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  7. Straight Leg Kickback Kneeling

Exercise guide

Straight Leg Kickback Kneeling

  • Beginner
  • Isolation
  • Rep-based
  • Lower legs

This isolation exercise specifically targets the gluteus maximus and hamstrings through hip extension, helping to build posterior chain strength and stability. It is highly effective for improving mind-muscle connection with the glutes without requiring external weight.

Reviewed by the Crucible team · Updated June 2026

Watch the Straight Leg Kickback Kneeling demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Glutes
  • Hamstrings

Secondary

  • Obliques

Equipment

  • Body weight

Setup

  1. Start on all fours in a quadruped position with your hands directly under your shoulders and knees under your hips.
  2. Engage your core to maintain a neutral spine and look at the floor slightly ahead of your hands to keep your neck aligned.
  3. Extend one leg straight back behind you with your toes lightly touching the floor to establish the starting position.

How to do it

  1. Exhale as you lift your straightened leg toward the ceiling using your glutes, keeping the knee fully locked throughout the movement.
  2. Lift until your leg is roughly parallel to the floor, ensuring you do not arch your lower back to gain extra height.
  3. Inhale as you slowly lower the leg back to the starting position using a controlled 2-second tempo.
  4. Complete the desired number of repetitions on one side before switching to the other leg.

Form checklist

  • Keep your hips square to the floor; do not let the working hip rotate or tilt upward.
  • Maintain a flat back and tight core to prevent lumbar hyperextension (arching).
  • Keep your arms straight and push through your palms to stabilize the upper body.
  • Ensure the movement is driven entirely by the hip joint rather than momentum.

Pro tips

  • Focus on a hard squeeze of the glute at the peak of the movement to maximize muscle fiber recruitment.
  • Imagine pushing your heel toward the wall behind you rather than just lifting your foot up to better engage the posterior chain.

Make it harder

  • Add a 2-second pause and peak contraction at the top of each repetition.
  • Incorporate ankle weights or a resistance band around the thighs to increase the load on the glutes.

Frequently asked

What muscles does the straight leg kickback kneeling work?
The straight leg kickback kneeling primarily targets the glutes and hamstrings, and also works the obliques as secondary muscles.
What equipment do you need for the straight leg kickback kneeling?
The straight leg kickback kneeling requires no equipment — just your body weight.
Is the straight leg kickback kneeling good for beginners?
Yes. The straight leg kickback kneeling is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • 3 Point Standing HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Cone Single Foot Lateral HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Way Single Leg HopAdvanced · calves, glutes, hamstrings, and quadriceps
  • 45 Degrees Single Leg Reverse HyperextensionIntermediate · erector spinae, glutes, and hamstrings

Train this with a plan, not guesswork

Crucible builds the straight leg kickback kneeling into a precise program around your body, equipment, location, and time.

Download on the App Store