Reliability of a timed walk test in persons with acquired brain injury

Kurt A. Mossberg

    Research output: Contribution to journalArticle

    60 Citations (Scopus)

    Abstract

    Objective: The purpose of this study was to assess the reliability of a 6-min walk test in individuals with acquired brain injury. Design: A total of 23 clients (14 men, 9 women) participated. All participants were clients in a postacute residential rehabilitation facility. The time from injury averaged 12 mo (range, 7-38 mo). Subjects were instructed to walk around a rectangular track as many times as possible during a period of 6 min. The test was performed twice, separated by 1-10 days. Heart rate was monitored continuously throughout the test, and distance traveled was recorded in meters after completion. A physiologic cost index (beats per meter) was calculated. Intraclass correlation coefficients were calculated for distance traveled, heart rate responses, and physiologic cost index. Results: The mean distance walked was 403 ± 105 m (trial 1) and 417 ± 106 m (trial 2). The intraclass correlation coefficient for distance was 0.94. The mean steady-state heart rate was 118 ± 21 beats/min (trial 1) and 117 ± 20 beats/min (trial 2), and the intraclass correlation coefficient was 0.65. The mean physiologic cost index was 0.52 ± 0.19 beats/m (trial 1) and 0.55 ± 0.22 beats/m (trial 2), and the intraclass correlation coefficient was 0.89. Conclusions: Distance traveled and the physiologic cost index demonstrated excellent reliability, whereas heart rate responses for individual minutes demonstrated only fair reliability. The individuals studied were very consistent in their efforts, despite a combination of physical and cognitive impairments. The results suggest that the 6-min walk test can be used reliably in the assessment of functional ambulation in persons with acquired brain injury.

    Original languageEnglish (US)
    Pages (from-to)385-390
    Number of pages6
    JournalAmerican Journal of Physical Medicine and Rehabilitation
    Volume82
    Issue number5
    DOIs
    StatePublished - May 1 2003

    Fingerprint

    Brain Injuries
    Heart Rate
    Costs and Cost Analysis
    Residential Facilities
    Walking
    Rehabilitation
    Walk Test
    Wounds and Injuries

    Keywords

    • Ambulation
    • Exercise
    • Measurement
    • Physiologic cost index

    ASJC Scopus subject areas

    • Rehabilitation
    • Health Professions(all)
    • Orthopedics and Sports Medicine
    • Physical Therapy, Sports Therapy and Rehabilitation

    Cite this

    Reliability of a timed walk test in persons with acquired brain injury. / Mossberg, Kurt A.

    In: American Journal of Physical Medicine and Rehabilitation, Vol. 82, No. 5, 01.05.2003, p. 385-390.

    Research output: Contribution to journalArticle

    @article{686e32c98ef549baaa7268c1cc1d6f5d,
    title = "Reliability of a timed walk test in persons with acquired brain injury",
    abstract = "Objective: The purpose of this study was to assess the reliability of a 6-min walk test in individuals with acquired brain injury. Design: A total of 23 clients (14 men, 9 women) participated. All participants were clients in a postacute residential rehabilitation facility. The time from injury averaged 12 mo (range, 7-38 mo). Subjects were instructed to walk around a rectangular track as many times as possible during a period of 6 min. The test was performed twice, separated by 1-10 days. Heart rate was monitored continuously throughout the test, and distance traveled was recorded in meters after completion. A physiologic cost index (beats per meter) was calculated. Intraclass correlation coefficients were calculated for distance traveled, heart rate responses, and physiologic cost index. Results: The mean distance walked was 403 ± 105 m (trial 1) and 417 ± 106 m (trial 2). The intraclass correlation coefficient for distance was 0.94. The mean steady-state heart rate was 118 ± 21 beats/min (trial 1) and 117 ± 20 beats/min (trial 2), and the intraclass correlation coefficient was 0.65. The mean physiologic cost index was 0.52 ± 0.19 beats/m (trial 1) and 0.55 ± 0.22 beats/m (trial 2), and the intraclass correlation coefficient was 0.89. Conclusions: Distance traveled and the physiologic cost index demonstrated excellent reliability, whereas heart rate responses for individual minutes demonstrated only fair reliability. The individuals studied were very consistent in their efforts, despite a combination of physical and cognitive impairments. The results suggest that the 6-min walk test can be used reliably in the assessment of functional ambulation in persons with acquired brain injury.",
    keywords = "Ambulation, Exercise, Measurement, Physiologic cost index",
    author = "Mossberg, {Kurt A.}",
    year = "2003",
    month = "5",
    day = "1",
    doi = "10.1097/00002060-200305000-00014",
    language = "English (US)",
    volume = "82",
    pages = "385--390",
    journal = "American Journal of Physical Medicine and Rehabilitation",
    issn = "0894-9115",
    publisher = "Lippincott Williams and Wilkins",
    number = "5",

    }

    TY - JOUR

    T1 - Reliability of a timed walk test in persons with acquired brain injury

    AU - Mossberg, Kurt A.

    PY - 2003/5/1

    Y1 - 2003/5/1

    N2 - Objective: The purpose of this study was to assess the reliability of a 6-min walk test in individuals with acquired brain injury. Design: A total of 23 clients (14 men, 9 women) participated. All participants were clients in a postacute residential rehabilitation facility. The time from injury averaged 12 mo (range, 7-38 mo). Subjects were instructed to walk around a rectangular track as many times as possible during a period of 6 min. The test was performed twice, separated by 1-10 days. Heart rate was monitored continuously throughout the test, and distance traveled was recorded in meters after completion. A physiologic cost index (beats per meter) was calculated. Intraclass correlation coefficients were calculated for distance traveled, heart rate responses, and physiologic cost index. Results: The mean distance walked was 403 ± 105 m (trial 1) and 417 ± 106 m (trial 2). The intraclass correlation coefficient for distance was 0.94. The mean steady-state heart rate was 118 ± 21 beats/min (trial 1) and 117 ± 20 beats/min (trial 2), and the intraclass correlation coefficient was 0.65. The mean physiologic cost index was 0.52 ± 0.19 beats/m (trial 1) and 0.55 ± 0.22 beats/m (trial 2), and the intraclass correlation coefficient was 0.89. Conclusions: Distance traveled and the physiologic cost index demonstrated excellent reliability, whereas heart rate responses for individual minutes demonstrated only fair reliability. The individuals studied were very consistent in their efforts, despite a combination of physical and cognitive impairments. The results suggest that the 6-min walk test can be used reliably in the assessment of functional ambulation in persons with acquired brain injury.

    AB - Objective: The purpose of this study was to assess the reliability of a 6-min walk test in individuals with acquired brain injury. Design: A total of 23 clients (14 men, 9 women) participated. All participants were clients in a postacute residential rehabilitation facility. The time from injury averaged 12 mo (range, 7-38 mo). Subjects were instructed to walk around a rectangular track as many times as possible during a period of 6 min. The test was performed twice, separated by 1-10 days. Heart rate was monitored continuously throughout the test, and distance traveled was recorded in meters after completion. A physiologic cost index (beats per meter) was calculated. Intraclass correlation coefficients were calculated for distance traveled, heart rate responses, and physiologic cost index. Results: The mean distance walked was 403 ± 105 m (trial 1) and 417 ± 106 m (trial 2). The intraclass correlation coefficient for distance was 0.94. The mean steady-state heart rate was 118 ± 21 beats/min (trial 1) and 117 ± 20 beats/min (trial 2), and the intraclass correlation coefficient was 0.65. The mean physiologic cost index was 0.52 ± 0.19 beats/m (trial 1) and 0.55 ± 0.22 beats/m (trial 2), and the intraclass correlation coefficient was 0.89. Conclusions: Distance traveled and the physiologic cost index demonstrated excellent reliability, whereas heart rate responses for individual minutes demonstrated only fair reliability. The individuals studied were very consistent in their efforts, despite a combination of physical and cognitive impairments. The results suggest that the 6-min walk test can be used reliably in the assessment of functional ambulation in persons with acquired brain injury.

    KW - Ambulation

    KW - Exercise

    KW - Measurement

    KW - Physiologic cost index

    UR - http://www.scopus.com/inward/record.url?scp=0037404572&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0037404572&partnerID=8YFLogxK

    U2 - 10.1097/00002060-200305000-00014

    DO - 10.1097/00002060-200305000-00014

    M3 - Article

    C2 - 12704280

    AN - SCOPUS:0037404572

    VL - 82

    SP - 385

    EP - 390

    JO - American Journal of Physical Medicine and Rehabilitation

    JF - American Journal of Physical Medicine and Rehabilitation

    SN - 0894-9115

    IS - 5

    ER -