The detrimental effects of force plate … The Optojump photocell system demonstrated strong concurrent validity and excellent test-retest reliability for the estimation of vertical jump height. A Kistler force platform, type 9281A (Kistler Instruments AG, Winterthur, Switzerland) was used to measure ground reaction forces from which CoP data was calculated using the two different models of force application. METHODS: Ten healthy male college students, ages 22 to 34 years, volunteered to participate in this study. just maximum jump height involve the use of force plates. ForceDecks automatically detect and analyse 15+ common force plate tests. The reliability of the system is also extremely important when measuring cutting forces. All subjects completed three individual testing sessions on three non-consecutive days. Upon hearing an au-ditory signal, participants jumped off two legs and landed on the dominant (kicking) leg in the centre of the force plate. The mobilization force of R1 was indirectly measured using the Kistler Force Plate. Reliability was assessed from 10 returning subjects. For the back squat and bench press, the GPT tether attachment site (GA) was located 10 cm from the end of the bar, with this being centred during the deadlift (Figure 1). One such force plate is the Kistler Quattro Jump® (Amherst, NY 14228). The post-test scores did show improved reliability greater than chance (ICC = 0.416; p < 0.0001). Along with maximum jump height, it also measures the force, power, and endurance of the leg muscles. Pre-test values were poor (ICC = 0.0326; p = 0.309). A typical force plate measuring 0.90 m x 0.60 m covers less than half of a 2 m step. The GRF applied by the hands in the starting position (initial force supported), peak GRF and rate of force development during takeoff, flight time, impact force, and rate of force … For example, the Kistler Type 9281E Triplanar force plate has a natural frequency of 1000 Hz (Kistler Group, Winterthur, Switzerland). In order to be able to guar- Force data were captured and analysed via an amplifier (type 9865), ... Table 2 shows the reliability of the ground reaction force (GRF) variables when 10 trials and a single trial were taken. Jump height was derived from an accelerometer (Myotest, frequency 200 Hz), optic timing system (Optojump) and from a force plate (Kistler, frequency 800 Hz) using both flight time and force impulse algorithms. These two studies are clustered together and called the “laboratory-based studies”;(iii)A discriminative validity study, called “the clinical study”,in which Qinematic™ was used in a back clinic in which LBP patients were compared to healthy controls. Additionally, the within session reliability of the drop landing and the drop vertical jump measured by the portable force plate showed high interclass correlation coefficients for examined variables of 0.979 and 9.67 for maximum landing force and 0.917 and 0.920 for time to maximum landing force, respectively. Contact mats (4, 10-13), Force platforms (4, 11, 14-16) Infrared platforms (15, 17, 18) Accelerometers (linear position transducers) (13, 19) MyotestO (MYO) (Myotest SA, Switzerland) was compared with force plate measurements (Quattro Jump@ [QUATTRO], Kistler, Swit- zerland & SPSport Software, Trins, Austria). Statistical data for the assessment of concurrent validity of the Gyko system as compared to the Kistler force-plate and the Optojump device are presented in Table 1.Compared to the Kistler force-plate, our Gyko analyses revealed significant systematic bias for mean CMJ (−0.66 cm, p < 0.01, d = 1.41) and mean SJ (−0.91 cm, p < 0.01, d = 1.69) height. The intraclass reliability coefficients for maximum jump height, force, and power were also assessed using the Kistler Quattro Jump® force plate. Characterizing reactive stepping is important to describe the response’s effectiveness. ... validity and reliability of testing. The high natural frequency of this force plate is high enough to measure the impact activities of sports, which can surpass 100 Hz (2). Also on day 0, dogs underwent gait analysis using a single piezoelectric force plate.1 1 Kistler, Amherst, NY Therefore, data for the right and left side were collected from separate passes across the plate. 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