ABSTRACT
[Purpose] To evaluate the intra- and inter-session reliability of dynamic postural control in ACL reconstruction and matched control athletes. [Subjects and Methods] By using force plate, the postural controls of both groups (20 ACLR and 20 healthy matched controls) were assessed during the transitional task from DLS to SLS. The outcome variables included COP displacement and area and the mean velocity of COP. [Results] The balance measures had moderate to high correlation for area (ICC=0.64-0.73) and rang of fore-aft (Rfa) (ICC=0.66-0.80) in the ACLR group and Rfa (ICC=0.70-0.86) in the healthy group. High to very high reliability was seen for rang of sideway (Rsw) (ICC=0.76-0.96) and mean velocity (Mv) (ICC=0.81-0.98) in ACLR and area (ICC=0.70-0.98) and Rsw (ICC=0.84-0.98) and Mv (ICC=0.89-0.97) in the healthy group. [Conclusion] Force plate measures of postural control demonstrated moderate to very high reliability in athletes with and without ACLR during the transitional task. The results of the recent study showed that the assessment of transitional task postural control in athletes with ACLR may reliably be incorporated in the evaluation of the physical function.
ABSTRACT
[Purpose] The purpose of this review was to summarize available methods and equipment which are administered to evaluate the balance in anterior cruciate ligament reconstruction. [Subjects and Methods] A literature search was performed and reviewed using the narrative approach. This study reviewed English articles concerning balance assessment methods in anterior cruciate ligament reconstruction subjects from 1985 to 2015 using the following key words: Anterior Cruciate Ligament Injury, Anterior Cruciate Ligament Reconstruction, Postural Control, Equilibrium, Balance and Stability. [Results] This review included 44 studies out of 117 initially retrieved articles. These articles were discussed in balance measurement procedure without comparing the effect of various surgical, medical or rehabilitation approaches. [Conclusion] Biodex and EquiTest, functional dynamic tests are of choice in the evaluation and tracking of anterior cruciate ligament reconstruction subjects. Force plate parameters provide information regarding strategies of static postural control and is not sensitive enough to challenge postural control system in physical activities.
ABSTRACT
PURPOSE: To determine the intra- and inter-session reliability of balance and cognitive performance in anterior cruciate ligament-deficient (ACLD) and ACL-reconstructed (ACLR) and matched athletes. METHODS: Using SMART EquiTest, recovery reactions of the groups were assessed during single-leg standing, following medium and large forward perturbations with and without performing a cognitive (Stroop) task. The outcomes included reaction time (RT), latency and amplitude for balance and error ratio (ER) and RT for cognitive performance. The participants of each group repeated the tests 2-7 days after the first session. Intraclass correlation coefficient (ICC) and standard error of measurement were computed in order to assess relative and absolute reliability, respectively. RESULTS: Single- and dual-task balance measures had moderate to very high reliability in ACLD (ICC = 0.63-0.88), ACLR (ICC = 0.62-0.93) and control (ICC = 0.69-0.98) athletes. The ICCs for RT of Stroop were between 0.87 and 0.90 in ACLD, between 0.70 and 0.74 in ACLR and between 0.66 and 0.70 in controls and for ER of Stroop were between 0.36 and 0.90 in ACLD, between 0.42 and 0.49 in ACLR and between 0.41 and 0.51 in controls. CONCLUSIONS: Balance measures and RT of the cognitive task in single- and dual-task conditions have acceptable reliability and may be incorporated into the evaluation of physical and mental function of athletes following ACL injury and reconstruction. ER of the cognitive task is less reliable which needs to be considered in future research. LEVEL OF EVIDENCE: Prognostic study, case-control, Level III.
