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Functional performance testing in participants with functional ankle instability and in a healthy control group.

Abstract：

CONTEXT:Functional ankle instability (FAI) affects a large part of the population. Inconsistent findings have been reported regarding the existence of functional performance deficits in individuals with FAI. OBJECTIVE:To examine functional performance in participants with FAI compared with participants in a control group during 2 hopping tests. DESIGN:Case-control study. SETTINGS:Athletic training research laboratory. PATIENTS OR OTHER PARTICIPANTS:There were 40 college-aged individuals who participated in our study: 20 with FAI and 20 without FAI. We defined FAI as history of an ankle sprain and residual episodes of "giving way." INTERVENTION(S):Participants completed 2 functional performance tests (FPTs): the single-limb hopping and the single-limb hurdle tests. MAIN OUTCOME MEASURE(S):Time to complete each test was recorded. Following each FPT, participants were asked if their ankles felt unstable during the test. RESULTS:We found no difference between participants in the FAI and control groups for the hopping or hurdle tests (P > .05). When asked if their ankles felt unstable during the FPTs, approximately half of the participants in the FAI group and none of the participants in the control group reported a feeling of instability. Subsequently, a secondary analysis of variance was calculated with participants grouped into 3 categories: control participants, FAI participants reporting instability symptoms during FPT (FAI-S), and FAI participants not reporting instability symptoms during FPT (FAI-NS). Results revealed a difference among the 3 groups for the single-limb hopping test (P < .01). Post hoc analysis revealed a difference between the FAI-S participants and both the control and the FAI-NS participants. No difference was identified for the single-limb hurdle test (P = .41). CONCLUSIONS:The FAI-S participants had performance deficits during the single-limb hopping test. Therefore, clinicians could use this simple hopping test as an additional method to determine the presence of FAI.

journal_name

J Athl Train

journal_title

Journal of athletic training

authors

Buchanan AS,Docherty CL,Schrader J

doi

10.4085/1062-6050-43.4.342

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

342-6

issue

eissn

1062-6050

issn

1938-162X

journal_volume

pub_type

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Functional performance testing in participants with functional ankle instability and in a healthy control group.