Execution form
- EquipmentMachine
- PatternIsolation
- Reps12 to 20 reps
- Joint loadNone flagged
How to do the Reverse Pec Deck
Set up. Sit facing the pec deck pad with the handles set to the rear position. Grip them with straight or slightly bent arms in front of you.
- Open your arms out to the sides in a wide arc.
- Squeeze the back of your shoulders.
- Return under control.
Form cues
- Keep your chest on the pad.
- Keep the arms long.
- Move at the shoulder, not the elbow.
Common mistakes
- Pulling the shoulder blades hard together so the upper back takes over.
- Using momentum.
Muscles worked
Main target: Rear delts. The rear head of the deltoid covers the back of the shoulder. It draws the arm back and turns it outward, the opposite of a bench press.
On the way: Upper back.
Its other side: Chest, Front delts and Triceps, in the horizontal push and pull pattern.
Its other side: Front delts, in the front and rear shoulder pattern.
What to pair it with
Movements that round out a workout with the Reverse Pec Deck, from the same catalog the StatBlockFit app logs.
- Cable Front Raise Superset partner: it trains the other side of the front and rear shoulder pattern, so the two can alternate.
- Lat Pulldown Same pull session: it trains the lats.
- Cable Hammer Curl Same pull session: it trains the biceps.
A complete workout around it
4 movements, the Reverse Pec Deck first, at the catalog's rep ranges. Load it into the workout builder to change the sets, reps and weights, then bookmark it or download it.
- Reverse Pec Deck 3 × 12 to 20 reps
- Cable Front Raise 3 × 10 to 20 reps
- Lat Pulldown 3 × 8 to 15 reps
- Cable Hammer Curl 3 × 10 to 20 reps
Alternatives and swaps
The same main muscle with other equipment: a swap never changes the muscle a workout trains.
Home or dumbbell swap
Rear Delt Fly
Dumbbell
Gym or cable swap
Cable Rear Delt Fly
Cable
A swap describes the movement, not your body: if a joint hurts, ask a professional before you train it.
Working weight and 1RM calculator
Enter a set you did: the weight, the reps and how many more reps you had left in you. The estimate is the formula the StatBlockFit app uses for its records, weight × (1 + (reps + reps in reserve) ÷ 30); above 12 reps it is rough.
Training zones
| Zone | Share of 1RM | Usual reps |
|---|---|---|
| Strength | 85 to 90 % | 3 to 6 |
| Muscle growth | 70 to 80 % | 6 to 12 |
| Endurance | 60 to 65 % | 15 to 20 |
A warm-up before the working sets: 50 % for 5, 70 % for 3 and 85 % for 1, each rounded down to a plate.
Common starting points, not a prescription: the right weight is the one you can lift with good form for the reps you planned.
Variations and preparation
A variation of: Rear Delt Fly.
Other variations of the Rear Delt Fly: Cable Rear Delt Fly and Prone T-Raise.
Do before it: Band Pull-Apart (shoulder blades).
Track it in StatBlockFit
In the StatBlockFit app the Reverse Pec Deck is logged set by set: the app suggests your next weight after each session, times your rests, keeps your records and shows the 72-hour recovery of every muscle on its training map. The training guide explains how.
Questions
How do you do the Reverse Pec Deck?
Set up: Sit facing the pec deck pad with the handles set to the rear position. Grip them with straight or slightly bent arms in front of you. Steps: 1. Open your arms out to the sides in a wide arc. 2. Squeeze the back of your shoulders. 3. Return under control. Form cues: Keep your chest on the pad. Keep the arms long. Move at the shoulder, not the elbow. Common mistakes: Pulling the shoulder blades hard together so the upper back takes over. Using momentum.
What muscles does the Reverse Pec Deck work?
It trains the rear delts as its main target and works the upper back on the way.
What can I do instead of the Reverse Pec Deck?
At home: Rear Delt Fly. In a gym: Cable Rear Delt Fly. Each trains the same main muscle.
What should I pair the Reverse Pec Deck with?
Good partners in the same workout are Cable Front Raise, Lat Pulldown and Cable Hammer Curl.
How heavy should the Reverse Pec Deck be?
Pick a weight you can lift for the planned reps with one or two left in reserve. As a common starting point, sets of 3 to 6 reps use about 85 to 90 percent of your one-rep max and sets of 6 to 12 reps about 70 to 80 percent; the calculator on this page does the arithmetic.