Lying Single Arm Slide from Y to T
- Músculo objetivo
- —
- Equipamiento
- Body weight
- Parte del cuerpo
- Stretching
- Tipo
- Stretching
The Lying Single Arm Slide from Y to T is a unilateral shoulder mobility drill performed face-down on the floor. It trains the shoulder girdle through a controlled arc from an overhead diagonal (Y) to a side-extended (T) position, improving thoracic spine mobility and shoulder range of motion.
Cómo hacer el Lying Single Arm Slide from Y to T
- 1Lie face-down on a flat surface with your legs extended and your body in a straight line.
- 2Extend one arm diagonally overhead at roughly a 45-degree angle from your midline to form a Y shape, palm facing down and arm resting flat on the floor.
- 3Keep your forehead lightly resting on the floor or turn your head to the opposite side for comfort.
- 4Engage your core gently and press your hips into the floor throughout the movement.
- 5Slowly slide the extended arm outward in an arc, keeping it in contact with the floor at all times.
- 6Continue the arc until your arm is perpendicular to your torso, forming a T shape with your body.
- 7Pause briefly in the T position, feeling the stretch across your shoulder and upper back.
- 8Reverse the motion and slide the arm back along the floor to the starting Y position in a controlled manner.
- 9Complete all reps on one side before switching to the opposite arm.
Consejos de técnica
- Keep your arm in full contact with the floor throughout the entire arc — any lifting indicates the movement has exceeded your current range of motion.
- Move slowly and deliberately; the benefit comes from controlled motion through range, not speed.
- Breathe out as you slide from Y to T and breathe in as you return to help relax the shoulder girdle.
- Keep your shoulder blade (scapula) actively gliding rather than locking — think of sliding the blade down and around as the arm moves.
- If one side feels significantly tighter, spend extra time on that side and reduce the arc range until mobility improves.
Errores comunes
- Lifting the arm off the floor during the arc: this shortcuts the stretch and removes the tactile feedback that keeps the movement honest.
- Rotating the torso to compensate for limited shoulder range: trunk rotation masks the true mobility restriction and reduces the drill's effectiveness.
- Moving too quickly through the arc: fast movement relies on momentum rather than active shoulder girdle control, defeating the mobility purpose.
- Tensing the neck and upper traps: excessive neck tension compresses the cervical spine and prevents the shoulder from moving freely through its full range.
- Using too wide a starting Y angle: if the arm cannot stay flat on the floor in the Y position, shorten the angle until your shoulder flexibility allows the full position.
Preguntas frecuentes
What does the Y to T slide stretch?
The drill primarily mobilises the shoulder girdle, targeting the range of motion between shoulder flexion and abduction. It also places a gentle demand on thoracic spine extension and rotation, making it useful for improving overall upper-back and shoulder mobility.
Is the Lying Single Arm Y to T Slide good for beginners?
Yes. Because it is performed lying down with no load and the arm stays on the floor for feedback and support, it is accessible to most fitness levels. Beginners can shorten the arc range and progress gradually as shoulder mobility improves.
How many reps and sets should I do?
For a mobility warm-up, 8–12 slow, controlled reps per side for 1–2 sets is typically sufficient. As a dedicated mobility practice, 2–3 sets of 10 reps per side works well, with emphasis on quality over quantity.
What is a good alternative to the Y to T slide?
The prone Y and T raises (lifting rather than sliding) are a natural progression that adds a light loading component. Wall slides and chest-supported rear delt flies also train similar shoulder girdle patterns if floor space is limited.
When is the best time to do this exercise?
It works well as part of a dynamic warm-up before upper-body training, or as a mobility cool-down after pressing or pulling sessions. It can also be used as a standalone daily mobility drill, especially for desk workers with tight shoulders.
