ScholarOne - Development and test-retest reliability of an
effector-specific stop signal task in young, healthy and active adults
Abstract
Inhibitory control has high significance in sports context in terms of
performance and injury prevention. Although it steps in during complex
maneuvers such as change of direction and deceleration, it is vastly
tested using computerized tests which require a simple finger movement.
This study aims to develope and assess the test-retest reliability of an
alternative stop signal task which is specific to lower extremities and
may provide an example in transition to mobile settings. Ten healthy and
physically active participants performed the effector-specific stop
signal task developed with the Fitlight System™ with a
one-week-interval. Four different stop signal delays were adopted which
were constant within the blocks. The main outcomes were determined as
reaction time, stop signal reaction time and response accuracy. The
effect of delay and time was explored using a 4x2 ANOVA. The test-retest
reliability of each outcome was assessed using intraclass correlation
coefficient. The findings showed a significant main effect of delay and
a significant interaction of delay and time. The overall reliability of
the reaction time, stop signal reaction time and response accuracy was
substantial, whereas differences were observed among stop signal delays.
Our findings may show that the suggested effector-specific stop signal
task may provide a reliable SSRT estimation during a stepping movement.
Further studies should consider different positions and tasks to
increase ecological validity.