“…Movement characteristics between people with and without low back pain overlap but vary substantially (Knechtle et al., 2021; Laird et al., 2014; Laird et al., 2019) in speed, range, flexion‐relaxation response, and lumbo‐pelvic synchrony (Laird et al., 2018), inside and outside clinic settings (Gizzi et al., 2018; Roeser et al., 2019), but intervening to change them has produced mixed reports of change in pain and function (Farragher et al., 2019; Kent et al., 2015; Laird et al., 2012; van Dieën et al., 2019). Although physiotherapists routinely observe and interpret pain‐related movement quality (Van Dijk, Smorenburg, Visser, Heerkens, & Nijhuis‐van der Sanden, 2017), no adequate assessment instruments exist (Van Dijk et al., 2020).…”