Assessment of Workload, Fatigue, and Musculoskeletal Discomfort Among Computerized Numerical Control Lathe Operators in Mexico

Arellano, Juan Luis Hernández; Pérez, J Nieves Serratos; Alcaráz, Jorge Luis García; Maldonado-Macías, Aidé Aracely

doi:10.1080/24725838.2017.1317301

Cited by 11 publications

(5 citation statements)

References 58 publications

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“…In contrast, Engberg et al [93] detected statistically significant differences in Sweden's general population. Women in the current study had slightly higher mean FG scores than men, supporting previous studies that found fatigue was more common in women [74,82,[94][95][96][97][98]; fatigue also has been closely related to the female gender [99]. Men in the current study showed higher mean FF values, in line with the findings of Guo et al [100] in automobile factory employees.…”

Section: Discussionsupporting

confidence: 90%

Effects of Fatigue and Grit on Club Sports Coaches

Martínez-Moreno

Cavas-García

López-Gullón

et al. 2021

IJERPH

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The objective of this research is to identify the level of general fatigue (FG), physical fatigue (FF) and concentration/motivation (C/M) in sports coaches. Two components of grit, consistency of interest (CI) and perseverance in effort (PE), are also assessed. The possible effects of sex, age, marital status, employment contract, work dedication and grit on FG, FF and C/M in sports coaches are examined. This cross-sectional study analyses 335 sports club coaches (21.2% women, 78.8% male) with a mean age of 29.88 (SD = 9.97) years, at a significance level of p < 0.05 for all analyses. Different aspects of fatigue were determined using the Spanish translation of the Multidimensional Fatigue Inventory-20 (IMF-20). The Grit-S scale was used to measure the ability to persevere, have passion and commit. The results indicated that men scored higher in FF, C/M and PE, while women obtained higher values in FG and CI. Non-contract coaches had higher FG, CI and PE, while coaches with contracts scored higher on C/M and FF. In conclusion, coaches with higher CI had higher FG, and high levels of PE were associated with low FG levels.

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Section: Discussionsupporting

confidence: 90%

Effects of Fatigue and Grit on Club Sports Coaches

Martínez-Moreno

Cavas-García

López-Gullón

et al. 2021

IJERPH

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“…This finding somewhat confirms that practicing on CNC machines is mentally demanding, consistent with some previous studies that have identified this as a challenging task for students. 46,47 This implies that students may need additional support or interventions to manage their MWL and improve their learning outcomes in CNC courses.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the learning performances for CNC machine practice in mechanical engineering degree courses based on students’ mental workload

Hoang

Tran

Pham

et al. 2023

International Journal of Mechanical Engineering Education

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This study evaluates the performance of learning CNC machining in mechanical engineering degree programs by assessing students’ mental workload (MWL). Both subjective (NASA-Task Load Index) and objective (increasing ratio of heart rate, IRH) evaluation methods were employed to assess the MWL of 46 students randomly assigned to two groups: a traditional training group and a combined simulation training group. The results demonstrate the significant impact of the training method on students’ MWL. Specifically, the MWL and IHR values of the combined simulation training group were 54.3 and 9.2, respectively, while those of the traditional training group were 58.3 and 13.2. Additionally, the correlation analysis showed a significant correlation between the IHR value and the MWL score of NASA-TLX. These findings suggest that implementing simulated software and the combined simulation training method effectively reduces students’ MWL, thereby promoting active knowledge acquisition. Consequently, students’ MWL can be utilized to evaluate the effectiveness of technical education with the aim of enhancing training efficiency and quality.

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“…W ith the implementation of new, better, and more sophisticated technologies, the effort performed by workers has had significant changes (1)(2)(3)(4), and now the workers perform to complex tasks demanding combined physical and mental efforts (2). A few years ago, workers performed only physical tasks; in contrast, today it is possible to find jobs where physical effort is practically zero, for example, office work, control room operation, among others.…”

Section: Introductionmentioning

confidence: 99%

“…The work/job/activities/tasks developed by the advanced manufacturing technology (amt) operators are considered complex (4). One example of complex work is the operation of lathes of computer numerical control (cnc).…”

Section: Introductionmentioning

confidence: 99%

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Physiological and Subjective Responses Associated to Physical and Mental Load in a Simulated Task

2018

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Introducción: el objetivo es desarrollar un estudio quasi-experimental para conocer los cambios en las respuestas fisiológicas y esfuerzos percibidos en un grupo de quince estudiantes sanos que realizaron una tarea simulada relacionada con la operación de un torno cnc en ambiente de laboratorio. Materiales y métodos: los participantes completaron un total de ocho sesiones que incluyeron pruebas individuales y combinadas de esfuerzo físico y mental. La Carga Mental Baja/Alta y Carga Física Baja/Alta fueron establecidas como variables independientes. Frecuencia cardiaca, desempeño físico, desempeño mental y la percepción de esfuerzo fueron establecidas como variables dependientes. Conclusiones: los niveles altos de carga física tienen un efecto significativo en el incremento de la frecuencia cardiaca, pero no en la percepción de esfuerzo. Los niveles altos de carga mental tienen un efecto significativo en el desempeño físico y mental.

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Assessment of Workload, Fatigue, and Musculoskeletal Discomfort Among Computerized Numerical Control Lathe Operators in Mexico

Cited by 11 publications

References 58 publications

Effects of Fatigue and Grit on Club Sports Coaches

Effects of Fatigue and Grit on Club Sports Coaches

Evaluating the learning performances for CNC machine practice in mechanical engineering degree courses based on students’ mental workload

Physiological and Subjective Responses Associated to Physical and Mental Load in a Simulated Task

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