Reliability of the Coach’s Eye Goniometer Application during Squat Exercise

This study examined the test re-test, intrarater and interrater reliability of joint kinematics from Coach’s Eye smartphone application. Twenty-two males completed a 1-repetition maximum (1-RM) assessment followed by 2 identical sessions using 5 incremental loads (20%-40%-60%-80%-90% 1-RM). Peak flexion angles at hip, knee, ankle joints were assessed 1 experienced practitioner inexperienced practitioner. The acceptable thresholds defined as intraclass correlation coefficient (ICC) (r) > 0.70 variation (CV) ≤ 10%. re-test peak hip knee reliable across 20-90% 1-RM (r 0.64; CV < 4.2%), whereas was not any loaded condition 0.70; 20.4%). No significant differences detected between trials (p 0.11). near perfect 0.90) except for 0.85). nearly 0.91) 80% 20% 0.77). Concludingly, application can produce repeatable assessments either single examiner or examiners, regardless experience level. accurately monitor squat depth.