Implementing true isokinetic training in Echo Mode

The Echo (Adaptive) mode was an improvement in the training system of Vitruvian, but it has a key limitation: it only works during the concentric phase of a movement (when the muscle shortens). During the eccentric phase (when the muscle lengthens), it simply mirrors the concentric phase, acting as an "amplifier" rather than providing independent control.

This approach has some drawbacks:

• According to this article (https://simplifaster.com/articles/eccentric-metrics-gymaware-quantify-training/), "Using the concentric 1RM to determine eccentric load is not ideal because it assumes a fixed relationship between concentric and eccentric muscle performance."

• Additionally, research (https://pmc.ncbi.nlm.nih.gov/articles/PMC10185641/) shows that the ratio of eccentric to concentric strength is higher than what can be set on Vitruvian's interface (100% to a maximum of 130%). The study notes that "eccentric muscle strength is about 40% greater than concentric muscle strength," suggesting that the ideal setting would be around 140%.

The best solution would be for the Echo mode to be isokinetic (maintaining a constant speed) during both the concentric and eccentric phases.

Is Vitruvian planning to introduce a true isokinetic mode that works in both the concentric and eccentric phases?