Relationship between Workload and Fatigue among Mexican Assembly Operators

Título traducido de la contribución: Relación entre la carga de trabajo y la fatiga entre los operadores de ensamblaje mexicanos

CASTILLO JUAN, Juan Luis Hernandez Arellano, J Nieves Serratos-Perez, Jorge Luis García Alcaraz

Resultado de la investigación: Contribución a RevistaArtículo

Resumen

Objetivo: Determinar los niveles de carga de trabajo y fatiga y la relación entre estas dos complejas construcciones entre los operadores de ensamblaje de juntas de velocidad constante (CV) en México.

Métodos: Se realizó un estudio transversal y descriptivo. Para evaluar la carga de trabajo y la fatiga se aplicaron los métodos del Índice de Carga de Tareas de la Agencia Nacional y la Administración del Espacio (NASA-TLX) y del Inventario Sueco de Fatiga Ocupacional (SOFI-S), respectivamente. Se utilizaron pruebas estadísticas no paramétricas para la comparación de datos y el análisis de correlación.

Resultados: Se contrató a un total de 116 trabajadores. Los instrumentos NASA-TLX y SOFI-S obtuvieron altos niveles de consistencia interna y adecuación de la muestra. Demanda Mental, Esfuerzo General y Demanda Física obtuvieron los puntajes más altos de carga de trabajo mientras que Desempeño obtuvo los puntajes más bajos de carga de trabajo. El nivel de carga de trabajo global (OWL) mostró que el 47 % de los trabajadores percibían la carga de trabajo como alta y el 52 % como muy alta. Las dimensiones de fatiga por falta de energía y malestar físico obtuvieron las puntuaciones más altas, mientras que la dimensión de fatiga por falta de motivación obtuvo la puntuación más baja. Se obtuvieron correlaciones positivas significativas entre Demanda Física y Falta de Energía, Demanda Temporal y Molestia Física, y Frustración con los seis ítems de carga de trabajo.

Conclusión: Aunque el ensamblaje de las articulaciones CV se considera una tarea física, no se encontraron diferencias significativas entre las Demandas Mentales y Físicas. Se sugiere un modelo de ecuación de estructura y un análisis de tareas cognitivas para explorar las relaciones causales y los componentes de las Demandas Mentales.
Idioma originalEnglish (US)
Número de artículo 1000315
Número de páginas6
PublicaciónInt J Phys Med Rehabi
Volumen3
N.º6
DOI
EstadoPublished - 2015

Huella dactilar

Workload
Fatigue
Joints
Physical Exertion
Equipment and Supplies
Frustration
Mexico
Motivation
Cross-Sectional Studies

Citar esto

JUAN, CASTILLO., Hernandez Arellano, J. L., Nieves Serratos-Perez, J., & García Alcaraz, J. L. (2015). Relationship between Workload and Fatigue among Mexican Assembly Operators. Int J Phys Med Rehabi, 3(6), [ 1000315]. https://doi.org/10.4172/2329-9096.1000315
JUAN, CASTILLO ; Hernandez Arellano, Juan Luis ; Nieves Serratos-Perez, J ; García Alcaraz, Jorge Luis . / Relationship between Workload and Fatigue among Mexican Assembly Operators. En: Int J Phys Med Rehabi. 2015 ; Vol. 3, N.º 6.
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title = "Relationship between Workload and Fatigue among Mexican Assembly Operators",
abstract = "Objective: To determine the levels of workload and fatigue and the relationship between these two complex constructs among Constant Velocity (CV) joints assembly operators in Mexico. Methods: A cross-sectional and descriptive study was conducted. National Agency and Space Administration-Task Load Index (NASA-TLX) and Swedish Occupational Fatigue Inventory-Spanish (SOFI-S) version methods were applied to assess workload and fatigue, respectively. Non-parametric statistical tests were used to data comparison and correlation analysis. Results: A total of 116 workers were recruited. NASA-TLX and SOFI-S instruments obtained high levels of internal consistency and sample adequacy. Mental Demands, Overal Effort and Physical Demands obtained the highest workload scores while Performance obtained the lowest workload score. The Overall Workload Level (OWL) showed that 47{\%} of the workers perceived the workload as high and 52{\%} as very high. Lack of Energy and Physical Discomfort fatigue dimensions obtained the highest scores, while Lack of Motivation fatigue dimension obtained the lowest score. Positive significant correlations were obtained between Physical Demands and Lack of Energy, Temporal Demands and Physical Discomfort, and Frustration with the six workload items. Conclusion: Although assembly of CV joints is considered as physical task, no significant differences between Mental and Physical Demands were found. A structure equation model and a cognitive task analysis are suggested to explore the causal relationships and the components of Mental Demands.",
author = "CASTILLO JUAN and {Hernandez Arellano}, {Juan Luis} and {Nieves Serratos-Perez}, J and {Garc{\'i}a Alcaraz}, {Jorge Luis}",
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JUAN, CASTILLO, Hernandez Arellano, JL, Nieves Serratos-Perez, J & García Alcaraz, JL 2015, 'Relationship between Workload and Fatigue among Mexican Assembly Operators', Int J Phys Med Rehabi, vol. 3, n.º 6, 1000315. https://doi.org/10.4172/2329-9096.1000315

Relationship between Workload and Fatigue among Mexican Assembly Operators. / JUAN, CASTILLO; Hernandez Arellano, Juan Luis ; Nieves Serratos-Perez, J ; García Alcaraz, Jorge Luis .

En: Int J Phys Med Rehabi, Vol. 3, N.º 6, 1000315, 2015.

Resultado de la investigación: Contribución a RevistaArtículo

TY - JOUR

T1 - Relationship between Workload and Fatigue among Mexican Assembly Operators

AU - JUAN, CASTILLO

AU - Hernandez Arellano, Juan Luis

AU - Nieves Serratos-Perez, J

AU - García Alcaraz, Jorge Luis

PY - 2015

Y1 - 2015

N2 - Objective: To determine the levels of workload and fatigue and the relationship between these two complex constructs among Constant Velocity (CV) joints assembly operators in Mexico. Methods: A cross-sectional and descriptive study was conducted. National Agency and Space Administration-Task Load Index (NASA-TLX) and Swedish Occupational Fatigue Inventory-Spanish (SOFI-S) version methods were applied to assess workload and fatigue, respectively. Non-parametric statistical tests were used to data comparison and correlation analysis. Results: A total of 116 workers were recruited. NASA-TLX and SOFI-S instruments obtained high levels of internal consistency and sample adequacy. Mental Demands, Overal Effort and Physical Demands obtained the highest workload scores while Performance obtained the lowest workload score. The Overall Workload Level (OWL) showed that 47% of the workers perceived the workload as high and 52% as very high. Lack of Energy and Physical Discomfort fatigue dimensions obtained the highest scores, while Lack of Motivation fatigue dimension obtained the lowest score. Positive significant correlations were obtained between Physical Demands and Lack of Energy, Temporal Demands and Physical Discomfort, and Frustration with the six workload items. Conclusion: Although assembly of CV joints is considered as physical task, no significant differences between Mental and Physical Demands were found. A structure equation model and a cognitive task analysis are suggested to explore the causal relationships and the components of Mental Demands.

AB - Objective: To determine the levels of workload and fatigue and the relationship between these two complex constructs among Constant Velocity (CV) joints assembly operators in Mexico. Methods: A cross-sectional and descriptive study was conducted. National Agency and Space Administration-Task Load Index (NASA-TLX) and Swedish Occupational Fatigue Inventory-Spanish (SOFI-S) version methods were applied to assess workload and fatigue, respectively. Non-parametric statistical tests were used to data comparison and correlation analysis. Results: A total of 116 workers were recruited. NASA-TLX and SOFI-S instruments obtained high levels of internal consistency and sample adequacy. Mental Demands, Overal Effort and Physical Demands obtained the highest workload scores while Performance obtained the lowest workload score. The Overall Workload Level (OWL) showed that 47% of the workers perceived the workload as high and 52% as very high. Lack of Energy and Physical Discomfort fatigue dimensions obtained the highest scores, while Lack of Motivation fatigue dimension obtained the lowest score. Positive significant correlations were obtained between Physical Demands and Lack of Energy, Temporal Demands and Physical Discomfort, and Frustration with the six workload items. Conclusion: Although assembly of CV joints is considered as physical task, no significant differences between Mental and Physical Demands were found. A structure equation model and a cognitive task analysis are suggested to explore the causal relationships and the components of Mental Demands.

U2 - 10.4172/2329-9096.1000315

DO - 10.4172/2329-9096.1000315

M3 - Article

VL - 3

IS - 6

M1 - 1000315

ER -

JUAN CASTILLO, Hernandez Arellano JL, Nieves Serratos-Perez J, García Alcaraz JL. Relationship between Workload and Fatigue among Mexican Assembly Operators. Int J Phys Med Rehabi. 2015;3(6). 1000315. https://doi.org/10.4172/2329-9096.1000315