1. The validity and reliability of a novel mobile app to measure agility performance in the physically active youth population
- Author
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Miguel Ángel Pérez Sousa, Juan Antonio Escobar Álvarez, Rocío Carrasco-Zahínos, Pedro R. Olivares, Sebastián Feu, Robinson Ramírez-Vélez, Universidad Pública de Navarra. Departamento de Ciencias de la Salud, and Nafarroako Unibertsitate Publikoa. Osasun Zientziak Saila
- Subjects
validity ,Computer science ,Intraclass correlation ,Performance ,Population ,Physical fitness ,Validity ,lcsh:GV557-1198.995 ,03 medical and health sciences ,0302 clinical medicine ,Reliable ,Statistics ,030212 general & internal medicine ,lcsh:Sports medicine ,education ,Reliability (statistics) ,lcsh:Sports ,education.field_of_study ,reliability ,Valid ,business.industry ,030229 sport sciences ,Confidence interval ,Test (assessment) ,Standard error ,Agility ,lcsh:RC1200-1245 ,App ,business - Abstract
Agility is a key component of physical fitness in adolescents. However, the measurement of this variable is usually complex, requiring high cost instruments and complex software. To test the validity and reliability of a novel iPhone app (Lap Tracker Auto-timer) to measure agility performance among adolescents. Twenty-four physically active adolescents (15.7 ± 2.3 years old) participated in two testing sessions (separated by 7 days). They performed three 4 x 10 m agility test trials measured by Photocell or the iPhone app. The correlation analysis revealed high validity (r = .92; 95% confidence interval [CI] = .88 – .95), with a standard error of the estimate of 0.56 s (p < 0.001). The coefficient of variation (CV; 0.09) and intraclass correlation coefficient (ICC; .93; 95% CI = .85 – .97) showed an acceptable reliability. This study demonstrated that the iPhone App Lap Tracker Auto-timer could be a valid, reliable and low-cost tool to evaluate agility performance in adolescents. However, more studies are required to guarantee the utility of this app.
- Published
- 2020
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