Single-leg squat postural sway reliability: how many trials to analyze for chronic low back pain?

HIGHLIGHTS

• What: This study investigated natural SLS performance and therefore a metronome was not used to guide the rhythm of the movement. During the study, the electrogoniometer was unavailable for 10 participants in the clinical setting, so the SLS was videoed with a mobile phone from sagittal view at 30 Hz with retroreflective ball markers on lateral distal mid-thigh, mid knee joint line and lateral malleolus, then Kinovea software (version 0.9.5) was used to create the time-angle history log. As compared to visual rating of individual joint performance the objective biomechanical measurements presented in . . .
  

   

  

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