The dark side of the treadmill walking test

We read with interest the review by Robinson et al. [1]. They found that treadmill training improved gait speed by about 21cm/s in people with Parkinson's disease (PwPD). This value exceeded the minimal clinically important difference (MCID). However, in our opinion, this change in gait speed is overestimated and affected by the methods of one of the studies [2], included in Fig. 2 of the review [1].
Source: Physiotherapy - Category: Physiotherapy Authors: Tags: Letter to the Editor Source Type: research