Objetivo: Estimar la relación entre la percepción del clima ergonómico de la empresa y la presencia de molestias musculoesqueléticas en trabajadores de tres ciudades colombianas. Metodología: Estudio de corte en 1339 trabajadores de empresas de diversos sectores económicos, ubicadas en Barranquilla, Bogotá y Cúcuta. El estudio se realizó desde septiembre hasta diciembre de 2021. Se aplicaron el Cuestionario Evaluación del Clima Ergonómico y el Cuestionario Nórdico Musculoesquelético para la evaluación de molestias musculoesqueléticas. Resultados: La mayoría de las molestias fueron en el cuello (48,88 %). El 48,69 % de los trabajadores encuestados considera que su formación y conocimiento sobre bienestar y salud en el ámbito laboral es baja. La percepción de molestias musculoesqueléticas en el cuello fue mayor en los trabajadores con baja percepción del compromiso de la Gerencia con los indicadores empresariales [OR 1,77 (IC 95 %: 1,24-2,51)] y con el bienestar y la salud [OR 2,56 (IC 95 %: 1,75-3,75)]. La baja formación y conocimiento de los empleados sobre los indicadores empresariales se relacionó con mayores molestias en hombros [OR 1,8 (IC 95 %: 1,26-2,58)] y codos [OR 2,3 (IC 95 %: 1,38-3,62)], y sobre el bienestar y la salud, con molestias en zona alta de la espalda [OR 3,7 (IC 95 %: 2,60-5,25)], cadera, nalgas, muslos [OR 3,19 (IC 95 %: 2,19-4,66)] y rodillas [OR 4,42 (IC 95 %: 3,02-6,46)]. Conclusión: La presencia de molestias musculoesqueléticas está relacionada con la falta de compromiso de la empresa con la gestión de un ambiente saludable, la participación de los trabajadores en las actividades de seguridad y salud en el trabajo, el análisis de riesgos laborales y los procesos de formación de los trabajadores.

Background: Burn injuries represent a major public health concern, particularly in low- and middle-income countries. In Colombia, regional epidemiological data remain limited, restricting the development of evidence-based prevention and treatment strategies. Methods: This descriptive, observational, retrospective study included 526 patients with burn injuries treated at a level IV referral institution in Barranquilla, Colombia, between November 2018 and November 2023. Sociodemographic, clinical, and outcome variables were analyzed using IBM SPSS Statistics version 25.0. Associations with in-hospital mortality were assessed using the Fisher exact test and univariable logistic regression. Statistical significance was defined as P <0.05. Results: The mean patient age was 24.6±21.0 years, and males accounted for 61.8% of the cohort. Scald injuries were the most common mechanism (54.8%), with children younger than 5 years comprising 25.5% of all patients. Major burns were identified in 30.2% of patients. The mean total body surface area burned (TBSA) was 11.7±13.0% (median: 7.0%). Surgical debridement and/or escharotomy were performed in 59.7% of cases, and reconstructive coverage was required in 34.2%. The overall in-hospital mortality rate was 8.4% (n=44). On univariable analysis, the factors most strongly associated with mortality were major burns [odds ratio ( OR ), 13.13; 95% CI: 5.94-29.03; P <0.001], ICU admission ( OR =12.74; 95% CI: 4.49-36.16; P <0.001), and bronchoscopically confirmed airway injury ( OR =35.48; 95% CI: 9.02-139.56; P <0.001). Endotracheal intubation was strongly associated with death (35 of 43 intubated patients died), but the association could not be reliably quantified because of near-complete separation. The most frequently documented complications were sepsis (8.2%), pneumonia (3.6%), and documented bacteremia (2.5%); the case-fatality rate among patients with sepsis was 41.9%. Pseudomonas aeruginosa was the microorganism most commonly isolated from tissue cultures. Conclusions: Major burns, airway injury, and ICU admission were the factors most strongly associated with in-hospital mortality in this cohort. The substantial surgical burden underscores the need to strengthen specialized burn-care capacity in the Colombian Caribbean region. Targeted prevention strategies for pediatric and working-age populations, along with national epidemiological surveillance systems, are urgently needed.

Introducción. La magnitud de la lipemia postprandial es un indicador de riesgo cardiovascular, en especial en mujeres con actividad hormonal reducida. Los ejercicios resistidos (ER) podrían ser un factor que influencie las concentraciones de lípidos después de consumir alimentos.Objetivo. Determinar los efectos agudos sobre la lipemia postprandial de mujeres postmenopáusicas que tiene la realización de sesiones de ER de alto y bajo volumen, en comparación a un grupo control.Materiales y métodos. Después de una evaluación inicial (antropometría, perfil lipídico y fitness muscular), 32 mujeres fueron divididas aleatoriamente en tres grupos: uno con ER de alto volumen (n=11), otro con ER de bajo volumen (n=11) y un grupo control sin ER (n=10). 12 horas después de los ejercicios se suministró un compuesto nutricional hiperlipídico y se analizó la lipemia postprandial cada hora durante 5 horas.Resultados. Los diferentes volúmenes de ER no redujeron de manera importante los marcadores lipémicos (colesterol total, triglicéridos, LDL y VLDL) (p>0.05) ni aumentaron las concentraciones plasmáticas de HDL (p>0.05).Conclusiones. Las sesiones de ER no afectaron los marcadores lipémicos postprandiales, aunque sí mostraron resultados clínicos relevantes en los grupos experimentales (reducción de LDL-VLDL y aumento de HDL en momentos específicos).

Introduction: eccentric hamstring strength measured during the Nordic hamstring exercise is used to profile and monitor soccer players, but its individual interpretation requires reference values obtained in the same population and with the same device and protocol. Objective: to describe the distribution of absolute and body mass-normalized peak eccentric hamstring strength during the Nordic hamstring exercise in Colombian under-20 soccer players and to pro-pose a descriptive percentile-based classification. Methodology: in this cross-sectional study, 142 male players aged 17 to 20 years from five clubs in the department of Atlántico, Colombia, were assessed at the end of the 2025 preseason. Peak force of each limb was recorded over three repetitions with a load cell device of known reliability (ICC (3,1) = 0.85) and ex-pressed in newtons (N) and N/kg. Percentiles 5 to 95 were calculated, and five categories were defined using the 10th, 25th, 75th and 90th percentiles as cut-off points. Results: the dominant limb, defined as the limb with the higher peak force, produced 387.34 ± 109.60 N (5.45 ± 1.36 N/kg) and the non-dominant limb 339.52 ± 92.69 N (4.78 ± 1.16 N/kg). The median bilateral average was 360.14 N (IQR: 287.73–424.40) and 5.04 N/kg (IQR: 4.31–5.92). Body mass correlated with absolute strength (r = 0.43; p < 0.001) but not with relative strength. Conclusion: these values are a descriptive reference for under-20 players assessed with the same device and protocol; the categories are not clinically validated and should not be used to predict inju-ries.

Nucleotidases participate in the regulation of physiological and pathological events, such as inflammation and coagulation. Different types of physical exercise promote changes in purinergic signaling. In the present study, we investigated the activities of soluble nucleotidases in the blood serum of sedentary young male adults before and after a resistance exercise session. In addition, we evaluated how this type of exercise could influence the concentrations of adenine nucleotides in the blood serum. The individuals were submitted to a strength exercise session, consisting of 8 exercises. Blood samples were collected pre- and post-exercise, and serum was separated for analysis. Results showed increases in ATP, ADP, and AMP hydrolysis post-exercise, compared to pre-exercise values. Our results demonstrate that a resistance exercise session modifies ATP metabolism, being one more form of exercise that can positively influence cardiovascular and metabolic health.

Background and Objectives: Running-related musculoskeletal injuries remain highly prevalent among recreational runners, and the absence of population-specific biomechanical reference values limits clinical and sports interpretation in Latin American populations. This study aimed to establish reference values for spatiotemporal and selected running kinematic/mechanical values (initial contact angle, vertical leg stiffness, and vertical oscillation) in healthy adult recreational runners from Barranquilla (Colombia) using three-dimensional motion capture. Methods: A cross-sectional observational study was conducted in 25 healthy adults (13 men, 12 women; mean age 32.7 ± 7.4 years, range 20–47 years). Running biomechanics were assessed using a BTS SMART-DX three-dimensional motion capture system and a Modified Helen Hayes marker model with 30 reflective markers. Participants completed treadmill running trials at 7, 9, 11, and 13 km/h. Key spatiotemporal parameters and global kinematic/mechanical metrics were processed using BTS Smart Clinic software. Reference values were defined using the 10th and 90th percentiles, stratified by sex and running speed, and accompanied by bootstrap 95% confidence intervals. Effects of sex and speed were tested by two-way ANOVA with partial eta squared and Holm-adjusted p values, with a linear mixed-effects model as a robustness check. Results: Motorized treadmill-specific biomechanical reference values (10th and 90th percentiles) were established and stratified strictly by running speed (7, 9, 11, and 13 km/h) and sex. Under the primary linear mixed-effects model, running speed significantly affected all ten evaluated biomechanical variables (all adjusted p < 0.001), including initial contact angle and vertical oscillation, confirming that speed-disaggregated estimates are mandatory for clinical interpretation. Conversely, sex effects were robust to multiplicity adjustment only for flight time and vertical leg stiffness. Compared with a European reference cohort, and after adjustment for sex, age, stature, body mass and speed through the published reference equations, this cohort showed a 6.6% shorter flight time, a 19.0% lower vertical oscillation, a 3.8% shorter stride length, and a 3.1% higher cadence. Conclusions: This study provides the preliminary regional reference database for running spatiotemporal and selected kinematic parameters in a cohort of healthy adult recreational runners from Barranquilla (Colombia). These preliminary values provide a baseline restricted to motorized treadmill running at fixed speeds; while they support standardized treadmill screening and rehabilitation tracking, their direct applicability to overground or self-paced running remains limited and warrants caution.