Self-reported use of the paretic lower extremity of people with stroke: A reliability and validity study of the Lower-Extremity Motor Activity Log (LE-MAL) - Brazil.

Background: Most measures to assess the lower extremity (LE) after a neurological injury assess the lower limb motor capacity in the laboratory or clinical settings as the lower-extremity motor subscale of Fugl Meyer Assessment (FMA-LE). The LE Motor Activity Log (LE-MAL) measures the use of paretic LE in real-life conditions, which for many researchers and stakeholders is considered an important goal of rehabilitation.

Objective: Investigate the reliability, validity, floor, and ceiling effects of the Brazilian version of the LE-MAL.

Methods: Cross-sectional study to examine the reliability and validity of LE-MAL in patients with chronic stroke. The translation and adaptation of LE-MAL was carried out for the Brazilian version. After this stage, to ensure the inter-rater reliability two raters (LCF, DBM) applied the translated version of LE-MAL in the 21 selected participants. Subsequently, the concurrent validity was calculated by the correlation with the FMA-LE.

Results: The translation and retro-translation of the LE-MAL was approved to the Brazilian context. A floor effect was not observed, and there was no ceiling effect for the LE-MAL total scores. The Inter-rater reliability ranged between 0.80 and 0.86. The Bland-Altman analysis showed difference of LE-MAL scores ranged from 0.8 to 1.6. The Cronbach's alpha coefficients for LE-MAL and subscales were high ranging between 0.86 and 0.80. There was a significant moderate correlation between the LE-MAL and FMA-LE (Pearson correlation 0.55 (p = .009)).

Conclusion: The Brazilian version LE-MAL is valid and reliable to assess real-world use of the paretic LE of individuals with chronic stroke.