Kickbacks
The kickback is an isolation movement that trains the glutes through hip extension with the knee bent. That bent knee position is what distinguishes it from hip hinge movements — by flexing the knee, the hamstrings are put in a shortened position that limits their contribution to the movement, placing more of the demand directly on the gluteus maximus. It’s one of the more targeted glute isolation movements available.
The kickback doesn’t load as heavily as a hip thrust or a squat and it isn’t designed to. Its value is in the direct, isolated glute stimulus it provides at the end of a session when the larger compound movements have already been done. The glutes are a muscle group that responds well to variety in movement patterns and rep ranges, and the kickback adds a stimulus that other glute movements don’t fully replicate.
Cable and machine variations are more effective than bodyweight for this pattern because they provide consistent tension through the full range of motion. Bodyweight donkey kicks have their place as an activation exercise before training, but for actual muscle development, resistance through the full range produces meaningfully better results.
The movement is straightforward — the hip extends, driving the heel back and upward, and returns to the starting position with control. Squeezing at the top of each rep and controlling the eccentric produces the best stimulus.
Below are the kickback variations in the library.
Reference Card
Movement Pattern: Hip extension — glute isolation Primary Muscles: Gluteus maximus Secondary Muscles: Hamstrings, core stabilizers
Variations
- Bodyweight donkey kicks
- Cable kickback
- Machine kickback
Considerations
- The bent knee position limits hamstring contribution and places more demand directly on the glute — that’s the point
- Cable and machine variations are more effective for muscle development than bodyweight — use them when available
- Squeeze at the top of each rep and control the lowering phase
- This is a finishing movement — it belongs after compound glute work, not before it
Programming Notes
- Best placed at the end of a glute or lower body session
- Responds well to moderate to higher rep ranges (12–20)
- Bodyweight donkey kicks work well as activation work before a session — cable and machine variations work better for actual development