Upper Limb Muscle Activity among Workers in Large-Herd Industrialized Dairy Operations

Mixco, Anthony; Masci, Federica; Brents, Colleen A.; Rosecrance, John

doi:10.3389/fpubh.2016.00134

Cited by 8 publications

(6 citation statements)

References 24 publications

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“…Limitations of our study design relate to our measurement method, as well as selection and timing of exercises. Indeed, skin surface EMG recordings may be affected by cross talk from nearby muscle groups . The time assigned to perform the exercises in this study (3 min) is much less than the average duration of surgery and our results may therefore underestimate the upper extremity workload experienced by surgeons in the clinical setting.…”

Section: Discussionmentioning

confidence: 84%

Muscular workload of veterinary students during simulated open and laparoscopic surgery: A pilot study*

et al. 2017

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Section: Discussionmentioning

confidence: 84%

Muscular workload of veterinary students during simulated open and laparoscopic surgery: A pilot study*

et al. 2017

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“…Some studies, instead, directly measure when FSE are found. Most of the studies reported that fatigue is found in industrial tasks in working places [ 150 , 167 ] but also in simulated environments [ 29 , 32 ]. In a limited number of studies, the effects of FSE were not observed or they were under the limit for high risk of MSD development [ 117 , 136 ].…”

Section: Resultsmentioning

confidence: 99%

“…The largest category consisted of papers that assessed the risk of MSD development, identifying most of the working activities as having a high risk, since the FSE exceeded the recommended threshold limits. These assessments were performed mainly with scales and questionnaires [ 193 , 202 ], but in some cases also kinematics and EMG signals were used [ 135 , 167 ]. Very few studies did not find FSE in the working tasks [ 117 , 136 ].…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Assessments of the Upper Limb for Determining Fatigue, Strain and Effort from the Laboratory to the Industrial Working Place: A Systematic Review

et al. 2023

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Recent human-centered developments in the industrial field (Industry 5.0) lead companies and stakeholders to ensure the wellbeing of their workers with assessments of upper limb performance in the workplace, with the aim of reducing work-related diseases and improving awareness of the physical status of workers, by assessing motor performance, fatigue, strain and effort. Such approaches are usually developed in laboratories and only at times they are translated to on-field applications; few studies summarized common practices for the assessments. Therefore, our aim is to review the current state-of-the-art approaches used for the assessment of fatigue, strain and effort in working scenarios and to analyze in detail the differences between studies that take place in the laboratory and in the workplace, in order to give insights on future trends and directions. A systematic review of the studies aimed at evaluating the motor performance, fatigue, strain and effort of the upper limb targeting working scenarios is presented. A total of 1375 articles were found in scientific databases and 288 were analyzed. About half of the scientific articles are focused on laboratory pilot studies investigating effort and fatigue in laboratories, while the other half are set in working places. Our results showed that assessing upper limb biomechanics is quite common in the field, but it is mostly performed with instrumental assessments in laboratory studies, while questionnaires and scales are preferred in working places. Future directions may be oriented towards multi-domain approaches able to exploit the potential of combined analyses, exploitation of instrumental approaches in workplace, targeting a wider range of people and implementing more structured trials to translate pilot studies to real practice.

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“…Anthropometric measurements were recorded from all subjects in both the U.S. and Italian research sites, according to methods described by Rodgers ( 28 ) and Mixco et al ( 29 ). These measurements included functional overhead reach, functional standing height (wearing shoes), shoulder acromial height, forward functional reach, and grip breadth, which were measured as the circumference between the thumb and middle finger.…”

Section: Methods and Proceduresmentioning

confidence: 99%

“…These measurements included functional overhead reach, functional standing height (wearing shoes), shoulder acromial height, forward functional reach, and grip breadth, which were measured as the circumference between the thumb and middle finger. In both the countries, surface electromyography (sEMG) with a sampling frequency of 1,000 Hz using Biometrics DataLOG (Biometrics, England) was collected from the upper trapezius, anterior deltoid, biceps brachii, wrist flexors, and wrist extensors as described in detail previously ( 29 ). At the U.S. dairy farms, data were recorded for the length of time it took to completely milk a pen of cows (range of 225–275 cows), approximately 45–90 min.…”

Section: Methods and Proceduresmentioning

confidence: 99%

Comparison of Upper Limb Muscle Activity among Workers in Large-Herd U.S. and Small-Herd Italian Dairies

Masci

Mixco

Brents

et al. 2016

Front. Public Health

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ObjectivesCommercial cow milking tasks, regardless of dairy size, have been documented in many regions of the world as strenuous work requiring high muscular effort, awkward positions, and task repetition. Large-herd dairies are common in the U.S., while Europe historically has mostly small-herd dairies. The objective of this study was to compare the upper limb muscle activity during milking tasks between workers at large-herd U.S. dairies and small-herd Italian dairies. This is the first international study directly comparing upper limb muscle activity among dairy workers from different countries using identical methods.MethodsData were collected at 6 large-herd dairies in the U.S. region of Colorado and at 21 small-herd Italian dairies in the Lombardy region. Surface electromyography (sEMG) from the trapezius, anterior deltoid, biceps brachii, wrist flexors, and wrist extensors muscles was recorded from all participating workers (N = 65). Electromyography data were normalized to functional maximum voluntary contractions. Anthropometric measurements were also recorded.ResultsUpper limb muscle activity was generally greater among workers in the large-herd U.S. dairies compared with small-herd Italian dairies. The amount of muscular rest as a percent of the work time was significantly greater among large-herd U.S. dairy workers.ConclusionThe differences revealed in sEMG and percent muscular rest among workers from the U.S. and Italy are likely due in part to differences in work processes adopted by fast-paced industrialized large-herd dairies compared with the slower, but sustained work processes performed at small-herd dairies.

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Upper Limb Muscle Activity among Workers in Large-Herd Industrialized Dairy Operations

Cited by 8 publications

References 24 publications

Muscular workload of veterinary students during simulated open and laparoscopic surgery: A pilot study*

Muscular workload of veterinary students during simulated open and laparoscopic surgery: A pilot study*

Biomechanical Assessments of the Upper Limb for Determining Fatigue, Strain and Effort from the Laboratory to the Industrial Working Place: A Systematic Review

Comparison of Upper Limb Muscle Activity among Workers in Large-Herd U.S. and Small-Herd Italian Dairies

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