Torsion Control Index (TCI): measurement of midfoot shoe stability, in inch-pound units (in.-lbs.). TCI is measured through actively twisting a shoe around the longitudinal axis of the shoe, from the heel to the area of the toes joints, simulating rotational forces of the foot, and measuring the shoe’s resistance to this motion.
Vertical Compression Index (VCI): measurement of hindfoot shoe stability, in millimeters (mm). VCI is measured through compression of the heel portion of the shoe under a fixed amount of pressure, thereby measuring how the structure of the shoe controls rearfoot motion.
Rebound Index (RI): indicator of energy return of shoe to the foot, in millimeters (mm). RI is measured through compression of the heel portion of the shoe under a fixed amount of pressure, and then determining how much force the shoe exerts on the foot.
Shoe Stability Index (SSI):
indicator of shoe stability, as an index. SSI is derived through mathematically combining the quantified measurements of midfoot stability (TCI) and hindfoot stability (VCI), indicating the shoe’s overall ability to control the motion of the foot.

FEED TWITTER

Gravity IV – Newton Running

Dec 4, 2015

Ultra Boost – Adidas

Dec 4, 2015

Gel-Nimbus 17 – Asics

Dec 4, 2015

Glycerin 13 – Brooks

Dec 4, 2015

Ultimate 2 – Ryka

Dec 4, 2015

Go Run Ultra 2 – Sketchers

Dec 4, 2015

Triumph ISO 2 – Saucony

Dec 4, 2015

Air Zoom Pegasus 32 – Nike

Dec 4, 2015

Charged Bandit – Under Armour

Dec 4, 2015

980v2 Fresh Foam Boracay – New Balance

Dec 4, 2015

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