> ## Documentation Index
> Fetch the complete documentation index at: https://movement.mantavyam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sitting leg extensions

> Beginner · Dynamic · Bilateral. Strength

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Also known as: V-sit ab leg extension, Knee tuck.

| | |
| - | - |
| **Difficulty** | Beginner |
| **Velocity** | Dynamic |
| **Symmetry** | Bilateral |
| **Athlete** | Louis |
| **Video length** | 10 s |

## Technique

1. Sit on the ground, tuck your legs close to your chest, lift your feet off the ground and balance on your buttocks.
2. Extend your legs forward while leaning slightly back to keep the balance.
3. Then bring the legs back to the starting position.

## Form tips

* During the whole exercise, only your buttocks should be in contact with the ground.
* Keep your Abs engaged.

## Muscles

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  <div className="flex items-center gap-2 font-semibold" style={{color: "#c8102e"}}><Icon icon="dumbbell" color="#c8102e" size={18} /> Strength</div>

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  <Columns cols={2}>
    <Card title="Primary"><ul className="not-prose list-none p-0 mt-2 mb-0 space-y-1.5"><li className="flex items-center gap-2"><span className="inline-block w-2 h-2 rounded-full shrink-0" style={{background: "#cc2742"}} />Abs</li><li className="flex items-center gap-2"><span className="inline-block w-2 h-2 rounded-full shrink-0" style={{background: "#cc2742"}} />Obliques</li><li className="flex items-center gap-2"><span className="inline-block w-2 h-2 rounded-full shrink-0" style={{background: "#cc2742"}} />Pelvis</li><li className="flex items-center gap-2"><span className="inline-block w-2 h-2 rounded-full shrink-0" style={{background: "#cc2742"}} />Quadriceps</li></ul></Card>
    <Card title="Secondary"><ul className="not-prose list-none p-0 mt-2 mb-0 space-y-1.5"><li className="flex items-center gap-2"><span className="inline-block w-2 h-2 rounded-full shrink-0" style={{background: "#e299a6"}} />Hip adductors</li></ul></Card>
  </Columns>
</div>

<Accordion title="Individual muscles" icon="list">
  * Rectus abdominis
  * External oblique
  * Internal oblique
  * Iliacus
  * Rectus femoris
  * Psoas major
</Accordion>

## Equipment

<div className="not-prose" style={{display: "grid", gridTemplateColumns: "repeat(auto-fill, minmax(10rem, 1fr))", gap: "0.75rem"}}><a href="/collections/equipment/ground-hands-or-body" className="flex flex-col rounded-xl border border-gray-200 dark:border-gray-800 overflow-hidden no-underline text-gray-900 dark:text-gray-100 hover:border-gray-400 dark:hover:border-gray-600"><div className="bg-white flex items-center justify-center p-3" style={{height: "8.5rem"}}><img src="https://mintcdn.com/openmovement/vLNdve7XPAGUwV8u/images/equipment/q01h.webp?fit=max&auto=format&n=vLNdve7XPAGUwV8u&q=85&s=29181eaf27fe629ddae54c0248aef224" alt="Ground (hands or body)" noZoom className="m-0 w-full h-full object-contain" width="286" height="173" data-path="images/equipment/q01h.webp" /></div><span className="px-3 py-2.5 text-sm font-medium leading-snug border-t border-gray-200 dark:border-gray-800">Ground (hands or body)</span></a></div>

## Appears in

<div className="not-prose rounded-2xl border border-gray-200 dark:border-gray-800 px-5 py-4 flex flex-col gap-4"><div style={{display: "flex", flexWrap: "wrap", gap: "0.5rem 1rem", alignItems: "baseline"}}><div className="flex items-center gap-2 font-medium text-gray-900 dark:text-gray-100" style={{flex: "0 0 10rem"}}><Icon icon="dumbbell" size={16} /> Strength</div><div style={{flex: "1 1 18rem", display: "flex", flexWrap: "wrap", gap: "0.5rem"}}><a href="/collections/strength/abs" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">Abs</a><a href="/collections/strength/obliques" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">Obliques</a><a href="/collections/strength/pelvis" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">Pelvis</a><a href="/collections/strength/quadriceps" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">Quadriceps</a><a href="/collections/strength/hip-adductors" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">Hip adductors</a></div></div><div style={{display: "flex", flexWrap: "wrap", gap: "0.5rem 1rem", alignItems: "baseline"}}><div className="flex items-center gap-2 font-medium text-gray-900 dark:text-gray-100" style={{flex: "0 0 10rem"}}><Icon icon="medal" size={16} /> Calisthenics skills</div><div style={{flex: "1 1 18rem", display: "flex", flexWrap: "wrap", gap: "0.5rem"}}><a href="/collections/calisthenics-skills/l-sit-and-v-sit" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500">L-sit & V-sit</a></div></div><div style={{display: "flex", flexWrap: "wrap", gap: "0.5rem 1rem", alignItems: "baseline"}}><div className="flex items-center gap-2 font-medium text-gray-900 dark:text-gray-100" style={{flex: "0 0 10rem"}}><Icon icon="person" size={16} /> Joint movements</div><div style={{flex: "1 1 18rem", display: "flex", flexDirection: "column", gap: "0.5rem"}}><div className="flex flex-wrap items-center gap-2"><span className="text-sm text-gray-500 dark:text-gray-400 w-20">Trunk</span><a href="/collections/joint-movements/trunk-flexion" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500"><span className="inline-block w-2 h-2 rounded-full" style={{background: "#c8102e"}} />flexion</a></div><div className="flex flex-wrap items-center gap-2"><span className="text-sm text-gray-500 dark:text-gray-400 w-20">Hip</span><a href="/collections/joint-movements/hip-flexion" className="inline-flex items-center gap-1.5 rounded-full border border-gray-200 dark:border-gray-700 px-3 py-1 text-sm text-gray-700 dark:text-gray-300 no-underline hover:border-gray-400 dark:hover:border-gray-500"><span className="inline-block w-2 h-2 rounded-full" style={{background: "#c8102e"}} />flexion</a></div><div className="flex gap-4 text-xs text-gray-500 dark:text-gray-400"><span className="inline-flex items-center gap-1.5"><span className="inline-block w-2 h-2 rounded-full" style={{background: "#c8102e"}} /> trains</span><span className="inline-flex items-center gap-1.5"><span className="inline-block w-2 h-2 rounded-full" style={{background: "#1e88e5"}} /> stretches</span></div></div></div></div>

## Progressions

<Columns cols={3}>
  <Card title="Chair l-sit" img="https://mintcdn.com/openmovement/qn9pA-8XF4O_0Hwh/images/exercises/e02h.jpg?fit=max&auto=format&n=qn9pA-8XF4O_0Hwh&q=85&s=a77b9108affe2fd7b7e9566fadd15aa8" href="/exercises/chair-l-sit-e02h" width="320" height="320" data-path="images/exercises/e02h.jpg">Novice</Card>
</Columns>

## Regressions

<Columns cols={3}>
  <Card title="Assisted sitting leg extensions" img="https://mintcdn.com/openmovement/NshFvDFu3JkKMedy/images/exercises/e0gc.jpg?fit=max&auto=format&n=NshFvDFu3JkKMedy&q=85&s=a3fbb91dcfe7ece8b6aacdc7c4b24170" href="/exercises/assisted-sitting-leg-extensions-e0gc" width="320" height="320" data-path="images/exercises/e0gc.jpg">Beginner</Card>
</Columns>

<Accordion title="View Similar Exercises" icon="shuffle">
  <Columns cols={3}>
    <Card title="Tuck-up" img="https://mintcdn.com/openmovement/YBApRYwE1H_T7xDr/images/exercises/e0oo.jpg?fit=max&auto=format&n=YBApRYwE1H_T7xDr&q=85&s=1a99f116a4bb8d17d2c042948afad8ce" href="/exercises/tuck-up-e0oo" width="320" height="320" data-path="images/exercises/e0oo.jpg">Beginner</Card>
    <Card title="Butt walk" img="https://mintcdn.com/openmovement/u4isihpalktq37dc/images/exercises/e0xc.jpg?fit=max&auto=format&n=u4isihpalktq37dc&q=85&s=a56b5be88f7ae57f5f61277844d7dfd5" href="/exercises/butt-walk-e0xc" width="320" height="320" data-path="images/exercises/e0xc.jpg">Beginner</Card>
    <Card title="Tuck reverse crunch" img="https://mintcdn.com/openmovement/HEkm5v6rSDyOaCLR/images/exercises/e0ip.jpg?fit=max&auto=format&n=HEkm5v6rSDyOaCLR&q=85&s=93c184626183714e1071d7041b7d1b7c" href="/exercises/tuck-reverse-crunch-e0ip" width="320" height="320" data-path="images/exercises/e0ip.jpg">Beginner</Card>
    <Card title="Lying legs raise" img="https://mintcdn.com/openmovement/8P9v7hq8gCkvmVqE/images/exercises/e06q.jpg?fit=max&auto=format&n=8P9v7hq8gCkvmVqE&q=85&s=8f9cbe06ee4ddeda86262e84214a1730" href="/exercises/lying-legs-raise-e06q" width="320" height="320" data-path="images/exercises/e06q.jpg">Beginner</Card>
    <Card title="Roll up" img="https://mintcdn.com/openmovement/lhCWKkIj7O_k1qHw/images/exercises/e0zw.jpg?fit=max&auto=format&n=lhCWKkIj7O_k1qHw&q=85&s=bec0f1552f3f9d3c333c0a65e433d513" href="/exercises/roll-up-e0zw" width="320" height="320" data-path="images/exercises/e0zw.jpg">Beginner</Card>
  </Columns>
</Accordion>

<Note>
  Want to log this exercise? Open it in [Calistree](https://calistree.app/datasheet/sitting-leg-extensions-e0gw). Text and images are used under [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/); the video plays from the original source.
</Note>


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