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Completed

NCT Number: NCT07186400

The Test-retest Reliability and Concurrent Validity of the Figure of Eight Walk Test and the 360° Turn Test

To the best of the authors' knowledge, there are no existing studies that have evaluated the reliability and validity of the Figure-of-Eight Walk Test (F8WT) and the 360° Turn Test (360°TT) specifically in patients with total hip arthroplasty (PwTHA). The objective of this investigation was to assess the test-retest reliability and concurrent validity of the F8WT and 360°TT within this patient population.

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Key information

Conditions

Total Hip Arthroplasty

Sex eligibility

All sexes

Study type

Observational

Primary location

Zeynep Yıldız Kızkın

Artvin, 08000, Turkey (Türkiye)

About this study

This study involves a cross-sectional design with 54 unilateral PwTHA cases. Assessments to be conducted during the first session include the F8WT, 360°TT, Timed Up and Go (TUG), and Harris Hip Score (HHS). Subsequently, the F8WT and 360°TT will be retested one hour after the initial test. The reliability of these tests will be determined using the intraclass correlation coefficient (ICC). Concurrent validity will be assessed using the Pearson correlation coefficient. Additionally, the standard error of measurement (SEM95) and minimum detectable change (MDC95) will be calculated for the F8WT and 360°TT.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • surgery performed at least 6 months prior;
  • unilateral total hip arthroplasty;
  • patients who scored at least 24 points on the Mini-Mental State Examination (MMSE).

Exclusion criteria

  • a history of additional surgery on the lower extremities;
  • bilateral THA or revision surgery;
  • severe neurological or orthopedic conditions that may influence musculoskeletal mobility or walking;
  • body mass index (BMI) of 40 kg/m² or higher;
  • lack of consent to participate in the study.

Treatment and study plan

Primary outcomes

  1. Figure of eight walk test (F8WT)

    Time frame: Baseline

    The F8WT was developed to evaluate parameters such as gait speed, balance, and directional turning capabilities. The protocol involves participants walking in a figure-eight pattern around two cones positioned 1.52 meters apart. Timing commences when participants initiate the task from the midpoint of the figure-eight trajectory and concludes upon their return to the starting location. Participants' walking directions and chosen speeds are adjusted according to individual preferences and comfort levels.

  2. Figure of eight walk test (F8WT)

    Time frame: 1 hour after baseline

    The F8WT was developed to evaluate parameters such as gait speed, balance, and directional turning capabilities. The protocol involves participants walking in a figure-eight pattern around two cones positioned 1.52 meters apart. Timing commences when participants initiate the task from the midpoint of the figure-eight trajectory and concludes upon their return to the starting location. Participants' walking directions and chosen speeds are adjusted according to individual preferences and comfort levels.

  3. 360° turn test (360°TT)

    Time frame: Baseline

    The 360°TT serves as a performance evaluation tool aimed at assessing dynamic balance capabilities. The protocol requires participants to execute a complete 360° turn in the shortest possible duration. Turn time and the number of steps employed during the maneuver are recorded using a stopwatch. A turn duration exceeding 2.1 seconds is indicative of a heightened risk of balance deterioration and potential functional impairment.

  4. 360° turn test (360°TT)

    Time frame: 1 hour after baseline

    The 360°TT serves as a performance evaluation tool aimed at assessing dynamic balance capabilities. The protocol requires participants to execute a complete 360° turn in the shortest possible duration. Turn time and the number of steps employed during the maneuver are recorded using a stopwatch. A turn duration exceeding 2.1 seconds is indicative of a heightened risk of balance deterioration and potential functional impairment.

Secondary outcomes

  1. Timed up and go test (TUG)

    Time frame: Baseline

    Physical performance will be assessed using the TUG test, which is known for its reliability among PwTHA. The procedure involved standing up from a 45 cm chair, walking along a 3-metre path, turning around, and sitting back down on the chair. It will be used to examine concurrent validity against the F8WT and 360° Turn Test.

  2. Harris hip score (HHS)

    Time frame: Baseline

    The HHS is a comprehensive, multidimensional instrument specifically designed to clinically assess patients with total hip arthroplasty (PwTHA). It consists of four distinct domains: pain, function, deformity, and range of motion (ROM). The total possible score is 100 points, with higher scores indicating better functional status. It will be used to examine concurrent validity against the F8WT and 360° Turn Test.

Sponsors and collaborators

Lead sponsor

Artvin Coruh University

Other

Registry information

Official study title

Beyond Straight Lines: The Test-retest Reliability and Concurrent Validity of the Figure of Eight Walk Test and the 360° Turn Test in Patients With Total Hip Arthroplasty

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Sep 22, 2025
Registry last updated
Mar 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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