This article reports a thermal analysis of the wrists to analyze the behavior and recovery of skin temperature after 20 min when performing a highly repetitive movement, and two thermography methods (sensory and infrared) and research groups were compared. The tests were carried out with 44 participants who performed a repetitive task for 10 min and integrated into two groups, of which 22 were trained workers from a maquiladora company and were analyzed with sensory thermography, and the other 22 were in the laboratory with infrared thermography with undergraduate students. The study area is the left and right hand, specifically the wrists. The proposed hypothesis is that people with some musculoskeletal problems have a decrease in temperature when starting repetitive tasks and thermal asymmetries, which measurements were recorded at 0, 10, 15, and 20 min after the task was finished. Findings indicate that the temperatures in both wrists behave similarly. The workers reached higher temperatures, and the centigrade degrees of asymmetry difference were also higher. The variable with influence on the temperature was fractured in the arm. After thermally analyzing the temperature behavior between the wrists of both hands, it is concluded that there is an increase in temperature after finishing a repetitive task, and it does not stabilize after 20 min. Both thermography methods observed that the asymmetries are greater than 0.5 °C, detecting the possible pathology of carpal tunnel syndrome.

El trabajo en oficina implica mantener posturas fijas por periodos largos, lo que conlleva al desarrollo de Trastornos Músculo Esqueléticos, es necesario una evaluación ergonómica para evitar problemas de salud. El objetivo es evaluar por medio de métodos ergonómicos el riesgo de carga postural de los trabajadores de área de préstamo de una biblioteca, para disminuir los problemas de salud asociados a trastornos musculo esqueléticos del área administrativa; Se evaluó una mujer y un hombre y se analizaron tres ciclos de trabajo: préstamo, devolución y multa. Las evaluaciones fueron con el método Rapid Office Strain Assessment (ROSA) y (Rapid Entire Body Assesment (REBA) respectivamente, se tomaron medidas tanto antropométricas como del área de trabajo, y se implementaron mejoras. Los resultados obtenidos a través de los métodos permitieron indagar sobre la necesidad de realizar acciones de mejora para atender las posturas inadecuadas y la organización del espacio de trabajo. Una vez implementadas las recomendaciones se obtienen resultados favorables, mejora la postura de los trabajadores, disminuye el nivel de riesgo de REBA de 9 a 3 para el caso de la mujer y de 6 a 2 para el caso del hombre, concluyendo que las recomendaciones fueron favorables para evitar o disminuir los Trastornos Músculo Esqueléticos.

En esta investigación se desarrolla un proceso de estandarización por medio de un modelo matemático el cual tiene la finalidad de optimizar un proceso de producción de yogurt a base de verduras (pepino, betabel y zanahoria) este modelo corresponde a un modelo de regresión múltiple. Durante la primera fase se analizaron las variables que intervienen en el proceso, dichas variables fueron sometidas a un análisis estadístico donde la variable de respuesta Y=Producción (en litros) y su interacción con otras veinticuatro variables que van desde los ingredientes medidos en gramos hasta los tiempos, temperaturas de inoculación y fermentación de la leche. Lo anterior, con el objetivo de crear un modelo que nos ayude a definir las variables que puedan influir en la respuesta y conocer el grado de correlación que existe entre estas. Con esta investigación se logró estandarizar un producto artesanal con el uso de software estadístico y la aplicación de técnicas de estudio del trabajo.

Raspberry pickers are a specific group of agricultural workers whose labor conditions have received limited attention in research. Their working conditions, the health problems they face, and the factors affecting their performance remain scarcely explored. The aim of this pilot study was to analyze the relationship between farmworkers’ self-perceived health status and their work performance, measured by the number of buckets harvested and the income derived from piece-rate work. Data were collected through a daily self-evaluation survey administered to a group of pickers over 53 harvest days. Workers’ perceived health status was recorded at the beginning, during, and at the end of each workday, along with the number of buckets harvested per day. Simple correlation analysis yielded an r coefficient of 0.66, corresponding to a determination coefficient (R2) of 0.44, indicating a moderate relationship between self-perceived health status and work performance. The results showed that poorer self-perceived health status was associated with a 21 % reduction in the number of buckets harvested relative to the group average. This reduction led to income differences of up to 35 % between the most and least productive pickers. These findings highlight the impact of health on both productivity and income among these workers. For future research, studies with larger samples and models incorporating additional factors are recommended to further clarify the relationship between health and productivity in this type of work.

Work-related musculoskeletal disorders (MSDs) are among the leading causes of work-related disability, traditionally attributed to physical and ergonomic factors, though psychosocial and demographic factors also play a crucial role in their progression. This systematic review aimed to evaluate how these three domains are jointly analyzed and modeled in research on work-related MSDs. Scopus, Web of Science, PubMed, and Taylor & Francis were searched for publications from 2000 through 2025, selecting 655 articles for general analysis and 36 for the systematic review; methodological quality was assessed using Joanna Briggs Institute (JBI) checklists, and results were synthesized narratively. The lower back and neck were the body regions most affected across sectors. Job insecurity (risk factor) and job control/autonomy (protective) were the psychosocial factors most consistently associated with MSD outcomes, while workload alone was not significant when tested independently. Repetitive movements and forced postures predominated among ergonomic factors. Age and sex modified these associations consistently, whereas BMI showed a mixed direction, indicating context-dependent susceptibility rather than universal risk. A seven-category taxonomy was developed to classify the statistical relationships tested between domains; only five of the 36 studies formally tested statistical interaction (four across domains), with mixed results, while most reported independent or independent adjusted associations. This gap between the field’s theoretical assumption of synergy across domains and the limited empirical testing of it underscores the need for multidimensional assessment. The evidence is limited by predominantly cross-sectional designs; future research should prioritize longitudinal designs and formal interaction testing.