Özet:

In sports sciences, a lot of methods and tests are used in determining the motoric performance (speed, agility etc.) levels of sportsmen. The photocell based timing systems are the leading ones used in this area that are reliable and valid. The aim of the current study was to investigate the validity of Fitspeed the multi-functional sports performance measurement and training system. The participants were 30 male university students (Age:21.56±2.07 years, Length: 176.33±6.29 cm, Body Weight:68.88±6.18 kg). In order to determine the validity of Fitspeed system, data measured concurrently with Fitspeed and Newtest system which is valid and reliable were compared each other used in 10m and 30 m speed, agility (T test) and anaerobic capacity (RAST) tests. In the reactive agility test, the results of the concurrent measurements via Fitspeed and video image analysis were compared each other. A paired t test was applied for the detection of the systematic difference between the measurement systems. In order to test the validity, analyses of Intraclass Correlation Coefficient (ICC), Coefficient of Variances (CV) and Bland Altman method were used. A high level of ICC (0.98, 0.95, 0.98, 0.99, and p<0.001, respectively) and a low level of CV (1.08%, 0.51%, 0.63%, and 0.97%, respectively) were detected in the 10m and 30m sprint, T test, RAST test, and reactive agility test. Moreover, there was not any systematic bias or random error found. Consequently, the newly developed Fitspeed system can be used as a reliable and valid system.

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