Aelastic

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.

25/01/2026

Active Energy Training

🧠 Human Movement Explained Through Angles & Motion

This illustration beautifully captures the complexity of human movement using precise angular measurements. Every line, arc, and degree represents how our joints work together to create smooth, coordinated motion during walking and dynamic activities. What looks simple on the outside is actually a highly calculated biomechanical process inside the body.

The circular angle markers around the head, shoulder, elbow, hip, knee, and ankle show the range of motion (ROM) each joint can achieve. These numerical values are critical in biomechanics, physiotherapy, sports science, and rehabilitation, helping professionals understand normal movement patterns and identify restrictions or compensations.

Notice how the lower limb angles highlight hip flexion, knee extension, and ankle dorsiflexion during the swing phase of gait. Similarly, the upper limb angles demonstrate how arm swing counterbalances leg movement, improving stability and reducing energy expenditure while walking.

Such diagrams are widely used in gait analysis labs, orthopedic assessments, and rehabilitation planning. They allow clinicians to compare pathological gait patterns—such as those seen in neurological or musculoskeletal conditions—with normal biomechanical values, leading to more accurate diagnosis and targeted treatment.

In short, this visual is a reminder that movement is mathematics in motion. Every step we take is governed by angles, forces, and timing—working silently to keep us balanced, efficient, and upright.

🔬 Biomechanics | Human Motion | Science of Movement
👍 Follow for more visuals that decode the science behind everyday actions.

21/01/2026

This image illustrates sagittal-plane gait biomechanics by showing how different muscle groups generate and control forces during support (stance) and propulsion (push-off) phases of walking. The skeleton is depicted in mid-gait, with the trailing limb completing propulsion and the leading limb accepting body weight. The colored arrows represent direction and dominance of muscle force vectors, highlighting how muscles cooperate to stabilize joints and move the body forward.

During the support (stance) phase, when the foot is in contact with the ground, vector dominance favors the hip external rotators, hamstrings (ischiocrural muscles), and triceps surae (gastrocnemius–soleus complex). The external rotators help control femoral rotation, preventing excessive internal rotation and maintaining hip stability. At the knee, the hamstrings and triceps surae act synergistically to provide dynamic knee stabilization, limiting excessive flexion or collapse. This stabilizing action is represented by the darker arrows around the knee and ankle, emphasizing control rather than forward motion.

As gait progresses into the propulsion phase, the biomechanical demand shifts. Here, vector dominance moves toward the adductors, hip flexors, and triceps surae. The adductors play a key role in stabilizing the femur within the acetabulum and assisting forward transfer of the body’s center of mass. Hip flexors contribute to limb advancement, while the triceps surae become the primary propulsive engine, generating forward and upward force to push the body ahead. The magenta and blue arrows indicate this forward-directed force transmission through the lower limb.

The image also highlights the interdependence of hip, knee, and ankle mechanics. Forces generated at the ankle during push-off influence knee stability and hip motion upstream. Any alteration in timing, strength, or coordination—such as reduced ankle push-off or delayed hip activation—can disrupt this kinetic chain. This is why deviations at the ankle during stance or at the knee during propulsion can lead to compensatory strategies and muscular overload.

Clinically, the diagram emphasizes that normal gait is not driven by isolated muscles, but by balanced vector interactions across multiple joints. When this physiological modulation is altered—such as excessive adductor dominance or insufficient plantarflexor push-off—functional imbalance develops. Over time, this can manifest as inefficient gait, increased energy expenditure, joint stress, and pathological movement patterns, particularly relevant in neurological and musculoskeletal conditions.

In summary, this image visually explains how muscle forces shift from stabilization to propulsion during walking, demonstrating that efficient gait depends on precise timing, direction, and coordination of muscular vectors throughout the lower limb.

11/01/2026

How to Actually “Fix” Scoliosis

Scoliosis isn’t just a crooked spine.
It’s a load and control problem.

Trying to force the spine straight often increases stress.
What actually helps is improving how load moves through the hips, pelvis, and core.

What to focus on:

• Hip mobility
Limited hip motion forces the spine to rotate and side-bend more than it should.

• Pelvic control
An uneven pelvis changes how force transfers into the spine.

• Core stability
The spine needs support where movement is excessive, not more stretching.

• Posture during movement
How you stand, walk, and train matters more than holding a static posture.

• Better movement patterns
Reducing repeated stress on the same spinal segments helps long-term.

This won’t magically straighten a spine.
But it can reduce pain, improve function, and make scoliosis more manageable by addressing how your body handles load.

11/01/2026

06/01/2026

Allenarsi SI, ma con

31/12/2025

A new year is about to begin. I wish you the small changes that can make a difference.