TY - JOUR
T1 - The validity and reliability of a novel mobile app to measure agility performance in the physically active youth population
AU - Escobar Álvarez, Juan A.
AU - Carrasco-Zahínos, Rocío
AU - Olivares, Pedro R.
AU - Feu, Sebastián
AU - Ramírez-Velez, Robinson
AU - Pérez Sousa, Miguel Ángel
PY - 2020/12/31
Y1 - 2020/12/31
N2 - 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.
AB - 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.
KW - app
KW - agility
KW - validity
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85100795666&partnerID=8YFLogxK
U2 - 10.21134/eurjhm.2020.45.9
DO - 10.21134/eurjhm.2020.45.9
M3 - Article
AN - SCOPUS:85100795666
SN - 2386-4095
VL - 45
JO - European Journal of Human Movement
JF - European Journal of Human Movement
M1 - 9
ER -