Exercise guide · Intermediate · Compound

Dumbbell Rear Fly: How to Do It & Muscles Worked

The dumbbell rear fly is an isolation exercise that targets the rear deltoids, with secondary emphasis on the trapezius and rhomboids. It is performed by hinging at the hips, maintaining a straight back, and lifting dumbbells out to the sides while squeezing the shoulder blades together.

Primary muscles
Shoulders
Secondary muscles
Traps
Equipment
Dumbbell
Level · type
Intermediate · Compound
Demonstration of the dumbbell rear fly
Front view: muscles worked by the dumbbell rear fly. Primary: shoulders. Secondary: traps.
Back view: muscles worked by the dumbbell rear fly. Primary: shoulders. Secondary: traps.
Primary Secondary

How to do the dumbbell rear fly

  1. Step 1: Stand with your feet shoulder-width apart and hold a dumbbell in each hand.
  2. Step 2: Bend your knees slightly and hinge forward at the hips, keeping your back straight.
  3. Step 3: Extend your arms straight down towards the ground, palms facing each other.
  4. Step 4: Keeping a slight bend in your elbows, lift your arms out to the sides and squeeze your shoulder blades together.
  5. Step 5: Pause for a moment at the top, then slowly lower your arms back down to the starting position.
  6. Step 6: Repeat for the desired number of repetitions.

Sets, reps and programming

Suggested sets, reps and rest for the dumbbell rear fly by training goal
Goal Sets Reps Rest Effort
Strength 3–5 3–6 3–5 min 1–3 reps in reserve
Muscle growth 3–4 6–12 2–3 min 1–2 reps in reserve
Muscular endurance 2–3 12–20 1–2 min 1–3 reps in reserve

Ranges follow the ACSM position stand on progression in resistance training. Muscle grows across a wide range of loads when sets end close to failure (Schoenfeld et al., 2017), longer rests between heavy sets support strength and size (Schoenfeld et al., 2016), and stopping a rep or two short of failure works about as well as training to failure (Grgic et al., 2022). Estimate your working weights with the strength calculators.

Dumbbell Rear Fly alternatives

More exercises that train the shoulders as their main target:

More shoulders exercises

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Sources

  1. American College of Sports Medicine. Progression models in resistance training for healthy adults. Med Sci Sports Exerc. 2009;41(3):687-708.
  2. Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW. Strength and hypertrophy adaptations between low- vs. high-load resistance training. J Strength Cond Res. 2017;31(12):3508-3523.
  3. Schoenfeld BJ, Pope ZK, Benik FM, et al. Longer interset rest periods enhance muscle strength and hypertrophy in resistance-trained men. J Strength Cond Res. 2016;30(7):1805-1812.
  4. Grgic J, Schoenfeld BJ, Orazem J, Sabol F. Effects of resistance training performed to repetition failure or non-failure on muscular strength and hypertrophy: a systematic review and meta-analysis. J Sport Health Sci. 2022;11(2):202-211.

Step-by-step instructions and demonstration media are from the ExerciseDB exercise dataset.

This guide is general fitness information, not medical advice. Stop if an exercise causes pain and speak to a doctor or physiotherapist about injuries or health conditions before starting a new programme.