score on our list.

Even considering the price, it outshines the competition by a wide margin. From its adjustable thigh pad design and overall quality to its full range of motion, this leg extension and curl machine proves to be a superb choice for leg extension exercises.

Whether you're a beginner or an experienced fitness enthusiast, it delivers on its promises.

Have you used any leg extension machines? Do you have a favorite one or any recommendations you want to share with us? Do not hesitate to visit our comment section below! 

Also read:


  1. Leg extension // Wikipedia: wiki/Leg_extension
  2. Open Kinetic Chain Exercise // Sciencedirect: topics/medicine-and-dentistry /open-kinetic-chain-exercise
  3. Closed Kinetic Chain Exercise // Sciencedirect: topics/medicine-and-dentistry/ closed-kinetic-chain-exercise
  4. Vindicating the Leg Extension: How To Build Great Quads Safely With This Bodybuilder's Favorite // Burnthefatinnercircle: /public/Leg-Extension.cfm
  5. Effect of the Combination of Creatine Monohydrate Plus HMB Supplementation on Sports Performance, Body Composition, Markers of Muscle Damage and Hormone Status: A Systematic Review // NIH: healthy-lifestyle/fitness/ multimedia/knee-extension /vid-20084686
  6. Healthy Lifestyle Fitness // Mayoclinic: healthy-lifestyle/fitness/multimedia /knee-extension/vid-20084686
  7. Drop-Set Training Elicits Differential Increases in Non-Uniform Hypertrophy of the Quadriceps in Leg Extension Exercise // MDPI: 2075-4663/9/9/119
  8. Electromyographic analysis of leg extension exercise during different ankle and knee positions // Researchgate: publication/275227054_ Electromyographic_analysis_of_ leg_extension_exercise_during _different_ankle_and_ knee_positions
  9. Quadriceps activation in closed and in open kinetic chain exercise // NIH: /14652500/
  10. SiOWfa15: Science in Our World: Certainty and Controversy // PSU: siowfa15/2015/09/17/ should-the-leg-extension-machine-be-taken-out-of-the-gym/
  11. Lift weights, improve your memory // Eurekalert: news-releases/665146
  12. Exercise Condition Sensing in Smart Leg Extension Machine // MDPI: 1424-8220/22/ 17/6336
  13. Exercise Condition Sensing in Smart Leg Extension Machine // NIH: /36080804/
  14. The effect of leg extension training on the mean power frequency of the mechanomyographic signal // NIH: /10842278/
  15. What is hypertrophy? // Livescience: what-is-hypertrophy
  16. Muscle Activity During Knee‐Extension Strengthening Exercise Performed With Elastic Tubing and Isotonic Resistance // NIH: pmc/articles/ PMC3537465/
  17. Reliability of one repetition maximum measurement for leg extension using an improved leg extension machine // Jstage: article/fmj/4/4/ 4_2018002/_html /-char/en
  18. Acute Effect of Extensors Knee Unilateral On Leg Extension Machine With and Without Stimulation on the Vibrating Platform // Scielo: /j/rbme/a/ TcdgsJnYbj9wDyKvMGYT46z /?lang=en&format=pdf
  19. Are the Seated Leg Extension, Leg Curl, and Adduction Machine Exercises Non-Functional or Risky? // NSCA: education/articles /ptq/are-the-seated-leg-extension-leg-curl-and-adduction-machine-exercises-non-functional-or-risky/
  20. What Muscles Do Squats Work? // Healthline: health/exercise-fitness /what-muscles-do-squats-work
  21. What Muscles Does the Leg Curl/Extension Machine Work? // Livestrong: article/539351-what-muscles-does-the-leg-curl-extension-machine-work/
  22. A randomised clinical trial of the efficacy of drop squats or leg extension/leg curl exercises to treat clinically diagnosed jumper's knee in athletes: pilot study // NIH: 11157465/

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With over 20 years in Olympic Weightlifting, our team does its best to provide the audience with ultimate support and meet the needs and requirements of advanced athletes and professional lifters, as well as people who strive to open new opportunities and develop their physical capabilities with us.

All products we select are primarily approved and tested by the Olympic Weightlifting Champion Oleksii Torokhtiy. Under his guidance, we provide honest and reasonable assessments of the products we review by checking their characteristics, packaging, design, comfort and durability features, and general product rating. We select products from only high-quality and trusted sports brands, thus vouching for their quality.

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Ihor Shymechko

Author: Ihor Shymechko
Pro Olympic Weightlifter, Coach

Experience: 26 years
Best Results: Snatch – 208 kg,
C&J – 240 kg

Ihor has been a professional weightlifter since 1996, boasting over two decades of competition experience. His notable achievements include clinching the European Championship in 2009 and securing a silver medal in the 105kg division at the Senior World Championships in 2011. Ihor represented his country in the 2008, 2012, and 2016 Summer Olympics. After retiring from competitive weightlifting, he transitioned to coaching, leveraging his vast experience to guide athletes who now compete on both national and international stages.

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Oleksiy Torokhtiy

Reviewed by: Oleksiy Torokhtiy
Olympic Weightlifting Champion

Experience: 21 years
Best ResultsSnatch – 200 kg,
C&J – 240 kg

Oleksiy Torokhtiy is a professional athlete boasting 20 years of experience in Olympic weightlifting. With multiple European and World titles under his belt, he has showcased his prowess in two Olympic Games (Beijing 2008 and London 2012). Upon concluding his illustrious career, Oleksiy dedicated himself to coaching. By 2022, he had conducted over 200 weightlifting seminars worldwide. He is the visionary behind an international sportswear and accessories brand known for its motto, “Warm Body Cold Mind.” Additionally, he is an esteemed author and the creator of a series of training programs and eBooks.

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