Parallel Reliability of Lumbar-Flexion Measurements

in Journal of Sport Rehabilitation
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Context:

Research and clinical recordings of lumbar flexion demand practicable and precise methodology for quantifying variations.

Objective:

To describe and evaluate the parallel reliability of 2 methods of measuring lumbar fexion—perpendicular stick markers (SM) and the distanciometer (DM)—using an electrogoniometer (EGM) as reference.

Design:

Parallel measurement for reliability.

Setting:

Laboratory.

Participants:

25 healthy men.

Intervention:

Simultaneous measure of lumbar flexion at preestablished positions (0°, 15°, 30°, and 45°).

Outcome Measures:

Data from SM and DM, recorded simultaneously.

Results:

High parallel reliability was found when comparing the EGM data with the SM (r = .997; measurement error: 0.6° ± 0.7°; no differences: t-test P = .260) and with the DM (r = .962; measurement error: 2.8° ± 1.9°; no differences: t-test P = .973).

Conclusions:

Considering the reliability, practicability, and low cost of the described methods, they can be regarded as applicable and useful.

Vieira is with the Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta T6G 2G4 Canada. Coury is with the Dept of Physiotherapy, Federal University of São Carlos, São Carlos, São Paulo 13565-905 Brazil.

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