Figure 2. Vertical jump height values acquired: (A) Squat jump (SJ) in force platform, high speed camera/ Kinovea system (HSC/KS), and the Polar V800/Stride Sensor. (B) Countermovement jump (CMJ) in force platform, HSC/KS, and the Polar V800/Stride Sensor. (C) SJ in test-retest assessment in the three devices. (D) CMJ in test-retest assessment in the three devices. * significant differences, p = 0.001.