International Journal of Human Movement and Sports Sciences Vol. 9(6), pp. 1319 - 1323
DOI: 10.13189/saj.2021.090628
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Inter-Rater Reliability and Intra-Rater Reliability Testing of My Jump 2 Mobile Application in Measuring Countermovement Jump

Muhammad Faiz Alias ¹, Hosni Hasan ^1,*, Mohd Syafiq Miswan ², Daniyal Donny Man ^3
1 Faculty of Sports Science and Recreation, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
² Faculty of Sports Science and Recreation, Universiti Teknologi MARA Perlis, 40450 Arau, Perlis, Malaysia
³ Faculty of Sports Science and Recreation, Universiti Teknologi MARA Sarawak, 40450 Samarahan, Sarawak, Malaysia

ABSTRACT

My Jump 2 is a mobile application that is objectively valid and reliable to measure vertical jumping height. The objectives of this study are to find the inter-rater and intra-rater reliability of the My Jump 2 mobile application in measuring countermovement jump (CMJ) height. A total of 25 male recreational athletes performed CMJ for five attempts and was recorded by using iPhone 7 Plus in 240 frames per second. The videos were then rated by three raters and rated again seven days later using the My Jump 2 mobile application. An excellent degree of reliability was found between rater measurements. The average measure ICC was 1.00 with a 95% confidence interval from 1.00 to 1.000 (F(124,248)= 18867201.171, p<.001). An excellent degree of reliability was found within rater measurements. The average measure ICC was 1.00 with a 95% confidence interval from 1.00 to 1.00 (F (124,124) = 44750598.291, p<.001). This study provides evidence in supporting the use of the My Jump 2 mobile application to measure the height of the countermovement jump in a research setting. Future research is needed to study the validity and reliability of other parameters possibly measured by the My Jump 2 mobile application like force-velocity profile, jumping launch force, and power.

KEYWORDS
My Jump 2 Mobile Application, Countermovement Jump, Inter-Rater Reliability, Intra-Rater Reliability

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Muhammad Faiz Alias , Hosni Hasan , Mohd Syafiq Miswan , Daniyal Donny Man , "Inter-Rater Reliability and Intra-Rater Reliability Testing of My Jump 2 Mobile Application in Measuring Countermovement Jump," International Journal of Human Movement and Sports Sciences, Vol. 9, No. 6, pp. 1319 - 1323, 2021. DOI: 10.13189/saj.2021.090628.

(b). APA Format:
Muhammad Faiz Alias , Hosni Hasan , Mohd Syafiq Miswan , Daniyal Donny Man (2021). Inter-Rater Reliability and Intra-Rater Reliability Testing of My Jump 2 Mobile Application in Measuring Countermovement Jump. International Journal of Human Movement and Sports Sciences, 9(6), 1319 - 1323. DOI: 10.13189/saj.2021.090628.