Blogs
Latest articles from ENSTA.
- Training
Muscle and pulse oxygen sensors measure different signals
A muscle oxygen sensor estimates a local tissue optical signal, while a pulse oximeter estimates arterial oxygen saturation at a peripheral site. Keep their device labels, locations, and intended uses separate instead of comparing the displayed percentages as one measure.
Mr.Apps · Nov 3, 2026
- Training
Active and passive range of motion need separate records
Active range of motion is produced by the person, while passive range is produced by an examiner or external force. Record the method, joint, position, side, and measurement source separately because these angles are not interchangeable.
Mr.Apps · Nov 3, 2026
- Training
A rowing damper number does not identify the drag factor
A damper number describes an air-control setting on some rowing ergometers, while drag factor describes the flywheel response measured by a compatible monitor. Record each value with the machine model instead of treating the numbers as interchangeable.
Mr.Apps · Nov 3, 2026
- Training
Eccentric-only repetitions need a clear lifting-log label
An eccentric-only repetition records a lengthening action under load without an active shortening phase in the same repetition. Preserve the movement sequence, assistance, range, and tempo so its count is not confused with a full lift-and-lower cycle.
Mr.Apps · Nov 3, 2026
- Training
Running pace and running speed use reciprocal units
Running pace measures time per distance, while speed measures distance per time. Keep the original unit and time basis visible when converting one display into the other.
Mr.Apps · Nov 3, 2026
- Training
Virtual cycling distance follows the simulation's rules
A virtual cycling app calculates speed and distance from its own inputs and route model. Keep that simulated value separate from wheel-based or outdoor distance when comparing activity records.
Mr.Apps · Nov 3, 2026
- Training
Single-sided cycling power relies on a symmetry assumption
A single-sided power meter measures one leg and may double that value to estimate total cycling power. Preserve which side and device produced the number so an estimate is not mistaken for a bilateral measurement.
Mr.Apps · Nov 3, 2026
- Training
Power meter zero offset needs its own setup record
A power meter zero offset records the sensor's unloaded baseline at a particular time. Keep the meter identity, procedure, conditions, and returned status separate from training targets and workout power values.
Mr.Apps · Nov 3, 2026
- Training
Handrail support changes the context of a treadmill session
Treadmill handrail use can change the movement task even when speed and incline stay constant. Record whether support was light, intermittent, or sustained so session comparisons do not assume the machine measured details it missed.
Mr.Apps · Nov 3, 2026
- Training
Treadmill incline percentages are not angles in degrees
Treadmill grade percentages and angles in degrees describe the same slope through different relationships. Preserve the machine's displayed unit and source so a workout setting is not mistaken for a measured angle.
Mr.Apps · Nov 3, 2026