NCT01790581

Brief Summary

Chronic Ankle Instability (CAI) is a health condition that results in repeated ankle sprains and other residual impairments. CAI has been linked to many different causative factors including sensory and motor deficits that affect the global function of the sensorimotor system as well as the patient. Over the past 20 years, strong evidence has been generated to support balance training as an effective intervention strategy in the CAI population. Unfortunately, most investigations have focused solely on maximizing motor output through balance training, while ignoring the full spectrum of sensorimotor dysfunction associated with CAI. There may be advantageous sensory-targeted interventions that augment the effects of balance training and lead to greater enhancements of functional outcomes for CAI. However, this possibility has not been systematically explored. Sensory-targeted ankle rehabilitation strategies (STARS), such as joint mobilization and plantar massage have resulted in improved sensorimotor function in those with CAI. However, only a single STARS (i.e. stochastic resonance) has been investigated in combination with balance training. While the combined effects were greater than those of balance training alone, stochastic resonance requires relatively expensive equipment that is not commercially available. Thus, the purpose of this investigation is to test the hypothesis that combining low cost STARS (e.g. plantar massage and joint mobilizations) with balance training will result in greater sensorimotor and functional improvements in those with CAI than balance training alone.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2013

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2013

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

February 8, 2013

Completed
5 days until next milestone

First Posted

Study publicly available on registry

February 13, 2013

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2014

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2014

Completed
23 days until next milestone

Results Posted

Study results publicly available

December 24, 2014

Completed
Last Updated

July 11, 2017

Status Verified

July 1, 2017

Enrollment Period

1.9 years

First QC Date

February 8, 2013

Results QC Date

December 4, 2014

Last Update Submit

July 6, 2017

Conditions

Keywords

Chronic Ankle Instability

Outcome Measures

Primary Outcomes (2)

  • Balance

    Dynamic balance will be assessed with the Star Excursion Balance Test (SEBT). This test requires a person to maintain their balance on a single limb while reaching as far as they can (with their other leg) in 3 different directions (forward, back-left, and back-right).

    Balance at 1-day post intervention

  • Self-assessed Disability

    2 questionnaires regarding self-assessed disability during activities of daily living and sport will be completed. The questionnaires will include the Foot and Ankle Ability Measure, and the Foot and Ankle Ability Measure-Sport. The FAAM contains 21 activity related items (max score of 84) while the FAAM-S contains 8 activity related items (max score of 32). Lower percentages (patient's score divided by max score) represent greater disability, and both FAAM and FAAM-S scores have been found to be reliable and precise (r=0.89, SEM= 2.1 and r=0.87, SEM= 4.5, respectively) in people with CAI.

    Disability to 1-day post intervention

Secondary Outcomes (3)

  • Balance

    Change from baseline balance at 1-week post intervention

  • Self-assessed Disability

    Change from baseline disability at 1-week post intervention

  • Self-assessed Disability

    Change from baseline disability at 1-month post intervention

Study Arms (2)

Balance Training

ACTIVE COMPARATOR
Behavioral: Balance Training

Balance Training w/ STARS

EXPERIMENTAL
Behavioral: Balance TrainingBehavioral: STARS

Interventions

This is a 4-week supervised balance training program that has been previously validated in those with CAI by improving subjective and objective measures of function. During the 4-week program, subjects will complete three 20-25 minute sessions a week for a total of twelve supervised training sessions. The specific exercises and repetitions that will be performed per training session will include: 1) hop to stabilization (10 repetitions per direction), 2) hop to stabilization and reach (5 repetitions per direction), 3) unanticipated hop to stabilization (3 repetitions), 4) progressive single limb stance balance activities (3 repetitions), and 5) progressive single limb stance activities with eyes closed (3 repetitions).

Balance TrainingBalance Training w/ STARS
STARSBEHAVIORAL

The STARS intervention will consist of 4 unique sensory-targeted interventions: calf stretching, ankle joint traction, anterior/posterior ankle joint mobilizations, and plantar massage. These four techniques target 3 types of sensory pathways (musculotendinous, articular, and plantar cutaneous, respectively) and will be applied in the same order for all treatment sessions: 1) 60-second calf stretch, 2) 30-second ankle traction, 3) 30-second mobilization, 4) 2-minute plantar massage, 5) 30-second ankle traction, and 6) 30-second mobilization.

Balance Training w/ STARS

Eligibility Criteria

Age18 Years - 35 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Males and females between the ages of 18 and 35.
  • A history of at least one episode of "giving way" within the past 3 months.
  • Answering 4 or more questions of "Yes" on the Ankle Instability Instrument (AII).
  • Score of \<90% on the self-reported Foot and Ankle Ability Measure (FAAM).
  • Score of \<80% on the FAAM Sport.

You may not qualify if:

  • Known balance and vision problems.
  • Acute lower extremities and head injuries that occurred \<6 weeks ago.
  • Chronic musculoskeletal conditions known to affect balance.
  • A history of ankle surgeries to fix internal derangements.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of North Carolina at Charlotte

Charlotte, North Carolina, 28223, United States

Location

Related Publications (1)

  • McKeon PO, Ingersoll CD, Kerrigan DC, Saliba E, Bennett BC, Hertel J. Balance training improves function and postural control in those with chronic ankle instability. Med Sci Sports Exerc. 2008 Oct;40(10):1810-9. doi: 10.1249/MSS.0b013e31817e0f92.

    PMID: 18799992BACKGROUND

Related Links

Results Point of Contact

Title
Erik Wikstrom
Organization
UNC Charlotte

Study Officials

  • Erik A Wikstrom, PhD

    University of North Carolina at Charlotte

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 8, 2013

First Posted

February 13, 2013

Study Start

January 1, 2013

Primary Completion

December 1, 2014

Study Completion

December 1, 2014

Last Updated

July 11, 2017

Results First Posted

December 24, 2014

Record last verified: 2017-07

Locations