Photobiomodulation does not provide incremental benefits to patients with knee osteoarthritis who receive a strengthening exercises program: a randomized controlled trial.

BACKGROUND: There is lack of agreement in the literature about the effectiveness of photobiomodulation (PBM) for reducing pain-related symptoms in patients with knee osteoarthritis (OA). OBJECTIVE: To evaluate whether PBM, when combined to exercises, provides incremental therapeutic benefits for pain, physical function, and quality of life (QoL) in patients with knee OA. METHODS: A six-month double-blind placebo-controlled randomized trial was conducted. Patients with knee OA were randomly assigned to one of three treatment groups: Exercise, Exercise plus Active PBM, or Exercise plus Placebo PBM. Treatment was provided over an eight-week period, three times per week. The primary outcomes were pain at rest and upon movement, assessed by a visual analogue scale (VAS). WOMAC global score, QoL, and a core-set of performance-based tests were measured as secondary outcomes. All outcomes were collected at baseline, immediately after treatment, and after three- and six-month post-treatment. RESULTS: 127 participants were allocated as follows: Exercise, N = 41; Exercise plus Active PBM, N = 44; and Exercise plus Placebo PBM, N = 42. There was no between-groups difference in improvement in pain, physical function, and QoL for all follow-up times. However, all groups presented significant, clinically relevant improvements in pain, physical function, and QoL immediately and three months after treatment compared with baseline measures. CONCLUSION: Patients with knee OA who received a strengthening exercises program did not experience incremental benefits regarding pain, physical function, or QoL when adding PBM to their therapeutic exercises.

Low back pain and disability in military police: an epidemiological study / Dor lombar e incapacidade em policiais militares: um estudo epidemiológico / Dolor lumbar e incapacidad en policías militares: un estudio epidemiológico

Abstract Introduction: The low back pain is a major public health problem in industrialized societies, commonly affecting the adult population. The occupation is considered as a risk factor, especially those functions that require physical effort, we have as example the job of the military police, who are exposed to several risk factors, both those who perform administrative activities, and those who perform the ostensive policing. Objective: The aim of this study was to evaluate the prevalence of low back pain among military police, as well the presence of disability and associated factors. Methods: This is an analytical cross-sectional study. Was evaluated the level of disability, pain before and after the work shift, flexibility, postural alterations and anthropometric measures. It was used the regression analysis, considering 95% CI and p < 0.05. Were interviewed 97 military police with mean age of 39.30 (± 5.33), all males. Results: The complaint of low back pain was significantly larger after the work shift, and 82.5% reported difficulties in daily life activities due to low back pain. Conclusion: There is a high prevalence of low back pain and impairment in daily life activities because of military police. The data presented reinforce the need to consider low back pain as a public health problem that affects the whole population, especially the military police.

Resumo Introdução: A dor na região lombar é um importante problema de saúde pública nas sociedades industrializadas, acometendo comumente a população adulta. A ocupação é considerada como um fator de risco, principalmente aquelas funções que requerem esforço físico, temos como exemplo a ocupação do policial militar, que se encontram expostos a vários fatores de risco, tanto os que realizam atividades administrativas, quanto àqueles que realizam o policiamento ostensivo. Objetivo: Avaliar a prevalência de dor lombar entre policiais militares, bem como a presença de incapacidade e seus fatores associados. Métodos: Trata-se de um estudo transversal de caráter analítico. Foi avaliado o nível de incapacidade, dor antes e depois do turno de trabalho, flexibilidade, alterações posturais e medidas antropométricas. Utilizou-se a análise de regressão linear múltipla, considerando o IC 95% e p < 0,05. Foram entrevistados 97 policiais militares com média de idade de 39,30 (± 5,33), sendo todos do sexo masculino. Resultados: A queixa de dor lombar foi significativamente maior após o turno de trabalho e, 82,5% dos indivíduos relataram prejuízo na realização das atividades da vida diária decorrente de lombalgia. Conclusão: Há uma alta prevalência de dor lombar e prejuízo nas atividades da vida diária em sua decorrência entre os policiais militares. Os dados apresentados reforçam a necessidade de considerar a lombalgia como problema de saúde pública que afeta toda a população, em especial os policiais militares.

Resumen Introducción: El dolor en la región lumbar es un importante problema de salud pública en las sociedades industrializadas, afectando comúnmente a la población adulta. La ocupación es considerada como un factor de riesgo, principalmente aquellas funciones que requieren esfuerzo físico, tenemos como ejemplo la ocupación del policía militar, que se encuentran expuestos a varios factores de riesgo, tanto los que realizan actividades administrativas, como los que realizan el trabajo policial ostensible. Objetivo: El objetivo de este estudio fue evaluar la prevalencia de dolor lumbar entre policías militares, así como la presencia de incapacidad y sus factores asociados. Métodos: Se trata de un estudio transversal de carácter analítico. Se evaluó el nivel de incapacidad, dolor antes y después del turno de trabajo, flexibilidad, alteraciones posturales y medidas antropométricas. Se utilizó el análisis de regresión lineal múltiple considerando el IC 95% y p < 0,05. Se entrevistaron a 97 policías militares con una media de edad de 39,30 (± 5,33), siendo todos del sexo masculino. Resultados: La queja de dolor lumbar fue significativamente mayor después del turno de trabajo y el 82,5% de los individuos reportaron perjuicio en la realización de las actividades de la vida diaria derivada de la lumbalgia. Conclusión: Se concluye que hay una alta prevalencia de dolor lumbar y perjuicio en las actividades de la vida diaria en su consecuencia entre los policías militares. Los datos presentados refuerzan la necesidad de considerar la lumbalgia como problema de salud pública que afecta a toda la población, en especial a los policías militares.

Intra-rater and Inter-instrument Reliability on Range of Movement of Active Knee Extension

Abstract: The objective of the present study was to evaluate the reliability of intra-rater and inter-instrument measures during two flexibility programs. Fifty-three active and healthy males, aged between 18 and 28 years old, were randomly included in three groups: control (Cg, n = 18), static stretching (SSg, n = 17), and dynamic stretching (DSg, n = 18). All participants underwent measurements of their active range of knee extension using manual goniometry and computerized photogrammetry, measured in four separated assessments and analyzed using the SPSS, with ((5%. Both methodologies presented very strongintra-raterreliability (ICC: 0.91(0.99; P<0.001) at all four assessments in all the groups, and the instruments showed weak (r: 0.31-0.6) to strong(r: 0.61-0.9) correlation, in the Cg (P<0.05) and strong (r: 0.61-0.9) in the SSg and DSg (P<0.01), although without differences between groups, indicating that the measures are equally reliable, regardless of interventions.(AU)