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Front Plank and Variations

Draftmotor-control90%beginner⬤ strong evidence
View FHIR resourceFHIR R4 ActivityDefinition — the interoperable form of this exercise

Positions & Range of Motion

Start
prone on the forearms with elbows under the shoulders and toes tucked
End
body lifted into one straight line from crown to heel, tailbone tucked and shoulders packed, held isometrically
Range of Motion
isometric anti-extension hold — minimal joint excursion; trunk maintains a neutral straight line against gravity

How to Perform

Prone forearm plank. RA 46-48% MVIC, EO 77% MVIC with bracing. Scapular adduction + posterior pelvic tilt produces highest overall activation. Adding ankle dorsiflexion increases all abdominals >60% MVIC. Well-tolerated in chronic LBP. Longer holds don't predict lower LBP risk.

Watch on YouTube↗

Opens a YouTube search for “Front Plank and Variations”

Starting position: prone

Coaching Cues

  1. 1

    Long body, packed shoulders — deep core holds the line

    (verbal)
  2. 2

    Drive the forearms into the floor and the heels toward the wall

    (verbal)
  3. 3

    Tuck the tailbone toward the back of the knees

    (verbal)
  4. 4

    Body stays straight as a plank from crown to heel

    (visual)

Evidence-Based Dosing & EMG Data

Recommended Dosing

Endurance: 3-4×30-60s. Strength: harder variations 3-4×15-30s. Rehab: 10-20s holds [Calatayud 2019]

EMG Activation Data

RA 46-48% MVIC. EO 77% with bracing [García-Jaén 2020]. Hollowing: IO ES=2.02-2.27 [García-Jaén 2020]. Scap adduction+PPT: highest overall [Cortell-Tormo 2017]

Muscles Involved (5)

Primary Movers

Rectus Abdominis— 46-48% MVIC [Calatayud 2019]
External Oblique— 77% MVIC with bracing [García-Jaén 2020]

Secondary Movers

Internal Oblique— Increases with hollowing ES=2.02-2.27

Stabilizers

Transversus Abdominis
Erector Spinae Group

Easier Variations ↓

1

Knee Plank

From knees — reduced lever arm.

2

Incline Plank

Hands on bench or wall.

Harder Variations ↑

1

Plank with Arm Reach

Alternate reaching forward.

2

Body Saw

Rock forward/backward on forearms.

3

Suspended Plank

Feet in TRX — greatest RA/EO activation [Calatayud 2017].

Target Movements (2)

Lumbar FlexionLumbar Intervertebral Joints
Lumbar ExtensionLumbar Intervertebral Joints

Why This Exercise Matters

Everyday activities this exercise helps you do — essential means it directly trains the capacity the task needs:

Posture MaintenanceCarrying and Lifting Objects

Goals This Helps With

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

Improve Core StrengthperformanceLow Back PainrehabLow Back Injury Preventionprevention

Research Notes

AUDIT[low]: Rated 'strong' with specific EMG values (RA 46-48%, EO 77% with bracing [García-Jaén 2020]; scapular adduction+PPT highest overall [Cortell-Tormo 2017]; Calatayud 2019), yet the linked sources are only Kisner and ACSM. → Attach García-Jaén 2020, Cortell-Tormo 2017, and Calatayud 2019 to support the stated EMG figures.

Evidence Sources (2)