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Reliability and validity of three functional tests in ambulatory patients with spinal cord injury
P Poncumhak1, J Saengsuwan, W Kamruecha
1Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.
Study Design:
A cross-sectional study.
Objectives:
To investigate reliability, discriminative ability and concurrent validity of three functional tests (including the 10-meter walk test (10MWT), timed up and go test (TUGT) and five times sit-to-stand test (FTSST)) using the Functional Independence Measure Locomotor (FIM-L) scores as a standard criterion.
Setting:
A tertiary rehabilitation center, Thailand.
Methods:
Subjects were 66 patients with spinal cord injury (SCI), who were able to walk at least 50 m unassisted with or without a walking device (FIM-L scores 6-7). They were tested for functional ability using the 10MWT, TUGT and FTSST. Sixteen subjects also assessed the ability using three assessors to evaluate the inter-tester reliability of the tools.
Results:
The three functional tests demonstrated excellent inter-tester reliability (intraclass correlation coefficient (3,3)=0.997-1.00) and could clearly distinguish between subjects who walked with and without a walking device. In addition, the tests showed significant correlation with walking categories or FIM-L scores (r(pb)=0.778, -0.692 and -0.595 for the 10MWT, TUGT and FTSST, respectively, P<0.001).
Conclusion:
The findings support reliability and validity of the 10MWT, TUGT and FTSST to assess levels of independences in ambulatory subjects with SCI.
