Journal of Athletic Training
Context The accurate evaluation of self-reported changes in function throughout the rehabilitation process is important for determining patient progression. Currently, how a response shift (RS) may affect the accuracy of self-reported functional assessment in a population with chronic ankle instability (CAI) is unknown.
Objective To examine the RS in individuals with CAI after a 4-week multimodal rehabilitation program.
Design Controlled laboratory study.
Patients or Other Participants Twenty adults (5 men, 15 women; age = 24.35 ± 6.95 years, height = 169.29 ± 10.10 cm, mass = 70.58 ± 12.90 kg) with self-reported CAI participated. Inclusion criteria were at least 1 previous ankle sprain, at least 2 episodes of the ankle "giving way" in the 3 months before the study, and a score ≤24 on the Cumberland Ankle Instability Tool.
Intervention(s) Individuals participated in 12 intervention sessions over 4 weeks and daily home ankle strengthening and stretching.
Main Outcome Measure(s) Patient-reported outcomes (PROs) were assessed at 4 times (baseline, preintervention, postintervention, and 2-week follow-up). At the postintervention and 2-week follow-up, participants completed then-test assessments to measure RS. Then-test assessments are retrospective evaluations of perceived baseline function completed after an intervention. The PROs consisted of the Foot and Ankle Ability Measure-Activities of Daily Living and Sport subscales, the modified Disablement in the Physically Active scale physical and mental summary components, and the Fear-Avoidance Beliefs Questionnaire Physical Activity and Work subscales. We used repeated-measures analyses of variance to compare preintervention with then-test measurements. Individual-level RSs were examined by determining the number of participants who experienced preintervention to then-test differences that exceeded the calculated minimal detectable change.
Results We did not identify an RS for any PRO (F > 2.338, P > .12), indicating no group-level differences between the preintervention and retrospective then-test assessments. Individual- level RS was most prominent in the Foot and Ankle Ability Measure-Sport subscale (n = 6, 30%) and the Fear-Avoidance Beliefs Questionnaire Physical Activity subscale (n = 9, 45%).
Conclusions No group-level RS was identified for any PRO after a 4-week multimodal rehabilitation program in individuals with CAI. This finding indicates that traditional assessment of self-reported function was accurate for evaluating the short-term effects of rehabilitation in those with CAI. Low levels of individual-level RS were identified.
Original Publication Citation
Powden, C. J., Hoch, M. C., Jamali, B. E., & Hoch, J. M. (2019). Response shift after a 4-week multimodal intervention for chronic ankle instability. Journal of Athletic Training, 54(4), 397-402. doi:10.4085/1062-6050-345-17
Powden, Cameron J.; Hoch, Matthew C.; Jamali, Beth E.; and Hoch, Johanna M., "Response Shift After a 4-Week Multimodal Intervention for Chronic Ankle Instability" (2019). Rehabilitation Sciences Faculty Publications. 62.