The Repeatability of Gait Speed and Physiological Cost Index Measurements in Working Adults
Objectives: To determine the performance characteristics of gait speed measurements and the physiological cost index (PCI; heart rate change/gait speed) in working adults. Methods: Gait speeds, heart rate changes, andnon-steady state PCIs were calculated in 61 volunteers who worked in our health sci...
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| Main Authors: | , , , |
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| Format: | Book |
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SAGE Publishing,
2014-04-01T00:00:00Z.
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| Summary: | Objectives: To determine the performance characteristics of gait speed measurements and the physiological cost index (PCI; heart rate change/gait speed) in working adults. Methods: Gait speeds, heart rate changes, andnon-steady state PCIs were calculated in 61 volunteers who worked in our health sciences center. These subjects completed 9 separate 100-foot walk tests in 3 separate sessions. Results: The mean heart rate change after a 100-foot walk was 16.6 ± 8.1 beats per minute. The mean gait speed was 76.1 ± 9.6 meters per minute, and the mean PCI was 0.22 ± 0.11 beats per meter. There were highly significant correlations among all measurements on the 9 separate tests (correlation coefficients 0.41-0.95); gait speed measurements had the highest correlations (0.91-0.95). In a multivariable model hypertension and arthritis were associated with reduced gait speeds. Conclusion: Gait speed, heart rate changes, and non-steady state PCIs have good repeatability when measured over short walks. This information provides a rapid physiological assessment and a method for measuring changes in functional status in healthy subjects and most patients. |
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| Item Description: | 2150-1319 2150-1327 10.1177/2150131913506226 |