Reliability and validity of the Turkish version of the Lower Extremity Functional Scale in patients with different lower limb musculoskeletal dysfunctions

2019 ◽  
Vol 26 (9) ◽  
pp. 1-14
Author(s):  
Musa Çankaya ◽  
İlkim Çıtak Karakaya ◽  
Mehmet Gürhan Karakaya
Keyword(s):  
Visual Analogue Scale ◽  
Lower Extremity ◽  
Correlation Coefficient ◽  
Factor Structure ◽  
Internal Consistency ◽  
Analogue Scale ◽  
Reliability And Validity ◽  
Functional Scale ◽  
Timed Up And Go ◽  
Lower Extremity Functional Scale

Background/Aims Lower extremity functional scales in Turkish are limited in number and generalisability. The aims of this study were to translate the Lower Extremity Functional Scale into Turkish, and to investigate its reliability and validity in patients with different musculoskeletal conditions in their lower extremities. Methods The Turkish Lower Extremity Functional Scale, Visual Analogue Scale and Timed Up and Go test were administered in 256 outpatients with a re-test after 24–48 hours. Internal consistency, test–retest reliability, construct validity, factor structure and floor-ceiling effects were investigated. Findings The Scale has good reliability and validity. The Spearman correlation coefficient was 0.91 and intraclass correlation coefficient was 0.923. The standard error of measurement value was 4.015 and internal consistency coefficient was 0.92. Item-total correlation values were 0.46–0.74. It had a 3-factor structure, explaining 58.51% of the total variance and the eigenvalues were 1.04–8.26. It had no floor and ceiling effects, and was negatively correlated with the Visual Analogue Scale and Timed Up and Go test (P=0.000). Conclusions The Turkish Lower Extremity Functional Scale is a reliable and valid tool to be used in participants with lower extremity musculoskeletal dysfunctions. Evaluation of its responsiveness and minimal clinically important difference in future studies would have a great value.

scholarly journals Cross-Cultural Adaptation and Validation of the Simplified Chinese Version of the Lower Extremity Functional Scale

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Chuanxin Zhang ◽  
Yaqun Liu ◽  
Shuai Yuan ◽  
Tianbo Yang ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Construct Validity ◽  
Factor Structure ◽  
Internal Consistency ◽  
Content Validity ◽  
Functional Scale ◽  
Retest Reliability ◽  
Simplified Chinese ◽  
Test Retest Reliability ◽  
Lower Extremity Functional Scale

Purpose. The purpose of this study was to cross-culturally adapt and validate the Simplified Chinese version of the Lower Extremity Functional Scale (SC-LEFS). Methods. The original English version of the Lower Extremity Functional Scale was translated and cross-culturally adapted into Simplified Chinese according to international guidelines. The SC-LEFS and 36-Item Short-Form Health Survey were administered to 213 patients with lower extremity musculoskeletal disorders. Psychometric properties including internal consistency, test-retest reliability, content validity, and construct validity were tested. Results. There were no floor or ceiling effects for the SC-LEFS. The scale had high values for internal consistency (Cronbach α=0.97) and test-retest reliability (intraclass correlation coefficient=0.97). Corrected item-total correlations for every item ranged from 0.67 to 0.89. And the item-level content validity index (I-CVI) for each item ranged from 0.78 to 1.00. Principal component analysis revealed a one-factor structure. Nine of ten prior hypotheses were confirmed, which further supports good construct validity within the SC-LEFS. Conclusion. The SC-LEFS has high internal consistency, good test-retest reliability and content validity, convergent construct validity, and a one-factor structure. Thus, it could be regarded as a reliable and valid tool to assess activity limitations in Chinese patients with lower extremity musculoskeletal disorders.

The Lower Extremity Functional Scale Has Good Clinimetric Properties in People With Ankle Fracture

2009 ◽  
Vol 89 (6) ◽  
pp. 580-588 ◽  
Author(s):  
Chung-Wei Christine Lin ◽  
Anne M. Moseley ◽  
Kathryn M. Refshauge ◽  
Anita C. Bundy
Keyword(s):  
Lower Extremity ◽  
Internal Consistency ◽  
Ankle Fracture ◽  
Activity Limitation ◽  
Medium Term ◽  
Short Term ◽  
Functional Scale ◽  
High Internal Consistency ◽  
Lower Extremity Functional Scale

Background: There is limited information on the clinimetric properties of questionnaires of activity limitation in people after ankle fracture.Objective: The purpose of this study was to investigate the clinimetric properties of the Lower Extremity Functional Scale, an activity limitation questionnaire, in people with ankle fracture.Design: This was a measurement study using data collected from 2 previous randomized controlled trials and 1 inception cohort study.Methods: Participants with ankle fracture (N=306) were recruited within 7 days of cast removal. Data were collected at baseline and at short- and medium-term follow-ups. Internal consistency and construct validity were assessed using Rasch analysis. Concurrent validity, responsiveness, and floor and ceiling effects were evaluated.Results: The Lower Extremity Functional Scale demonstrated high internal consistency (α>.90). The variance in activity limitation explained by the items was high (98.3%). Each item had a positive correlation with the overall scale, and most items supported the unidimensionality of the scale. These findings suggest that the scale has high internal consistency and construct validity. The scale also demonstrated high concurrent validity and responsiveness in the short term and no floor or ceiling effects. However, the scale would benefit from more-challenging items, as evident at the medium-term follow-up.Limitations: This was a secondary analysis of existing data sets.Conclusion: The Lower Extremity Functional Scale is a useful tool to monitor activity limitation in people with ankle fracture up to the short-term follow-up. More- difficult items may need to be added to improve the responsiveness of the scale for longer-term follow-up.

scholarly journals Reliability and validity of the Finnish version of the Lower Extremity Functional Scale (LEFS)

2016 ◽  
Vol 39 (12) ◽  
pp. 1228-1234 ◽  
Author(s):  
Jussi P. Repo ◽  
Erkki J. Tukiainen ◽  
Risto P. Roine ◽  
Outi Ilves ◽  
Salme Järvenpää ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Reliability And Validity ◽  
Functional Scale ◽  
Lower Extremity Functional Scale

scholarly journals The Reliability and Meaningfulness of the Anterior Knee Pain and Lower Extremity Functional Scales in Patellofemoralpain Syndrome

2013 ◽  
Vol 6 (1) ◽  
pp. 26-30
Author(s):  
Konstantinos. D. Papadopoulos ◽  
Jeanette M Thom ◽  
Jeremy G Jones ◽  
Jane Noyes ◽  
Dimitris Stasinopoulos
Keyword(s):  
Lower Extremity ◽  
Knee Pain ◽  
Internal Consistency ◽  
Anterior Knee Pain ◽  
Pain Scale ◽  
Functional Scale ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
Anterior Knee ◽  
Lower Extremity Functional Scale

Two very common scales used in the assessment of patellofemoral pain syndrome are the anterior knee pain scale and the lower extremity functional scale. There is only limited evidence regarding how specifically reliable and meaningful these scales are when assessing the syndrome.The purpose of this study was to assess which questions in both scales are suitable for patellofemoral pain syndrome patients.20 patients with patellofemoralpain were recruited from the physiotherapy waiting list of the local hospital and asked to complete the anterior kneepain scale and the lower extremity functional scale on two occasions at least one week apart. A general test-retest reliability of the scales was measured in addition withtest-retest and internal consistency of each single question. Finally,the questions markedas ‘no problem’ in both sessions were also measured. The total scores of the two scales were found to be highly reliable. However, the anterior knee pain scale revealed five questions with moderate test retest reliability, two questions with less internal consistency whilst it included three less meaningful questions. The lower extremity functional scale showed four questions with moderate test retest reliability,one question with less internal consistency andsix meaningless questions. This study agrees with previous research stating that there are questions in both scales that can be considered meaninglessand less reliable and should probably be excluded or replaced with other questions. The study provides useful information for the development of a more appropriate patellofemoralpain syndrome scale or a modified anterior knee pain scale and lower extremity functional scale for patellofemoralpain syndrome use only.

Development and Validation of an Instrument to Assess Horseback Mobility in Hippotherapy

2021 ◽  
pp. 003151252110365
Author(s):  
Alessandra V. Prieto ◽  
Kênnea Martins Almeida Ayupe ◽  
Ana C. A. Abreu ◽  
Paulo J. B. Gutierres Filho
Keyword(s):  
Correlation Coefficient ◽  
Factor Structure ◽  
Internal Consistency ◽  
Rater Reliability ◽  
Intra Class Correlation ◽  
Exploratory Factor Analyses ◽  
Excellent Internal Consistency ◽  
Development And Validation ◽  
Functional Gain ◽  
Intra Class Correlation Coefficient

Improvement in rider mobility represents an important functional gain for people with disabilities undergoing hippotherapy. However, there is no validated measuring instrument to track and document the rider's progress in riding activities. In this study, we aimed to develop and establish validity evidence for an instrument to assess hippotherapy participants’ mobility on horseback. We report on this development through the stages of: (a) content validation, (b) construct validation, (c) inter- and intra-rater reliability and (d) internal consistency analysis. We evaluated its factor structure with exploratory factor analyses, calculated values for inter- and intra-rater reliability using the intra-class correlation coefficient, and calculated its internal consistency using Cronbach's alpha. We followed recommendations by the Guidelines for Reporting Reliability and Agreement Studies. We found good inter-rater reliability (intra-class correlation coefficient – ICC = 0.991–0.999) and good intra-rater reliability (ICC = 0.997–1.0), and there was excellent internal consistency (Cronbach's α = 0.937–0.999). The instrument’s factor structure grouped its three domains into one factor. As this instrument is theoretically consistent and has been found to be appropriate and reliable for its intended use, it is now available for the measurement of horseback mobility among hippotherapy riders.

Exploring the Perth Hamstring Assessment Tool and Lower Extremity Functional Scale in a Proximal Hamstring Avulsion Cohort: A Cross-sectional Study

2021 ◽  
pp. 036354652110085
Author(s):  
Elsa Pihl ◽  
Kenneth B. Jonsson ◽  
Mida Berglöf ◽  
Nina Brodin ◽  
Olof Sköldenberg ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Assessment Tool ◽  
Patient Specific ◽  
Activity Limitations ◽  
Functional Tests ◽  
Functional Scale ◽  
Proximal Hamstring Avulsion ◽  
Proximal Hamstring ◽  
Lower Extremity Functional Scale

Background: The goal of treatment for a proximal hamstring avulsion (PHA) is an objectively restored muscle and a subjectively satisfied, pain-free patient at follow-up. Different self-reported and performance-based outcome measures have been used to evaluate recovery, but their validity is poorly investigated. Purpose: To investigate 1) the correlation between the commonly used self-reported outcome measurements, the Perth Hamstring Assessment Tool (PHAT) and the Lower Extremity Functional Scale (LEFS); 2) to what extent these scores can be explained by physical dysfunction as measured by performance-based tests; 3) whether performance-based tests can discriminate between the injured and uninjured extremity; and 4) which activity limitations are perceived by patients several years after the injury. Study design: Cohort study (Diagnosis); Level of evidence, 3. Methods: We included a consecutive series of patients treated for or diagnosed with PHA in our department between 2007 and 2016 having at least 2 tendons avulsed from the ischial tuberosity. Participants attended 2 study visits, answered questionnaires (PHAT, LEFS, and Patient-Specific Functional Scale [PSFS]), and performed physical performance–based tests (single-leg hop tests, single–step down test, and isometric and isokinetic strength tests). Results: A total of 50 patients were included (26 men [52%], 24 women [48%]; mean age, 50.9 years [SD, 9.8 years]). The mean follow-up time was 5.5 years (SD, 2.7 years), and 74% had been surgically treated. The correlation between PHAT and LEFS was strong ( r = 0.832) and statistically significant ( P < .001). Seven of the performance-based tests exhibited a statistically significant but weak correlation with LEFS (0.340-0.488) and 3 of the tests to PHAT (–0.304 to 0.406). However, only peak torque could significantly discriminate between the extremities. The activity limitation most commonly mentioned in PSFS was running (16 patients [32%]). Conclusion: Although PHAT and LEFS correlated strongly, the correlations between functional tests and the patient-reported outcome scores were weak, and most functional tests failed to discriminate between the injured and uninjured lower extremity in patients with PHA 5 years after injury. In general, patients alleged few activity limitations, but running difficulty was a common sequela after PHA.

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