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OBJECTIVE: The Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire is widely used to assess patients with symptoms of subacromial pain syndrome (SPS). No study has analyzed the DASH by using the Rasch model in these patients and related the level of difficulty of the items with the International Classification of Functioning Disability and Health (ICF) domains. The purpose of this study was to evaluate the measurement properties of the DASH in individuals with SPS and to describe which ICF components are influenced by SPS based on the DASH. METHODS: The full version of the DASH was used to assess upper limb pain and function in individuals with SPS. Responses were assessed using the Rasch model. DASH items were grouped according to the level of difficulty and associated with the ICF domains to identify the most compromised aspect in these individuals. RESULTS: Reliability and internal consistency for the DASH were shown to be 0.93 and 0.95, respectively. Item 3 ("Turn a key") was the easiest and 25 ("Pain during specific activity") the most difficult. Only item 30 ("Less capable/confident/useful") was as an erratic item. Item 15 ("Put on a sweater") showed differential functioning by age and item 11 ("Carry a heavy object") by sex. Seven items showed differential functioning related to the angular onset of pain during arm elevation. Sixty percent of the most difficult items belonged to the "Body function" domain of the ICF. CONCLUSION: Although some psychometric properties of the DASH are adequate according to the Rasch model, adjustments to some items are necessary for individuals with SPS. Clinicians should be cautious when interpreting the DASH, especially in patients with angular onset of pain above 120 degrees of arm elevation. IMPACT: The information contained in this study should be used by clinicians to interpret the results of the DASH when assessing individuals with SPS. The DASH may not be adequate to assess those with shoulder pain above 120 degrees of arm elevation. These results are not generalizable to other shoulder pathologies.

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Biopsychosocial aspects seem to influence the clinical condition of rotator cuff related shoulder pain (RCRSP). However, traditional bivariate and linear analyses may not be sufficiently robust to capture the complex relationships among these aspects. This study determined which biopsychosocial aspects would better classify individuals with acute and chronic RCRSP and described how these aspects interact to create biopsychosocial phenotypes in individuals with acute and chronic RCRSP. Individuals with acute (

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O futebol é um esporte que exige habilidades individuais e capacidades físicas. Estas características podem ser especificas às posições no campo, a fim de otimizar o desempenho e rendimento atlético. No entanto, ainda há necessidade de estudos para verificar se há diferença na força e potência muscular, agilidade e flexibilidade entre as posições em campo de crianças e adolescentes praticantes de futebol. O objetivo desse estudo é comparar o desempenho de força e potência muscular, agilidade e flexibilidade entre as posições de praticantes de futebol com idades entre 10 e 15 anos e do gênero masculino. Participaram 39 indivíduos recrutados de uma escola de futebol, com idade média de 13,1 ± 1,94 anos, tempo de prática de futebol de 5,9 ± 2,6 anos, do gênero masculino, classificados de acordo com a posição no campo. Foram realizados os testes: Single Hop Test, Shuttle Run, Teste Sentar e Alcançar e a avaliação de força dos membros inferiores por meio do dinamômetro isométrico. Os resultados foram comparados entre as posições em campo dos atletas, e não houve diferenças significativas em nenhuma das variáveis analisadas (p > 0,05). Os praticantes de futebol com idades entre 10 e 15 anos não apresentaram diferença de força e potência muscular, agilidade, flexibilidade entre as posições em campo...(AU)

Soccer is a sport that requires individuals abilities and physical fitness. These characteristics may vary according to the field position, in order to improve athletic performance and efficiency. However, there is a lack of studies that verified differences on strength, muscle power, agility and flexibility among field positions in children and adolescents soccer players. The aim of the present study is to compare muscle strength, muscle power, agility and flexibility performance among field positions of male soccer players aged between 10 and 15 years old. Thirty-nine male individuals recruited from a soccer school , with mean age of 13.1 ± 1.94 years, practice time of 5.9 ± 2.6 years, were assigned according to field positions. Single Hop Test, Shuttle Run, Sit and Reach and isometric dynamometer for lower limb strength assessment were performed. The results of the all tests comparisons showed no significant difference among field positions (p > 0.05). Soccer players aged between 10 and 15 years old showed no difference on strength, muscle power, agility and flexibility performance among soccer field positions...(AU)

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