Sitting Underhand Crossover On A Chair
Sitting Underhand Crossover On A Chair Exercise Description
The Sitting Underhand Crossover on a Chair is a bodyweight chest exercise that uses self-applied resistance to train horizontal adduction of the shoulder. Seated upright, you position your arms in front of your torso with an underhand (palms-up) orientation and press your forearms/hands together as you sweep one arm across the midline, then alternate sides. The primary mover is the pectoralis major, with assistance from the anterior deltoid; the elbow flexors and forearm muscles act isometrically to maintain pressure. Scapular stabilizers (middle/lower trapezius, serratus anterior) help keep the shoulder blades set while the arms move. This setup allows you to focus on clean mechanics—neutral spine, shoulders down and back, elbows slightly bent—while creating as much or as little opposing force as you can control.
- Muscle Groups: Chest, Pecs
- Target Muscles: Pectoralis Major - Sternal Head
- Assisting Muscles: Deltoid - Anterior
- Stabilizing Muscles: Biceps Brachii - Short Head, Flexor Carpi Radialis, Serratus Anterior, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Chest
- Body Surface: Front
- Body Symmetry: Unilateral
- Equipment: Bodyweight, Chair
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Horizontal Shoulder Adduction
- Joint Involvement: Single-joint
- Muscle Location: Mid Chest
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Female
How To Do The Sitting Underhand Crossover On A Chair Exercise
‘- Sit tall on a sturdy chair; feet flat, knees roughly 90°, pelvis neutral, ribs stacked over pelvis.
– Raise arms in front of mid-chest; elbows softly bent (about 20–30°), palms up (supinated), wrists straight.
– Set shoulders: lightly retract and depress the shoulder blades; keep neck long and chin gently tucked.
– Bring forearms/hands together in front of the sternum and press them into each other to create firm, even resistance.
– Keep elbows just below shoulder height; steadily sweep the right forearm across the body over the left while maintaining inward pressure.
– Return to center under control without losing tension; then sweep the left forearm over the right.
– Breathe continuously—exhale during the crossover, inhale back to center.
– Maintain neutral spine; avoid rib flare, low-back arching, shrugging, or letting elbows drift behind the torso.
– Keep wrists neutral and pressure through the forearms/hands (not the fingertips); movement comes from the shoulders performing horizontal adduction.
– Stop the range before any pinching or joint discomfort; reset posture as needed.
Sitting Underhand Crossover On A Chair Tips
‘- Sit tall on a sturdy chair with feet flat, knees about 90°, pelvis neutral, and ribs stacked over the pelvis.
– Raise your arms in front of mid-chest with elbows softly bent (about 20–30°) and palms facing up.
– Keep your wrists straight and neutral throughout the movement.
– Lightly retract and depress your shoulder blades, keeping the neck long and chin gently tucked.
– Bring your forearms/hands together in front of the sternum and press them together to create firm, even resistance.
– Keep elbows just below shoulder height as you sweep one forearm across your body.
– Maintain steady inward pressure between the forearms/hands both during the crossover and the return to center.
– Breathe continuously—exhale during the crossover, inhale as you return to center.
– Maintain a neutral spine; avoid rib flare, low-back arching, shrugging, or letting the elbows drift behind the torso.
– Stop the range before any pinching or joint discomfort and reset your posture as needed.
Sitting Underhand Crossover On A Chair Beginner Introduction
The Sitting Underhand Crossover on a Chair is a seated, bodyweight chest movement that uses your own limbs for resistance instead of external equipment. While upright on a chair, the arms are held in front of the body with the palms turned upward and the forearms pressed into each other. One arm then glides across the center of the body while the other pushes back, before alternating sides. This meeting of opposing forces turns a simple arm sweep into targeted work for the chest, with support from the front of the shoulders, the arms, and the forearms.
Because the upper body stays tall and organized, this drill emphasizes precise shoulder motion rather than momentum. Gentle bend at the elbows, relaxed neck, and steady shoulder position encourage smooth action around the shoulder joint while the muscles between the shoulder blades and along the ribcage contribute to a stable base. The tension comes from how firmly the arms press together, allowing easy adjustments in challenge level while maintaining careful control over posture and alignment.