Data measured by the Assioma Power Meter Pedals

Tech & Tests

Assioma power sensors are positioned on the pedals, exactly where the cyclist's force is applied, to provide accurate power data in watts but also other useful metrics, such as:


  • Left/Right Balance: indicates, as a percentage, the power individually generated by the left leg and the right leg.

    The L/R Power Balance values allow you to monitor the dominant/non-dominant leg ratio and observe how this varies in relation to different racing and fitness conditions. This can be useful to correct penalizing imbalances: also in post-traumatic rehabilitation programs.

    Unlike others, the Assioma power meter pedals return these metrics through real dual-sided measurements, not estimates (see Table).


  • Cadence: indicates the number of revolutions made by the pedal in one minute (rpm).

    The in-built cadence sensor of Assioma constantly detects and transmits this value to the bike computer: making it therefore superfluous to use a separate cadence sensor.


  • Torque Effectiveness (TE): indicates, as a percentage, how much of the power generated during one pedal stroke actually contributed to the propulsion of the cyclist.
    This value is based on the Positive Power (P +), that pushed the pedal forward, and the Negative Power (P -), that pushed in the opposite direction, applied to the crank over each revolution.
    Negative Power can be countered by helping the foot to "go back up" in the recovery phase: pulling it by the engaged shoe.
    A 100% Torque Effectiveness occurs when no Negative Power has been accumulated during a pedal stroke. The typical TE value may vary between 60% and 100%.
    Assioma UNO indicates the Torque Effectiveness value for the left leg; whereas Assioma DUO provides data for both left and right leg.



  • Pedal Smoothness (PS): indicates, as a percentage, how evenly distributed the power is in a full revolution of a pedal stroke. A value of 100% means that the power is delivered constantly throughout all the revolution: the higher the value the "rounder" the pedaling.

    Pedal Smoothness is identified by correlating the Average Power (Pavg) with the Maximum Power (Pmax) measured in a single 360° rotation of the pedal.

    Assioma UNO indicates the PS value of the left leg; whereas Assioma DUO provides separate data for both the left and the right leg.


Other observable parameters:

Other parameters observable through the use of the Assioma power meters connected to a bike computer, or to a smartphone, are:

  • NP® (Normalized Power®)

  • IF® Intensity Factor®; Power Zones (Z1 to Z7)

  • TSS® Training Stress Score®

  • ACL®

  • TCL®

  • Consumed Energy

  • Functional Threshold Power (FTP)
  • Power/Weight Ratio

  • W'Bal®

  • Wbal®