Aelastic

16/03/2026

07/03/2026

Use Cycling Anatomy, Second Edition, to ensure your clients are prepared for every challenge that comes their way, from steep inclines to slick terrains.
Utilizing the same methods that elite cyclists use, you can employ this well-rounded collection of 89 strength and conditioning exercises to maximize cycling power, speed, and endurance and to improve your clients’ cycling performance. Each exercise includes clear step-by-step descriptions and full-color anatomical illustrations that highlight the primary muscle being used. You’ll find dozens of variations that use a wide range of training equipment so you can modify exercises to target specific areas and minimize common cycling injuries.

01/03/2026

Riorganizza l’ equilibrio … attiva la tua energia

This is one of those images I have to look at more than once to check my understanding.

Anteversion.
Retroversion.
Torsion.

It can feel like a bit of a minefield.

Sometimes I think the real skill isn’t memorising it once — it’s being willing to revisit it, re-check it, and refine your thinking as you go.

Clinical reasoning isn’t about knowing everything. It’s about staying curious enough to keep relearning the details that matter.

25/02/2026

Cuboid Locking Mechanism — The Lateral Column Stabilizer of the Foot 👣

The cuboid locking mechanism is a key biomechanical concept that explains how the outer (lateral) side of the foot becomes stable during weight-bearing and push-off. At the center of this mechanism is the cuboid bone and the peroneus longus tendon, which runs behind the lateral ankle and then across the plantar surface of the foot. Their interaction creates a dynamic pulley system that helps convert the foot into a rigid lever when needed.

As the peroneus longus contracts, its tendon tightens around the cuboid groove and tunnel. This produces a compressive and directional force that helps seat and stabilize the cuboid against surrounding bones. The effect is a “locking” of the lateral column — reducing excessive motion at the calcaneocuboid joint and improving force transfer from rearfoot to forefoot during late stance.

Biomechanically, this locking is especially important during the transition from shock absorption to propulsion. Early in stance, the foot must stay adaptable. But as the body moves forward, the foot must stiffen. The peroneus longus–cuboid interaction assists this shift by stabilizing the lateral column while also helping plantarflex the first ray, supporting medial arch efficiency at the same time. It’s a cross-foot coordination system — lateral lock with medial drive.

If this mechanism is impaired — due to peroneal weakness, tendon irritation, cuboid positional faults, or chronic ankle instability — the lateral foot may remain too mobile. This can lead to lateral column pain, reduced push-off efficiency, recurrent ankle sprains, or feelings of midfoot instability. That’s why peroneal strengthening, balance training, and proper load management are central in rehab.

In simple terms, the cuboid locking mechanism is the foot’s lateral stability switch — powered by the peroneus longus — helping your foot transform from a flexible adapter into a strong propulsion lever with every step. 💪

12/02/2026

In dinamica solo con aeLASTIC

Biomechanics of Lower Crossed Pattern (Anterior Pelvic Tilt Syndrome)

This posture pattern represents a classic lower crossed muscle imbalance, where one diagonal chain of muscles becomes tight while the opposite diagonal chain becomes weak. The result is altered pelvic alignment, inefficient load transfer, and increased mechanical stress on the lumbar spine and hips.

In this pattern, the hip flexors and lumbar back extensors are tight/overactive, while the abdominals and gluteal muscles are weak/underactive. Because these groups sit opposite each other across the pelvis, their imbalance creates a force “cross” that pulls the pelvis into anterior tilt and increases lumbar lordosis.

🔬 Pelvic & Spinal Mechanics
Tight hip flexors pull the pelvis downward and forward anteriorly. At the same time, tight lumbar extensors increase spinal compression and exaggerate the lower back curve. With weak abdominals unable to counterbalance anterior pull, and weak glutes failing to provide posterior stability, the pelvis loses neutral control. This shifts the body’s center of mass and changes how forces travel through the spine and lower limbs.

🚶 Movement Consequences
During gait and functional tasks:
• Hip extension becomes limited
• Glute max contribution decreases
• Hamstrings and back extensors overcompensate
• Stride mechanics change
• Lumbar segments absorb more motion than hips

This leads to inefficient propulsion and greater shear forces at the lumbar spine and sacroiliac region.

🏃 Load Transfer Problems
Normally, the glutes and deep abdominals create a stable base for force transfer between trunk and legs. When they are weak:
• Force leaks occur across the pelvis
• Energy cost of movement increases
• Compensatory muscle recruitment rises
• Joint stress shifts to passive structures

Over time, this may contribute to low back pain, hip impingement patterns, and anterior hip tightness.

🧠 Neuromuscular Aspect
This is not just a flexibility issue — it’s a motor control problem. The nervous system begins to favor tonic (postural) muscles and down-regulate phasic (movement) muscles. Without retraining activation patterns, simple stretching or strengthening alone gives limited results.

🎯 Corrective Biomechanics Strategy
Effective correction usually includes:
• Hip flexor & lumbar extensor mobility work
• Deep abdominal activation training
• Progressive glute strengthening
• Pelvic neutral control drills
• Integrated movement retraining (hinge, squat, gait)

Restore balance across the pelvis — and mechanics across the whole kinetic chain improve.

28/01/2026

🧠 Complete Guide to Anatomical Movement Angles (Head to Toe)

Human movement occurs in three-dimensional space, and every joint movement can be described using angles around three axes—X, Y, and Z. This model breaks the entire body into measurable rotational components, making movement scientifically observable and clinically meaningful.

🔵 X-Axis Rotation (Sagittal Plane Movements)
Rotation around the X-axis primarily produces flexion and extension.

Head & Neck: Nodding the head forward and backward.

Shoulder: Arm flexion (raising forward) and extension (moving backward).

Elbow & Knee: Bending and straightening.

Hip: Hip flexion during walking and sitting, extension during standing or push-off.

Ankle: Dorsiflexion and plantarflexion during gait.

These angles are crucial for activities like walking, sitting, lifting, and running.

🔴 Y-Axis Rotation (Transverse Plane Movements)
Rotation around the Y-axis creates internal and external rotation.

Head & Neck: Turning left and right.

Shoulder & Hip: Internal and external rotation of limbs.

Torso: Trunk rotation during walking or throwing.

Knee & Ankle (functional rotation): Important for pivoting and directional changes.

Abnormal Y-axis control is often linked to gait deviations, knee injuries, and spinal stress.

🟢 Z-Axis Rotation (Frontal Plane Movements)
Rotation around the Z-axis results in abduction and adduction.

Shoulder: Lifting the arm sideways away from the body.

Hip: Side leg movements.

Torso: Lateral bending.

Ankle: Inversion and eversion for balance on uneven surfaces.

These angles are essential for postural stability and balance control.

🦴 Joint-Wise Functional Importance

Head/Neck: Orientation, vision, and balance control

Shoulder Complex: Large mobility with dynamic stability

Elbow & Wrist: Precision and functional reach

Torso: Core stability and force transfer

Hip: Power generation and gait efficiency

Knee: Load transmission and shock absorption

Ankle: Balance, propulsion, and terrain adaptation

📊 Why These Angles Matter
Understanding anatomical movement angles is fundamental in biomechanics, physiotherapy, orthopedics, sports science, ergonomics, motion capture, and rehabilitation. Even small deviations in these angles can lead to pain, inefficiency, or injury over time.