Back Exercise · Body Weight
Lower Back Curl
- Category
- Back
- Equipment
- Body Weight
- Target
- Spine
Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.
The Lower Back Curl is a compound back movement designed to train the Spine with direct engagement of the Hamstrings.
Sagittal/transverse plane shoulder horizontal extension and scapular retraction. Strengthens upper back, rhomboids, and rear deltoids while demanding lower back stability. Executing this with strict form maximizes muscle fiber recruitment while protecting joint structures.
Quick Exercise Facts
Target Muscle Activation
This move trains spinal extension in a slow, controlled curl through the lower back and glutes, similar in intent to a back extension but performed on the floor without equipment. Useful as a gentle way to build lower-back endurance for anyone easing back into training after time off.
How to Do the Lower Back Curl
- Lie flat on your stomach with your legs extended and your arms by your sides.
- Engage your glutes and hamstrings, and slowly lift your upper body off the ground, curling your back upward.
- Pause briefly at the top, then slowly lower your upper body back down to the starting position.
- Repeat for your target rep goal, keeping your core engaged and avoiding any reliance on momentum.
Recommended Sets & Reps by Training Goal
70–80% 1RM · 90–120s rest
85%+ 1RM · 2–3 min rest (Calc 1RM)
50–60% 1RM · 45–60s rest
Biomechanical & Joint Load Cues
Sagittal/transverse plane shoulder horizontal extension and scapular retraction. Strengthens upper back, rhomboids, and rear deltoids while demanding lower back stability.
Common Mechanical Mistakes & Form Errors to Avoid
- Using Torso Momentum (Jerking): Rocking the upper body aggressively to initiate the pull relies on hip extension rather than the latissimus and rhomboids.
- Incomplete Scapular Retraction: Failing to pull the shoulder blades together at the top cuts off peak contraction of the rhomboids and middle trapezius.
- Flaring Elbows Too Wide: Letting elbows flare 90 degrees shifts mechanical tension away from the lats onto the upper traps and neck.
Proper Breathing Patterns & Core Engagement
Inhale as weight lowers forward. Pull elbows back past torso while exhaling and squeezing shoulder blades together.
Add the Lower Back Curl to Your Custom Workout Routine
Build a personalized, science-backed workout plan matching your training goals, equipment access, and schedule.
Injury Modification & Joint Safety
For lifters with lower back fatigue, chest-supported incline rows or seated cable rows provide equivalent upper-back hypertrophy without spinal loading. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Back exercises category.
Muscles Worked
The Lower Back Curl primarily targets the Spine, with Glutes as the primary synergist muscle group, along with the Hamstrings.
More Back Exercises
Alternate Lateral Pulldown
Archer Pull Up
Assisted Parallel Close Grip Pull-Up
Assisted Pull-Up
Assisted Standing Chin-Up
Assisted Standing Pull-Up
More Spine Exercises
Back Extension On Exercise Ball
Band Straight Leg Deadlift
Exercise Ball Back Extension With Arms Extended
Exercise Ball Back Extension With Hands Behind Head
Exercise Ball Back Extension With Knees Off Ground
Exercise Ball Back Extension With Rotation
Equipment Alternatives
Don't have body weight? These target the same spine with different equipment.
FAQ
- What muscles does the Lower Back Curl work?
- The Lower Back Curl primarily targets the spine as the primary agonist. Synergist assistance is provided by the glutes along with the hamstrings. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.
- What equipment do I need for the Lower Back Curl?
- The Lower Back Curl is performed using no equipment — just body weight. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.
- What is the most common form mistake on the Lower Back Curl?
- The most frequent error is using torso momentum (jerking): Rocking the upper body aggressively to initiate the pull relies on hip extension rather than the latissimus and rhomboids.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.
- How many sets and reps should I perform on the Lower Back Curl?
- For muscle hypertrophy and size, aim for 3 to 4 working sets of 8 to 12 repetitions at 70% to 80% of your 1RM with 90 to 120 seconds rest. For absolute strength development, prioritize 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes rest.
- What's a good alternative to the Lower Back Curl?
- If you don't have access to the space or setup it needs, the Back Extension On Exercise Ball targets the same spine using stability ball instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.