Sitting Jack On A Padded Stool
Sitting Jack On A Padded Stool Exercise Description
The Sitting Jack on a padded stool is a seated, arms‑only jack that strengthens the shoulder abductors while reinforcing upright posture and controlled scapular motion. From a stable stool, you raise both arms out to the sides and lower them with smooth, symmetrical control, emphasizing motion at the glenohumeral joint with coordinated scapular upward rotation. Primary work comes from the middle deltoid, with assistance from the anterior deltoid; the trapezius and serratus anterior guide the shoulder blades, and the rotator cuff helps stabilize the humeral head. Because the lower body remains planted, this variation reduces balance demands and lets you focus on neutral spine, level ribs, and a quiet neck. A thumbs‑up or palms‑forward hand position promotes slight external rotation, which can help many lifters maintain space at the front of the shoulder during abduction. Keep the range to shoulder height or a comfortable, pain‑free arc, prioritizing crisp mechanics over speed.
- Muscle Groups: Delts, Shoulders
- Target Muscles: Deltoid - Lateral
- Assisting Muscles: Deltoid - Anterior
- Stabilizing Muscles: Infraspinatus, Serratus Anterior, Subscapularis, Supraspinatus, Trapezius - Lower Fibers
- Body Area: Upper Body
- Body Parts: Shoulders
- Body Surface: Side
- Body Symmetry: Bilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Shoulder Abductors
- Joint Involvement: Single-joint
- Muscle Location: Side Shoulder
- Movement Direction: Lateral
- Muscle Position: Lateral
- Gender: Female
How To Do The Sitting Jack On A Padded Stool Exercise
‘- Use a solid, non‑rolling padded stool. Sit near the front edge with feet flat, hip‑width, knees roughly 90°, and weight centered over both sit bones.
– Stack torso tall: ears over shoulders over hips; brace lightly to keep a neutral spine and level ribs.
– Let arms rest at your sides with elbows softly extended and wrists neutral; thumbs pointing forward.
– Set shoulders gently: draw shoulder blades slightly down and back without shrugging.
– Raise both arms out to the sides in the frontal plane to about shoulder height, thumbs up or palms slightly forward; keep neck long.
– Avoid rib flare, lumbar arching, or forward head as the arms rise; move primarily at the shoulders.
– Lower the arms with control, allowing the shoulder blades to rotate downward smoothly.
– Maintain even tempo and posture for each repetition, staying within a comfortable, pain‑free range.
Sitting Jack On A Padded Stool Tips
‘- Sit near the front of a solid, non-rolling padded stool with feet flat, hip-width, knees about 90°, and weight centered over both sit bones.
– Stack ears over shoulders over hips and lightly brace to maintain a tall torso, neutral spine, and level ribs.
– Let arms rest at your sides with elbows softly extended, wrists neutral, and thumbs pointing forward before you start the motion.
– Gently set your shoulders by drawing the shoulder blades slightly down and back without shrugging.
– Raise both arms out to the sides in the frontal plane only to about shoulder height.
– Use a thumbs-up or palms-forward hand position to maintain slight external rotation during abduction.
– Keep your neck long and quiet, avoiding forward head movement or shrugging as the arms rise.
– Avoid rib flare and lumbar arching by keeping the motion primarily at the shoulders with coordinated scapular rotation.
– Lower the arms with smooth, symmetrical control, letting the shoulder blades rotate downward.
– Maintain an even tempo and consistent posture, staying in a comfortable, pain-free range and prioritizing crisp mechanics over speed.
Sitting Jack On A Padded Stool Beginner Introduction
The Sitting Jack on a padded stool is a seated, jack‑style arm movement that centers on shoulder strength and postural control. Performed while sitting upright, the legs stay grounded and relaxed, so attention shifts to how the arms travel out to the sides and back down in a smooth, even rhythm. The main effort comes from the shoulders, with help from the upper back, chest, and the smaller muscles that steady the shoulder joint and guide the shoulder blades.
This exercise highlights clean, symmetrical motion rather than speed or impact. The torso remains tall and steady, with the neck at ease while the arms move. Hands are slightly rotated outward, which can feel more spacious at the front of the shoulders as the arms lift. The path of the arms generally reaches around shoulder level and stays within a comfortable, pain‑free range, emphasizing controlled movement and consistent alignment from repetition to repetition.