Exercise guide
Dumbbell Alternate V Up
- Intermediate
- Compound
- Rep-based
- Lower legs
- Upper legs
- Waist
The Dumbbell Alternate V Up is a dynamic core exercise that challenges the rectus abdominis and obliques by adding external resistance to a unilateral trunk flexion. It effectively builds explosive core strength and improves coordination between the upper and lower body.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on your back on a mat with your legs fully extended and feet together.
- Hold a single dumbbell with both hands, extending your arms straight back behind your head.
- Engage your core to press your lower back firmly into the floor.
How to do it
- Simultaneously lift your torso and your right leg off the floor, reaching the dumbbell toward your right foot while exhaling sharply.
- Inhale as you lower your torso and leg back to the starting position with a controlled, 2-second tempo.
- Repeat the movement by lifting your torso and your left leg, alternating sides for each repetition.
- Maintain a slight hover with your arms and legs at the bottom of the movement to keep constant tension on the abdominals.
Form checklist
- Keep the moving leg as straight as possible to maximize hip flexor and quad engagement.
- Avoid using momentum or swinging the dumbbell; initiate the lift from the core.
- Ensure your shoulder blades clear the floor at the peak of the movement.
- Keep your neck neutral by looking toward your toes rather than tucking your chin to your chest.
Pro tips
- Focus on 'folding' at the hips rather than just reaching with your arms to ensure the lower abs are doing the work.
- Pause for a half-second at the top of the 'V' to emphasize the peak contraction of the obliques.
Make it harder
- Keep both heels hovering 3-6 inches off the ground throughout the entire set instead of resting them between reps.
- Perform the movement with a heavier dumbbell or slow the eccentric lowering phase to 4 seconds.
Frequently asked
- What muscles does the dumbbell alternate v up work?
- The dumbbell alternate v up primarily targets the abs and obliques, and also works the glutes and hamstrings as secondary muscles.
- What equipment do you need for the dumbbell alternate v up?
- The dumbbell alternate v up uses dumbbell.
- Is the dumbbell alternate v up good for beginners?
- The dumbbell alternate v up is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.