📖 Static demo — read-only snapshot

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Tuck L-Sit

Draftmotor-control50%intermediate⬤ expert-opinion evidence
Evidence chain View FHIR resource(snapshot)movements → muscles → citations · and the interoperable FHIR form · served as a static snapshot here, not the live API route

Why Include This

The classic leverage regression of the L-sit: identical shoulder and trunk demand, far shorter resistance arm at the hip. Time under tension can be built here before the legs are extended.

Evidence basis: expert-opinion

Positions & Range of Motion

Start
supported on straight arms between parallettes, shoulders depressed, knees drawn to the chest
End
position held; feet clear of the floor, knees at chest height, arms locked
Range of Motion
static hold; hips and knees flexed

How to Perform

Support hold with the knees drawn toward the chest and the feet clear of the floor, shortening the lower-limb lever so the hip flexors and abdominals hold a compact mass.

Watch on YouTube↗

Opens a YouTube search for “Tuck L-Sit”

Equipment:parallettes or yoga blocks

Coaching Cues

  1. 1

    Round your lower back slightly and pull the knees up, rather than leaning back

    (verbal)
  2. 2

    Shoulders stay down the whole time — if they shrug, the hold is over

    (verbal)

Evidence-Based Dosing & EMG Data

Recommended Dosing

3 holds × 15–30 s, 2–3×/week (consensus programming, not RCT-derived)

Muscles Involved (7)

Primary Movers

Rectus Abdominis
Iliopsoas

Secondary Movers

Lower Trapezius
Triceps Brachii

Stabilizers

External Oblique
Serratus Anterior
Latissimus Dorsi

Easier Variations ↓

1

Foot-Supported L-Sit

Regress to Foot-Supported L-Sit.

Harder Variations ↑

1

L-Sit

Progress to L-Sit. Extending the knees roughly doubles the resistance arm at the hip; hamstring extensibility, not abdominal strength, is often the limiter.

Target Movements (4)

Scapular DepressionScapulothoracic Articulation
Elbow ExtensionHumeroulnar Joint
Hip FlexionHip Joint (Coxofemoral)
Knee FlexionTibiofemoral Joint

Goals This Helps With

Rehab, performance, prevention, and mobility goals this exercise supports — essential means it's a cornerstone:

Improve Core Strengthperformance

Research Notes

claude-researched 2026-08 (bodyweight ladders). Rung ordering is community consensus, not trial evidence — see source bodyweight-progression-consensus-2026. EMG and RCT sourcing pending.

Evidence Sources (1)