Validity And Reliability of The Incremental Shuttle Walk Test In Type 2 Diabetes Mellitus

Validity And Reliability of The Incremental Shuttle Walk Test In Individuals With Type 2 Diabetes Mellitus

The aim of our study was to determine the validity and reliability of the incremental shuttle walk test (ISWT) in patients with type 2 diabetes mellitus.This study involves the evaluation of the validity and test-retest reliability of the ISWT.

The assessments will be performed in two separate time periods. At the first visit, baseline assessments of the patient will be performed. These assessments include the recording of demographic information and the ISWT and 6 minute walk test assessments. Both tests will be performed with a 30-minute interval between them.

A retest will be performed 1 week after the initial assessment.

Study Overview

• Status: Completed
• Conditions: Type 2 Diabetes Mellitus; Reliability and Validity

Detailed Description

Diabetes mellitus is a hormonal, metabolic and chronic disease characterised by hyperglycaemia resulting from a partial or complete deficiency of the hormone insulin or a defect in insulin-sensing receptors. Functional capacity is a vital marker for many chronic diseases, including Type 2 diabetes. Many things about the mechanism of decreased functional capacity specific to individuals with type 2 diabetes have not yet been clarified. As a result of the researches, it has been concluded that the deterioration in functional capacity is mostly related to glycaemic control and complications.

The Incremental Shuttle Walk Test (ISWT) is a maximal test that is widely used for the assessment of functional capacity and exercise tolerance because it is low cost and easy to perform. The incremental speed shuttle walk test was first described in 1992 to assess exercise capacity in patients with COPD. Compared to other field tests, ISWT is recommended because it shows high levels of maximum oxygen uptake (peak VO2) and provides physiological results closest to cardiopulmonary exercise testing (CPET), which is considered as the gold standard in the assessment of functional capacity.

The aim of our study was to determine the validity and reliability of the increasing speed shuttle walking test in patients with type 2 diabetes mellitus.

This study involves the evaluation of the validity and test-retest reliability of the ISWT.

The assessments will be performed in two separate time periods. At the first visit, baseline assessments of the patient will be performed. These assessments include the recording of demographic information and the ISWT and 6 minute walk test assessments. Both tests will be performed with a 30-minute interval between them.

A retest will be performed 1 week after the initial assessment.

• Study Type: Observational
• Enrollment (Actual): 120

Contacts and Locations

Study Locations

• Turkey (Türkiye)
  • Istanbul, Turkey (Türkiye)
    • Bezmialem Foundation University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients aged 18-65 years with type 2 diabetes mellitus

Description

Inclusion Criteria:

• HbA1c between 6.5 and 11
• No mental problems
• Able to walk independently

Exclusion Criteria:

• Lack of co-operation
• Uncontrolled diabetes,
• Patients with uncontrolled hypotension or hypertension
• Unstable cardiovascular and pulmonary conditions
• Having vertigo and various vestibular system disorders
• Those with severe neurological or severe respiratory diseases
• Patients with major musculoskeletal problems
• Pregnant women

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incremental Shuttle Walk Test	For the reliability of the incremental shuttle walk test at the retest will be performed in 1 week. It is a field test consisting of 12 levels in which walking speed is increased. It is based on the principle of walking with an acceleration at an increasing speed in the up and down direction by passing around the cones on a 10-meter track with a distance of 9 metres between two cones by accepting turns around the cones as 0.5 meters. The distance covered is recorded during the test period. The increase in speed every minute is determined by three consecutive signals and only verbal warnings are given so that the individual can catch up with the speed during the test. If the individual is unable to continue the test (reaching maximal heart rate, pain, SpO2 value <80% extreme dyspnoea, fatigue), the test is terminated and the distance is recorded.	15 minute

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Six Minute Walking Test	The validity of the incremental shuttle test will be determined by 6 minute walking test. The test is performed in a thirty metre corridor. The distance walked over 30 meters for 6 minutes is recorded. Heart rate, dyspnoea level using the Borg scale, blood pressure and oxyhaemoglobin saturation can be determined before and after the test.	10 minute

Collaborators and Investigators

• Sponsor: Ilayda Kayapinar
• Collaborators: Bezmialem Vakif University; Istanbul University - Cerrahpasa
• Investigators: Principal Investigator: Melis USUL, RA, Istanbul Kent Universty; Principal Investigator: Gülenay YILDIRIM, RA, Istanbul Galata Universty; Study Director: Gökşen KURAN ASLAN, Prof, Istanbul Universty-Cerrahpaşa; Study Director: Semiramis Özyılmaz, Assoc Prof, Bezmaialem Foundation University; Principal Investigator: Muhammed TUNÇ, Asst Prof, Bezmaialem Foundation University

Study record dates

Study Major Dates

• Study Start (Actual): March 30, 2025
• Primary Completion (Actual): July 30, 2025
• Study Completion (Actual): August 30, 2025

Study Registration Dates

• First Submitted: July 19, 2024
• First Submitted That Met QC Criteria: July 19, 2024
• First Posted (Actual): July 25, 2024

Study Record Updates

• Last Update Posted (Estimated): December 4, 2025
• Last Update Submitted That Met QC Criteria: December 3, 2025
• Last Verified: December 1, 2025

More Information

Terms related to this study

• Keywords: Diabetes Mellitus; Reliability and Validity; 6-Minute Walk Test; Incremental Shuttle Walk Test
• Additional Relevant MeSH Terms: Endocrine System Diseases; Metabolic Diseases; Glucose Metabolism Disorders; Nutritional and Metabolic Diseases; Diabetes Mellitus, Type 2; Diabetes Mellitus
• Other Study ID Numbers: 2024/272

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No