Official protocol by Impellizzeri et al. / Soccer Research · Speed Endurance
RSA Protocol (6×40m Shuttle COD)
Evaluate repeated sprint ability with 180° change-of-direction over 40m shuttles
Primary measureMean Time & Fatigue Index (%)
CategorySpeed Endurance
FormatRSA
Pacing audioManual / Camera
Standardized testing protocol
6 shuttle sprints of 20+20m with 180° turn and 25 seconds passive recovery.
Required field equipment
40-meter shuttle course (20+20m), photocells or timing gates
Calculation formula & scoring
Time4Test automates this equation directly during the session:
Best Sprint, Mean Sprint, Performance Decrement (%).
Scientific reference
Impellizzeri, F. M., et al. (2008). Repeated-sprint ability in football.
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