ArmsDumbbellIsolation — wrist extension

Bench-Supported Dumbbell Reverse Wrist Curl

Reviewed by Bryan Cortez, MS

Support the forearms so the wrist extensors cannot hide behind elbow motion.

Rep Sweet Spot

12-25

Sets

2-4

sets

RIR

1-3

Canonical coaching profile

Complete coaching guidance, with the evidence boundary visible

This profile is served from the canonical Airtable coaching library. Its theory tier and evidence confidence remain separate source-truth fields.

Theory

Theory tier S

Evidence confidence

Mechanics-led evidence confidence (D)

The tier is a reasoned biomechanics judgment. Evidence grade D is mechanics-led and is not direct hypertrophy proof; the full category evidence-control program remains pending.

Why it ranks: Kneeling Bench-Supported Dumbbell Reverse Wrist Curl is ranked for Forearm extensors because its named path directly expresses loaded wrist or finger extension; external support reduces balance and bracing demands. The main limitation is individual joint fit and execution consistency.
Primary limiter: Small load tolerance and wrist range; dumbbell jumps can be too large.
Safety and fit: Start light, use a pain-free range, and keep the forearms fully supported so the wrist is not forced by momentum.
What would change the call: Reverse or lower the placement if a corrected line-of-force model shows that another limiter owns the task, or if the declared range cannot be progressed repeatably.

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Demonstration

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How to do it

Setup

Kneel behind a bench
Rest both forearms palms-down on the pad
Let the hands clear the edge
Hold light dumbbells with wrists neutral

Execution

Lower the knuckles toward the floor
Lift the backs of the hands toward the forearms
Pause without bending the elbows
Return slowly

Common Errors

Lifting the forearms off the bench
Turning the movement into a reverse curl
Bouncing at the bottom
Using a load that shortens the range

Cues That Work

Forearms heavy; lift the knuckles; move only at the wrist

No-Fly Zone

Avoid loads that require elbow motion or a bouncing wrist reversal.

Programming

Sequence priority

Late

Direct extensor work is low-fatigue systemically but can weaken grip stability for earlier pulls.

Progression

Model — Double

Fallback model — RPE

Use identical support and wrist range; add reps first because small muscles often cannot absorb a large dumbbell jump cleanly.

Best program fit

Pull

Load increments

Standardthe smallest dumbbell increase

Smaller incrementadd reps or extend the top pause

Larger incrementone dumbbell step only after every rep reaches the same height

If it hurts

Pain is information, not a challenge to push through. Stop the set if pain is sharp, worsening, or changes how you move. These are exercise-selection options, not medical diagnosis or rehabilitation advice.

Work down this list in order. Stop at the first change that removes the pain.

Step 1
Setup tweaks
Use one arm at a time or change bench height to keep the forearm relaxed and supported.
Step 2
ROM / tempo / bias
Use a two-second top hold or a three-second lowering phase.
Step 3
Implement swap
Cable wrist extension or a light lever reverse wrist curl.

Substitutions

Approved fallback

Cable wrist extension or a light lever reverse wrist curl.

The Evidence

This directly loads wrist extension. It is not a treatment for elbow or wrist pain, and loading must respect individual tolerance.

SFR — 4.5

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