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Test-retest reliability, validity, and correlates of the 2-min walk test in outpatients with depression

Test-retest reliability, validity, and correlates of the 2-min walk test in outpatients with depression

PhysioTherapy Research International 2019: E1821

A reason for the lack of interest in physical fitness testing in mental healthcare is limited time among existing staff. This cross-sectional study investigated the test-retest reliability of the 2-min walk test (2MWT) and its concurrent validity with the 6-min walk test (6MWT) in Ugandan patients with depression. We also explored practice effects and assessed the minimal detectable change (MDC) and clinical correlates with the 2MWT. This is a cross-sectional study executed in Butabika National Referral Hospital in Kampala, Uganda. Fifty Ugandan patients with depression (15 women; median age = 29.0 years) performed twice a 2MWT, once a 6MWT, and completed the Simple Physical Activity Questionnaire (SIMPAQ), and Brief Symptoms Inventory-18 (BSI-18). The median (interquartile) 2MWT score on the first and second test were 125.5 (59.2) meters and 131.0 (57.0) meters (p = .28). The intraclass correlation was.96 (95% confidence interval [0.94, 0.98]). The MDC was 23.5 m for men and 23.4 m for women. There was no evidence of a practice effect. Scores on BSI-18 depression, SIMPAQ walking, and SIMPAQ incidental physical activity explained 66.3% of 2MWT score variance. The 2MWT is a reliable test, which can be conducted without any special equipment or substantial time demands, to provide a valid assessment of the functional exercise capacity in outpatients with depression.

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Accession: 069572257

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PMID: 31788918

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