What Muscles Do Anderson Squats Work?

Anderson squats—named after legendary strongman Paul Anderson—start from the bottom position with the bar resting on pins. This eliminates the stretch reflex and forces your quads, glutes, and core to generate force from a dead stop. The result is brutally honest strength that transfers directly to heavier conventional squats.

Quick Answer

Primary muscles: Quadriceps (maximum), glutes (maximum), core (very high)

Secondary muscles: Erector spinae, adductors, hamstrings

What makes it unique: Starting from the bottom eliminates all momentum and stretch reflex, building pure concentric strength.

Complete Muscle Breakdown

Quadriceps (Maximum Activation)

Your quads work harder than almost any other squat variation:

• No stretch reflex: Can't use elastic energy from the descent
• Pure concentric: Must generate all force from dead stop
• Full recruitment: Need maximum motor unit activation immediately
• All four quad heads fire maximally to initiate movement

The quads have nowhere to hide—they either produce force or the bar doesn't move.

Glutes (Maximum Activation)

Glutes face the same brutal demand:

• Must fire immediately from the bottom position
• No momentum assistance
• Both gluteus maximus and medius work hard
• Hip extension strength is fully tested

Core (Very High Activation)

Your core works overtime for stability:

• Must brace maximally before initiating the lift
• No settling or adjusting under load
• Maintains spinal position from the first moment
• Anti-flexion demand is extreme

Erector Spinae (High Activation)

Lower back stabilizers work hard:

• Keep spine neutral under load from the start
• Isometric contraction throughout
• No chance to build tension progressively

Adductors (Moderate to High)

Inner thighs contribute to hip extension:

• Help drive out of the hole
• Work with glutes for powerful hip extension
• Especially active in wider stances

Hamstrings (Moderate)

Hamstrings play a supporting role:

• Assist hip extension
• Stabilize the knee joint
• Less dominant than in conventional squats due to starting position

Why the Dead Stop Matters

Eliminates the Stretch Reflex

Normal squats use the stretch-shortening cycle:

• Muscles stretch during descent
• Elastic energy stores in tendons
• That energy helps initiate the ascent

Anderson squats remove this entirely:

• Bar starts on pins—no descent
• No elastic energy available
• Pure muscular force required

Builds Starting Strength

Starting strength is the ability to generate force immediately:

• Critical for athletes (sprinting, jumping)
• Transfers to getting out of the hole in regular squats
• Builds explosive power from disadvantaged positions

Exposes True Strength

You can't hide weaknesses:

• No momentum to carry you through weak points
• Either you're strong enough or you're not
• Honest assessment of bottom position strength

Reinforces Proper Position

Must set up perfectly every rep:

• Get under the bar in correct position
• Brace before lifting
• No adjusting mid-rep

Proper Anderson Squat Technique

Equipment Setup

1. Power rack: Required with adjustable safety pins
2. Pin height: Set at your desired bottom position (typically parallel or just below)
3. Bar position: High bar or low bar, your preference

The Setup

1. Set pins at your bottom squat depth
2. Position bar on pins, centered in rack
3. Get under the bar in your normal squat stance
4. Set your position: Feet planted, grip set, brace engaged
5. Create tension: Push against the bar before lifting

The Lift

1. Brace hard with big breath
2. Drive through your feet—"push the floor away"
3. Explode up with maximum intent
4. Complete the rep to full standing
5. Lower with control back to pins
6. Reset completely between reps

Key Cues

• "Dead stop, dead start"—no bouncing off pins
• "Brace before you drive"
• "Explode from zero"
• "Reset every rep"—treat each rep as a single

Common Mistakes

Bouncing Off the Pins

This defeats the purpose:

• Each rep should start from complete stillness
• Bar should rest fully on pins between reps
• No using the bounce for momentum

Poor Starting Position

You must be tight before lifting:

• Set up like you're about to squat your max
• Full brace, tension throughout body
• Slack = failed reps or injury

Wrong Pin Height

Pin height determines what you're training:

• Too high = partial squats with limited carryover
• Too low = can't maintain good position
• Start at parallel, adjust based on goals

Not Resetting Between Reps

Each rep is essentially a single:

• Let the bar settle completely
• Re-brace between reps
• Don't rush through the set

Programming Anderson Squats

For Strength Building

• Sets/reps: 5-6 sets of 2-3 reps
• Load: 80-90% of regular squat max (you'll likely be weaker)
• Rest: 3-5 minutes between sets
• Frequency: 1x per week

For Power Development

• Sets/reps: 6-8 sets of 1-2 reps
• Load: 60-75% with maximum explosive intent
• Rest: 2-3 minutes
• Focus: Speed of bar off pins

For Weak Point Training

• Pin height: Set at your sticking point
• Sets/reps: 4-5 sets of 3-5 reps
• Load: Moderate (70-80%)
• Focus: Building strength at specific position

Sample Week Integration

• Day 1: Competition squat (full ROM, heavy)
• Day 3: Anderson squat (pins at parallel, moderate-heavy)

Or use as a primary squat variation for a 4-week training block.

Pin Height Variations

Above Parallel (Quarter Squat Position)

• Emphasizes lockout strength
• Allows heavier weights
• Less specific to full squat
• Good for overload and confidence

At Parallel

• Most common and recommended
• Trains the typical sticking point
• Good balance of specificity and loading
• Standard starting point

Below Parallel (ATG Position)

• Maximum difficulty
• Builds strength in deepest position
• Use lighter weights
• Excellent for Olympic lifters

Anderson Squat Variations

Pause Anderson Squat

• Hold position before driving
• Even more challenging
• Builds maximum isometric strength at bottom

Anderson Front Squat

• Front rack position
• More quad emphasis
• More core demand
• Harder to set up but effective

Anderson Box Squat

• Sit on box at bottom instead of pins
• Similar benefit with different feel
• Some prefer this setup

Banded Anderson Squat

• Add bands for accommodating resistance
• Teaches acceleration throughout the lift
• Advanced variation

Who Should Do Anderson Squats?

Ideal For

• Lifters weak out of the hole
• Those wanting to build explosive power
• Powerlifters addressing weak points
• Athletes needing starting strength
• Anyone who bounces in the hole

Use Caution If

• You're a beginner (master regular squats first)
• You have limited mobility (pins too low = compromised position)
• You're recovering from injury (high demand from dead stop)

Expected Performance

Most lifters are weaker on Anderson squats:

• Expect 10-20% less than your regular squat
• The difference reveals how much you rely on the stretch reflex
• As Anderson strength improves, regular squat typically follows

The Bottom Line

Anderson squats work your quads, glutes, and core from a dead stop, eliminating all momentum and building honest strength from the bottom of the squat. Named after one of the strongest humans ever, this exercise builds the explosive power and positional strength that transfers directly to bigger squats.

If you struggle out of the hole or want to build true starting strength, Anderson squats deliver. The dead stop is humbling at first, but the strength you build is real.

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