Background: Impairment and functional limitations from musculoskeletal conditions are evaluated using outcome measure tools. The Lower Extremity Functional Scale (LEFS) is one of the outcome measure tools (OMT) that assess the functional capacity of patients who have lower extremity conditions. It was originally developed in English and translated later into other languages; however, no Filipino version is available. Objective: This study aims to translate, cross-culturally adapt the LEFS into Filipino, and evaluate its psychometric properties. Methods: Using a psychometric study design, the LEFS will be translated and cross-culturally adapted into Filipino following the guidelines set by Beaton et al. and Sousa and Rojjanasrirat. These include six stages: (1) forward translation into Filipino, (2) synthesis, (3) backward translation, (4) expert committee review, (5) pilot testing/cognitive interview, and (6) psychometric testing. Filipinos with lower extremity conditions will be recruited for the pilot (n= 10) and psychometric testing (n= 200). Validity will be evaluated using face validity index, content validity index, independent t-test (knowngroup validity), and Spearman rho (concurrent validity). Reliability will be assessed using Cronbach alpha for the internal consistency and intraclass correlation coefficient for the stability. Floor and ceiling effects will also be computed. E Expected results The LEFS will be successfully translated and cross-culturally adapted into Filipino. It will be a valid and reliable outcome measure tool that physical therapists and other healthcare professionals can use for the functional assessment of patients. This study can also serve as a reference for future translation studies
Lower Extremity

BACKGROUND: Inversion ankle sprains are among the most common traumatic injuries for both men and women caused by jumping and landing activities. The ankle is protected by the static and dynamic stabilizers to reduce the incidences of injuries. Furthermore, using a non-elastic closedbasket weave taping technique is one of the common interventions to prevent it. Knowledge about the muscle activity reaction of the dynamic stabilizers upon application of tape is limited with varying results. OBJECTIVES: To determine the effect of non-elastic closed-basket weave ankle taping on the muscle activity of tibialis anterior, peroneus longus, medial, and lateral gastrocnemius on healthy individuals during jump landing on a hard, flat surface. METHODS: This study is a quasi-experimental study using a pre- and post-test design. Peak amplitude muscle activity was assessed and analyzed using surface electromyography (sEMG) after landing from a jump. The pre-test was done by jump landing without tape, after which post-test data was immediately collected after applying the non-elastic closed-basket weave taping. Jump landing was done for three trials for both pre- and post-tests. A paired t-test was used to determine significant differences in pre-post taping. RESULTS: Fifteen healthy participants were included in the study (9 females, 6 males) with a mean age of 21 + 1.03 years old and BMI of 22.74 + 1.63 kg/m2. No significant difference was observed on peak amplitude muscle activity of the tibialis anterior (p= 0.06), medial gastrocnemius (p= 0.32), and lateral gastrocnemius (p= 0.66) after application of tape. However, a significant difference was observed in the peroneus longus after the application of tape (p= 0.05) during jump landing CONCLUSION Non-elastic closed-basket weave taping decreased the peak amplitude muscle activity of the peroneus longus during jump landing. This research suggests that tape may influence the peroneus longus, and it may or may not be detrimental in reducing the risk of ankle sprains.
Electromyography