Germain Valentin Faity

The paper shows that a 40% shoulder force reserve predicts compensatory trunk movements during reaching with shoulder strength deficits, outperforming traditional control models.

The paper shows that humans use trunk movement to increase shoulder torque reserve when reaching with an additional load, suggesting a strategy to minimize movement cost.

The paper shows that shoulder weakness leads to proximal arm non-use during movement, which can be adaptive, and suggests different treatments for psychological vs. physiological non-use.