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Fact Checked
This article was written by one of our team of experienced writers, and fact-checked by our experts or our editors. The numbers in parentheses (e.g., 1, 2, 3, etc.) throughout the article are reference links to peer-reviewed studies.
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Seated Leg Raises: Strengthen Your Hip Flexors and Quads!

Don't neglect to include this classic bodyweight ab exercise variation for a strong and ripped core.

Written by Matthew Magnante, ACE

Last Updated on11 August, 2024 | 5:35 AM EDT

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Some exercises are iffy as to whether they’re effective or not, but seated leg raises will have your abs burning almost immediately. It’s one of those timeless classic moves that you can always fit into your midriff sessions and you’ll never be disappointed. Involving both the upper and lower body to target both ends of your core muscles, seated leg raises require focus and intensity which make them an all-around superior exercise. Plus we like the abundance of variations when you’re ready for a bigger challenge. 

You only need a bench or similar raised platform or do it sitting on the ground. 

Check out our full guide to seated leg raises for form tips, benefits, variations, best sets and reps ranges, and more.

Seated Leg Raises Details
Basic Information
Body Part
Hip flexors
Primary Muscles
Iliopsoas, Quadriceps, Rectus Femoris, Sartorius, Tensor Fasciae Latae
Secondary Muscles
Hip Flexors
Equipment
Chair Or Bench, Mat
Exercise Characteristics
Exercise Type
Strength
Movement Pattern
Brace
Force Type
Concentric
Unilateral/Bilateral
Unilateral
Compound/Isolation
Isolation
Bodyweight Exercise
Yes
Training Parameters
Difficulty Level
Beginner
Target Training Goals
Endurance
Suitable Workout Phases
Main workout
Risk Level
Low
Weight Category
Bodyweight
Recommended Rep Ranges
GoalRep Range
Strength8-12
Hypertrophy8-12
Endurance15-20
Power1-5
Muscular endurance15-20
Stability core15-20
Flexibility mobilityVaries
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  • Transform Your Legs: Master the Barbell Lunge for Strength
  • Kettlebell Sumo Squat: Targeting Key Muscles for Stronger Legs

How To Do Seated Leg Raises 

A straightforward and non-complex exercise, seated leg raises can be learned with a little practice. However, that doesn’t mean they’re easy to do. You’ll need decent core strength to stabilize your spine, protect your back and fully engage the muscles plus you need mobile hips to do it effectively. 

We included step-by-step instructions in detail below to ensure you get the most from this exercise. 

Step 1: The setup

  • Sit at the edge of a bench or similar object. Grip the end or sides of the bench depending on which is more comfortable and ergonomic for you. 

Step 2: Pre-rep preparation 

Pre-rep preparation is an important step before you begin any exercise. This includes cueing proper body positioning and engaging assisting muscles.

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To prep:

  • Sit up straight, tense your core muscles and recline your torso until it’s at a 45-degree angle to the bench. As you lay back, let your legs come up too but still keep them hanging off the end of the bench. 

Step 3: Movement execution

Now that you’re set up and in the right position, you’re ready to do seated leg raises.

  • Crunch your upper and lower body together as far as you comfortably can while maintaining a tense midsection. Squeeze your abs throughout the movement. Lean back and extend your legs forward then repeat for the desired number of repetitions. 

See how it’s done via the following video. 

Pro tip: Fully extend your legs for a great core challenge. 

Benefits

Here are some reasons why seated leg raises can be a great addition to your core routine. 

A classic ab builder 

One of those exercises that’s been around since prehistoric times (not really) and goes far back beyond the days of bodybuilding and fitness legends. Seated leg raises and its variations are still widely used, recommended and programmed by top fitness professionals and trainers.

Trains the entire core 

While seated leg raises mainly hit the abdominal muscles, you’re really getting a complete core workout. That doesn’t mean each muscle is trained equally and you do need to include other movements but outer and deeper core muscles are engaged and activated. 

Perform better at other movements

Many don’t realize that the core muscles have a lot do with lifting performance. You need a solid midriff to support heavy loads during squats, deadlifts, rows, bench presses, and any compound lift. If not, you’d collapse and it’d be hard to stabilize the weight. 

Lower back pain is also many times caused by a less than capable core or you’re just lifting too heavy which is equally not good. Leg raises are one exercises that will increase your core strength and help you to perform better. 

Little to no equipment needed

Whether you use a bench, bed, or nothing at all, there are no limitations of this movement due to needing fancy or expensive exercise equipment. There are many options and variations which means you have no excuses. 

Drawbacks

Here are some of the potential seated leg raise negatives.

Need a bench or similar platform 

To do the version of seated leg raises talked about in this guide, you need a bench of some sort or a type of chair that will work. You can do it on the edge of a bed but there could be a few drawbacks to that. One, you don’t want to be sinking down into the bed so a firmer mattress is ideal, and two, it’s harder to grip the end of a bed due to the thickness and material. It can work though, you just want to maintain proper body positioning and a straight back. 

Need a solid platform for ab training? These are our best sit up bench picks for 2022.

Requires a decently strong core 

If you cannot maintain a straight upper body and rigid midsection, your back will pay for it during the exercise and later on. That’s why it’s good to have a little training experience and decent core strength before doing similar movements. 

Typically, four to six months of dedicated total-body resistance training is enough to build a stronger core and to learn proper exercise form. Then you should be ready to take on seated leg raises and alternatives. 

7 Variations

Seated leg raises are a classic ab exercise that work no doubt, however, at some point, they’ll become less challenging. Here are some awesome variations to mix things up and give yourself a more intense core workout. 

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1. Weighted seated leg raise

A quick and easy way to add more resistance to seated leg raises is to hold a small dumbbell between your ankles. You can also wear a pair of ankle weights too. 

2. Floor leg raise

Performing leg raises on the floor has its advantages and disadvantage. The one drawback is that you don’t have a bench to grab onto, leaving you to focus solely on the technique. However, there are more pros than cons because floor leg raises recruit more stabilizers due to the greater balance requirements. Not to mention, you can do this variation anywhere.

3. Stability ball reverse crunch

While floor leg raises are more challenging than the seated variation, they don’t hold a candle to stability ball leg raises (it’s all in the name). You’re pretty much doing knee raises from an oversized beach ball that wants to roll around which will recruit your entire midsection to stabilize your body. You’ll need something behind your head to grab onto to keep you in place. 

You can also do this variation from a bench or on the ground. 

Here’s a video demonstration of this exercise. Note: Be careful not to let your legs too far down to avoid hyperextending your lower back. 

4. Cocoons

Spread your wings like a butterfly with this core exercise variation named after the protective covering of insects prior to their transition. Cocoons are somewhat similar to seated leg raises in that it involves crunching both ends of your body toward each for maximum core engagement. 

5. V-ups

V-ups err on the side of more advanced ab exercises (although not extreme). You need to be flexible and strong in the joints to do this exercise because the goal is to form a V shape with your body while sitting on your butt. While it primarily targets the ab muscles, V ups simultaneously engage hip flexors and quads too. 

Learn how to do V-ups here. 

6. Seated scissor leg raises

For some extra burn and lower ab muscle activation, perform seated leg raises combined with a scissor leg motion. Alternate crossing one foot over the other in a rapid motion as you lower and raise your legs. 

7. Hanging leg raises 

If you’re serious about your core training then hanging leg raises need to be in your rotation. There’s not a more challenging way to train your abs because there are so many versions of this variation that range from nice and easy to extremely difficult. 

Using different positions combined with the weight of your lower body will create all of the resistance you need to keep challenging yourself.

Programming Seated Leg Raises In Your Ab Workouts 

Seated leg raises and its variations need to have a place in your ab workouts. We’ll show you how we would do it but ultimately, how you program a movement in your training regime depends on your goals and training routine. 

Best way to train abs

The following information explains how we would structure an ab workout based on anatomy and movement difficulty. Just like other muscle groups, it’s best to want to start with the hardest exercises when you have the most strength and energy followed by easier and less energy-draining movements. 

Below is a list of ab exercises in the order that we would perform them. 

  1. Hanging leg raise or similar bodyweight variations – utilize the heavy weight of your legs when you’re freshest and strongest. 
  2. Leg raise with rotation (e.g, ab circles seated on butt) – involve rotation and total body stabilization to hammer the lower abs and obliques.
  3. Rotation/oblique-focused (e.g, Russian twists) 
  4. Bottom and top half (e.g., seated leg raises) – engage both ends of your core.
  5. Top-down (e.g., basic ab crunch, kneeling cable crunch) – load the upper abs 
  6. Planks – challenge your static core strength to finish your core workout

Optimal Sets and Reps 

Keep in mind, it’s not as easy to determine a sets and reps range with bodyweight exercises. That’s because the resistance is fixed. However, abs typically benefit more from a higher rep range. 

  • We recommend 2-3 sets of 12-25 reps for seated leg raises. 

If you need more resistance, try one of the included variations or add a dumbbell between your ankles. 

Abs Circuit Workout: Training and Nutrition Tips for a Six-Pack

Muscles Worked

Below we’ve included brief descriptions of the muscle involved in seated leg raises because It’s helpful to know where to place your focus during any given exercise for best results.

Seated Leg Raise Muscle Worked
Seated Leg Raise Muscle Worked
  • Core/abs – Leg raises are of the best core and ab exercises that you can do. These muscles stand out on the midsection when there’s little body fat and they do give a complete look to a muscular physique. The abdominals and hip flexors help to facilitate this movement of crunching the upper and lower body together. 
  • Iliopsoas – The hip flexors are heavily involved in leg raise variations. Iliopsoas, the primary and strongest hip flexor; consists of a major and minor psoas muscles and iliacus. (2) Having strong, healthy hip flexors allows us to bring the thigh higher than hip level, helping us to maximize the activation of our core muscles. It’s an important muscle for standing, walking and running. So having strong and functional hip flexors is crucial to movement. 

Bottom Line

Few ab exercises offer such a powerful combination of convenience, versatility, and effectiveness as seated leg raises and its variations. You’ll find that most, if not all ab workout routines include them and that’s for good reason, they work! Give seated leg raises a try next time you train your core muscles and take advantage of the more challenging versions to maximize your ab muscles development.

Use this guide to help you program seated leg raises into your core training sessions!

Interested in measuring your progress? Check out our strength standards for Bench Press, Cable Crunch, Deadlift, and more.


If you have any questions about this article, please feel free to contact Matthew Magnante by leaving a comment below.

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Matthew Magnante, ACE

Matthew Magnante, ACE

Matthew is an ACE (American Council On Exercise) certified fitness professional who has had a passion for fitness since elementary school and continues to research and learn how to build muscle effectively through training and diet. He also loves to help others to achieve their fitness goals and spread the knowledge where needed. Matthew's other passions include learning about mindfulness, strolling through nature, traveling, and always working to improve overall.

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