A COMPARATIVE STUDY ON THE INDIRECT ASSESSMENT OF LEG EXTENSOR POWER USING SIMULTANEOUSLY THE JUMP-AND-REACH TEST FROM ALPHA-FIT AND THE OPTOJUMP SYSTEM
A COMPARATIVE STUDY ON THE INDIRECT ASSESSMENT OF LEG EXTENSOR POWER USING SIMULTANEOUSLY THE JUMP-AND-REACH TEST FROM ALPHA-FIT AND THE OPTOJUMP SYSTEM

Summary/Abstract: The ALPHA-FIT Project, completed in 2009 and funded by the European Union, aimed at providing a set of validated tools to assess levels of physical activity and fitness. This study seeks to assess indirectly a component of muscular fitness, namely the leg extensor power in young Romanians aged 20-29 years and also to compare the two methods of measurement using the metric band and optical sensors. The research was conducted within the UPB Sports Complex between 15 October and 1 December 2016. There were investigated 493 young people, of which 334 were males and 159 females. Indirect assessment of leg extensor power was achieved simultaneously through two tests: Jump-and-reach, according to instructions specified in the Tester’s Manual for ALPHA-FIT Test Battery for Adults Aged 18-69, and Vertical Jump, using the Optojump system and the Optojump Pro software. To analyze the results in the Jump-and-reach test, they were processed by quartile, according to the analysis used in ALPHA-FIT. Values achieved by male subjects are: 44, 48,5, 54 and 72cm for the first, second, third and fourth quartiles. Female subjects achieved the following results: 27,5, 31,5, 37 and 54 cm for the first, second, third and fourth quartiles. Simultaneously with the application of Jump-and-reach test, it was used the Optojump system, namely the Vertical Jump test. Results for the Vertical jump assessed using the Optojump system are significantly lower than those assessed through the Jump-and-reach test, between 32.18 % (female subjects, first quartile) and 23.71% (male subjects, fourth quartile).Since the ALPHA-FIT Test Battery has no reference values for the population aged 20-29 years, as regards the Jump-and-reach test, the results of this research can represent, due to the specificity and size of the investigated sample, a baseline for both Romania and other European countries.

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