Figure 3. The Bland Altman plots in the reliability (test-retest) assessment: (A) the Polar V800/Stride Sensor in squat jump (SJ). (B) Force platform in SJ. (C) High-speed camera/ Kinovea system (HSC/KS) in SJ. (D) The Polar V800/Stride Sensor in countermovement jump (CMJ). (E) Force platform in CMJ. (F) HSC/KS in CMJ. R² refers to proportional bias. Dif. or differ. = differences.