SQ-LAB 511 SPD Lukkopolkimet

SQ-LAB Clipless pedals available in four different axis lengths. Conventional clipless pedals force the feet into a virtually parallel position. The longer axle of the SQlab 511 Race clipless pedal allows a physiologically natural foot position. This prevents one sided loads – especially with a calf leg head or fibula head syndrome. The version with shorter axle is suitable for small shoe sizes and small sit bone distances. The so-called Q-factor can hereby be reduced.

79,95 

2 varastossa

Kuvaus

SQ-LAB 511 Long (+8 mm) SPD Lukkopolkimet

SQ-LAB Clipless pedals available in four different axis lengths. Conventional clipless pedals force the feet into a virtually parallel position. The longer axle of the SQlab 511 Race clipless pedal allows a physiologically natural foot position. This prevents one sided loads – especially with a calf leg head or fibula head syndrome. The version with shorter axle is suitable for small shoe sizes and small sit bone distances. The so-called Q-factor can hereby be reduced.

 

Technical specifications
AREA OF USE: ROAD & MTB RACE
AXLE LENGTH (MM): +8
WEIGHT (G) / PAIR: 341g
PEDAL AXLE LENGTH IN MM (CLEAT – CRANK – DISTANCE): 63mm
AXLE: CRMO
BODY: ALUMINIUM

Pedal ergonomy

The extended axis of SQlab pedals allows a more physiologically natural foot position. This prevents strain predominantly on one side – especially in terms of shin splints

 

The anatomy of the foot

The foot skeleton consists of 28 bones.
The foot bones can be divided into following groups: tarsal bones, metatarsal bones and phalanxes. 20 muscles and over 114 tendons and ligaments ensure the required flexibility and stability of the bones to each other.
A fine nerve and blood vessel network supplies the surface and deeper muscles above and below the foot.

The foot arch

The foot has a longitudinal and transverse arch. The foot arches are held in place by cross bracing of muscles and held upright by tendons. Hence, the body weight is mainly carried by the three points of the heel, the first and the fifth metatarsophalangeal joints.

 

Bracing of the longitudinal arch:

    • plantar aponeurosis
    • ligamentum plantare longum
    • musculus flexor hallucis longus
    • foot’s short muscle group

 

Bracing of the transverse arch:

  • musculus tibialis posterior
  • musculus peronaeus profundus
Together they ‘wrap around’ the middle foot like a stirrup from the inside and outside and hold the arch up.

Function of the foot arch

The foot provides the first contact between human and the ground. In a healthy foot in normal position, the transverse- and longitudinal foot arches perform an important dampening role. The entire body weight needs to be carried by the foot when walking, while also reducing the load peaks on joints such as knees, hips, and spine. To do this, the foot arches subside upon ground contact of every step due to the load experienced, and the muscle tension builds them up again.

 

Biomechanics and cycling

On subsidence of the foot arches the foot fatigues and the direct force transmitted to the pedals is reduced. Too much movement of the foot in the cycling shoe can lead to nerve and blood vessel constrictions which result in paraesthesia or numbness.

 

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