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Reliability and Validity of the 2-Minute Step Test in Patients With Knee Arthroplasty

NCT05064943 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 51

Last updated 2023-09-28

No results posted yet for this study

Summary

Total knee arthroplasty (TKA) is a cost-effective treatment for end-stage knee osteoarthritis. It has demonstrable benefits such as reducing pain and improving activity and quality of life. Despite the decrease in pain after surgery, the expectations of patients regarding their physical functions are not fully realized. Physical performance tests and reporting tests are used to objectively evaluate physical function and reveal the patient's condition. It is known that physical performance tests better reflect post-surgical changes. In addition, it has been stated that there may be serious differences between the results of the reports based tests and the actual functional capacities of the patients. The 2-minute walk test and the 6-minute walk test are tests that are used in the evaluation of lower extremity physical performance and have been shown to be valid and reliable in different populations. However, a certain length of corridor is needed in order to carry out these timed walking tests. As an alternative to these, another test used in the evaluation of physical performance is the 2-minute step test. This test, which was developed in 1999, does not require much equipment and space, so the test can be easily applied in any environment. In this test, a height specific to each individual is determined (as high from the ground as the distance between the Spina iliaca anterior superior and the midpoint of the patella), and the participant is asked to raise and lower both knees, respectively, to this height for 2 minutes. These tests used in the evaluation of patients should be valid, reliable and sensitive. In clinical studies, reliability is an important psychometric property. Because stable data are necessary to provide accurate data on treatment effects or the amount of change observed over time. Another important psychometric property is validity. Validity is defined as the degree to which a concept is accurately measured in a quantitative study. Reliability studies of the 2-minute step test in active and sedentary lean adults have been conducted, but the psychometric evaluations necessary for its routine use in patients with TDP have not been performed.

Conditions

  • Total Knee Replacement
  • Reliability and Validity

Interventions

DIAGNOSTIC_TEST

2-minute step test

The participant stands and counts for 2 minutes. The minimum height to raise the knee is determined for each participant by calculating the midpoint between the patella and the anterior superior iliac spine. They are instructed to complete as many steps as possible during the 2-minute period. A verbal command is given every 30 seconds to encourage performance: "You're doing great, keep it up." If the claudication symptom becomes unbearable, the patient can stop during the test, but the time is not stopped. Patients who discontinue testing due to symptoms of claudication are encouraged to return to testing as soon as possible. An evaluator records the number of steps in the right leg.

Sponsors & Collaborators

  • Kutahya Health Sciences University

    lead OTHER

Principal Investigators

  • Hakan Akkan · Kutahya Health Sciences University

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-11-25
Primary Completion
2022-08-16
Completion
2022-08-16

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05064943 on ClinicalTrials.gov