Determining the fatigue associated with different task complexity during maintenance operations in males using electromyography features

Alhaag, Mohammed H.; Ramadan, Mohamed Z.; Al-Harkan, Ibrahim M.; Alessa, Faisal M.; Alkhalefah, Hisham; Abidi, Mustufa Haider; Sayed, Abdelaty E.

doi:10.1016/j.ergon.2022.103273

Cited by 11 publications

(3 citation statements)

References 45 publications

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“…Muscle fatigue can be identified by increasing and decreasing median edge frequency ( MEF ) values, and as MEF decreases, muscle fatigue increases [ 22 , 23 , 24 , 25 ]. The MEF value can be obtained in the frequency range of 1–400 Hz after applying the fast Fourier transform, which transforms the EMG signal that changes with time into a frequency.…”

Section: Methodsmentioning

confidence: 99%

How Does the Use of an Intraoral Scanner Affect Muscle Fatigue? A Preliminary In Vivo Study

Lee

Son

et al. 2022

Bioengineering

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The purpose of this study was to evaluate muscle activation and fatigue in the operator during tooth preparation and intraoral scanning by simulating these tasks in two types of dental unit chair systems (UCS). Six participants were recruited, and the above tasks were simulated. Electrodes were placed on the skin over five types of muscles (arm, neck, and shoulder muscles), and the maximal voluntary contraction (MVC) was measured. Electromyography (EMG) was assessed during the simulation, and EMG values were normalized using MVC. The root mean square (RMS) EMG (%MVC) and muscle fatigue (%) were calculated. Owing to a lack of normal distribution of the data, Mann–Whitney U test and Kruskal–Wallis H test were performed for statistical comparison, and Bonferroni adjustment was performed for multiple comparisons (α = 0.05). There was no significant difference in RMS EMG between the two types of dental UCS (intraoral scanning, p = 0.237; tooth preparation, p = 0.543). Moreover, the RMS EMG and muscle fatigue were not significantly different between the two tasks (p > 0.05). There was significant muscle fatigue after the intraoral scanner use was simulated thrice (p < 0.001). It is necessary to refrain from performing continuous intraoral scanning and tooth preparation and to take appropriate rest to reduce the incidence of musculoskeletal disorders in dentists in clinical settings.

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Section: Methodsmentioning

confidence: 99%

How Does the Use of an Intraoral Scanner Affect Muscle Fatigue? A Preliminary In Vivo Study

Lee

Son

et al. 2022

Bioengineering

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“…With exercise, if muscle fatigue occurred, MF shifted from high to low frequencies as indicated by a gradual decrease in MF [54,55]. A negative slope could indicate muscle fatigue, with a more negative slope indicating greater muscle fatigue [56][57][58][59].…”

Section: Measurement and Data Processing Of Semg Signalsmentioning

confidence: 99%

Analysis of the Hanging Actions and Operating Heights of Storage Furniture Suitable for the Elderly

Shi

Zhang

2023

Sensors

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The current functional scale design of storage furniture which the elderly use does not meet their needs, and unsuitable storage furniture may bring many physiological and psychological problems to their daily lives. The purpose of this study is to start with the hanging operation, to study the factors influencing the hanging operation heights of elderly people undergoing self-care in a standing posture and to determine the research methods to be used to study the appropriate hanging operation height of the elderly so as to provide data and theoretical support for the functional design scale of storage furniture suitable for the elderly. This study quantifies the situations of elderly people’s hanging operation through an sEMG test performed on 18 elderly people at different hanging heights combined with a subjective evaluation before and after the operation and a curve fitting between the integrated sEMG indexes and the test heights. The test results show that the height of the elderly subjects had a significant effect on the hanging operation, and the main power muscles of the suspension operation were the anterior deltoid, upper trapezius and brachioradialis. Elderly people in different height groups had their own performance of the most comfortable hanging operation ranges. The suitable range for the hanging operation was 1536–1728 mm for seniors aged 60 or above whose heights were within the range of 1500–1799 mm, which could obtain a better action view and ensure the comfort of the operation. External hanging products, such as wardrobe hangers and hanging hooks, could also be determined according to this result.

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“…Nur et al [14], and Ayaz et al [15], preferred RMS to analyze and interpret the data as RMS calculation gives the best insight on the amplitude of the EMG signal with a waveform that easily be interpreted while Sarker and Mirka [16], Mas'As et al [17], and Phinyomark et al [18] preferred MDF as it is frequently considered as the gold standard for muscle fatigue assessment with sEMG signal due to its versatility to analyze both static and dynamic muscle contraction. Alhaag et al [19], in their recent research, used both RMS and MDF to identify the fatigue associated with different task complexity during maintenance operations while Borges et al [20] also used these two statistical methods to find the fatigue level of novice and elite archers on flexor digitorum superficialis (FDS). To find the correlation between muscle fatigue and the score obtained by the subject, several methods such as ttest, f-test, and Analysis of Variance (ANOVA) can be used to achieve the objective.…”

Section: Figure 1 Flow Chart Of Experiments Conductedmentioning

confidence: 99%

Investigation of muscle fatigue of the archer’s during endurance shooting

Hamdan

Ahmad@Manap²,

Johari³

2022

JMES

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Endurance of Drawing-Aim-Release (DAR) during the shooting process in archery will be causing the muscles to fatigue. Besides, the archer's inability to use the right muscles for DAR will lead to a muscle injury as well as dropping the performance. This study aims to monitor the localized muscle fatigue of an archer during the repetitive DAR and its effect to the archer’s performance. Wet electrode sensors were placed on the specific muscles that are heavily involved in DAR such as Muscle Extensor Digitorum (MED) on the archer's bow arm and the Supraspinatus muscle at the shoulder. In order to induce fatigue, the archer has shot 72 arrows continously in 2 rounds of set. The surface electromyography (sEMG) signals of the muscle contraction are recorded during the shooting for the post-processing analysis. Each score of the shooting was also recorded to correlate with the effect of muscle fatigue to the archer’s performance. The finding of this study is that the MED and Supraspinatus begin to fatigue toward the end of each shooting round. The Root Mean Square (RMS) and Median Frequency (MDF) values for both targeted muscles increased significantly during the 6th end compare to the 1st end. It is also found that there is no correlation between muscle fatigue on MED and Supraspinatus to the score obtained by the archer where the F value is lower than F-critical while Draw (1.9339), Aim (1.3754) and Release (0.6515) phases. In conclusion, this experiment benefits archers and coaches to identify which muscles are vigorously used during the DAR process and allows for precaution and prevention procedures.

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Determining the fatigue associated with different task complexity during maintenance operations in males using electromyography features

Cited by 11 publications

References 45 publications

How Does the Use of an Intraoral Scanner Affect Muscle Fatigue? A Preliminary In Vivo Study

How Does the Use of an Intraoral Scanner Affect Muscle Fatigue? A Preliminary In Vivo Study

Analysis of the Hanging Actions and Operating Heights of Storage Furniture Suitable for the Elderly

Investigation of muscle fatigue of the archer’s during endurance shooting

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