Biomechanical Assessments in Sports and Ergonomics

Madeleine, Pascal; Samani, Afshin; Zee, Mark de; Kersting, Uwe G.

doi:10.5772/21255

Cited by 4 publications

(6 citation statements)

References 98 publications

(116 reference statements)

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“…There are many industrial situations where workers are required to wear personal PC and equipment (PPE), e.g., firefighters, chemical workers, coldstore workers, army personnel and those working in the steel and forestry industries. Although this PC may provide protection from the primary hazard, e.g., heat or chemicals, it can also create ergonomic problems [46][47][48]. In recent years, many PPE product standards have been introduced.…”

Section: Clothing Ergonomicsmentioning

confidence: 99%

A Review of Contemporary Techniques for Measuring Ergonomic Wear Comfort of Protective and Sport Clothing

Teyeme

Malengier

Tesfaye

et al. 2021

Autex Research Journal

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Protective and sport clothing is governed by protection requirements, performance, and comfort of the user. The comfort and impact performance of protective and sport clothing are typically subjectively measured, and this is a multifactorial and dynamic process. The aim of this review paper is to review the contemporary methodologies and approaches for measuring ergonomic wear comfort, including objective and subjective techniques. Special emphasis is given to the discussion of different methods, such as objective techniques, subjective techniques, and a combination of techniques, as well as a new biomechanical approach called modeling of skin. Literature indicates that there are four main techniques to measure wear comfort: subjective evaluation, objective measurements, a combination of subjective and objective techniques, and computer modeling of human–textile interaction. In objective measurement methods, the repeatability of results is excellent, and quantified results are obtained, but in some cases, such quantified results are quite different from the real perception of human comfort. Studies indicate that subjective analysis of comfort is less reliable than objective analysis because human subjects vary among themselves. Therefore, it can be concluded that a combination of objective and subjective measuring techniques could be the valid approach to model the comfort of textile materials.

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Section: Clothing Ergonomicsmentioning

confidence: 99%

A Review of Contemporary Techniques for Measuring Ergonomic Wear Comfort of Protective and Sport Clothing

Teyeme

Malengier

Tesfaye

et al. 2021

Autex Research Journal

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“…On the contrary, the workspaces as well as the ROM were not constrained to simulate a more real slaughterhouse task. The biomechanical assessments (motion capture, reaction forces, and EMG) in laboratory conditions enable the use of advanced equipment ensuring high quality recordings as noise sources (electrical, light, and temperature) are controlled (Madeleine et al 2011). All in all, our study was intended to serve as a basis for investigating the pros and cons of a musculoskeletal model in relation to slaughterhouse work.…”

Section: Simulating a Work Task In Laboratory Conditionsmentioning

confidence: 99%

“…One should note that the sole use of EMG recordings in occupational settings only provides information on the level and duration of muscular activation of superficial muscles. Moreover, electrical noise can alter the quality of EMG especially in real conditions (Madeleine et al, 2011).…”

Section: Musculoskeletal Simulation and Surface Electromyographymentioning

confidence: 99%

“…In comparison, bipolar surface electromyography (EMG) recordings provide only temporal aspects of the level of activation from the muscle of interest. However, EMG recording are still often performed in ergonomics for such purpose (Madeleine et al, 2011). Thus, musculoskeletal simulation offers undeniable advantages when evaluating the design of a workstation.…”

Section: Introductionmentioning

confidence: 99%

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Strengths and limitations of a musculoskeletal model for an analysis of simulated meat cutting tasks

et al. 2014

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This study assessed the capacity of a musculoskeletal model to predict the relative muscle activation changes as a function of the workbench height and the movement direction during a simulated meat cutting task. Seven subjects performed a cutting task alternating two cutting directions for 20 s at four different workbench heights. Kinematics, electromyography (EMG), and cutting force data were collected and used to drive a musculoskeletal model of the shoulder girdle. The model predicted the muscle forces exerted during the task. Both the recorded and computed activation of the muscles was then compared by means of cross-correlation and by comparison of muscle activation trends with respect to the workstation parameters, i.e. cutting direction and workbench height. The results indicated that cutting movements involving arm flexion are preferable to movement requiring internal arm rotation and abduction. The optimal bench height for meat cutting tasks should be between 20 and 30 cm below the worker's elbow height. The present study underlines a beneficial use of musculoskeletal models for adjusting workstation parameters.

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“…Specifically, EMG signals, which measure the electrical activity related to the contraction of muscles in human bodies [ 5 ], are of paramount importance, given that they are fundamental for clinical applications, such as muscle fatigue assessment [ 6 ], diagnosis of neurological disorders [ 5 ], and biomechanical assessment [ 7 ]. In addition, they can be used for controlling interfaces [ 8 ], which enables the use of bionic prostheses [ 9 ] and can provide computer access for disabled persons [ 10 ], or even be employed in human emotion classification schemes [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

SEMG signal compression based on two-dimensional techniques

2016

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BackgroundRecently, two-dimensional techniques have been successfully employed for compressing surface electromyographic (SEMG) records as images, through the use of image and video encoders. Such schemes usually provide specific compressors, which are tuned for SEMG data, or employ preprocessing techniques, before the two-dimensional encoding procedure, in order to provide a suitable data organization, whose correlations can be better exploited by off-the-shelf encoders. Besides preprocessing input matrices, one may also depart from those approaches and employ an adaptive framework, which is able to directly tackle SEMG signals reassembled as images.MethodsThis paper proposes a new two-dimensional approach for SEMG signal compression, which is based on a recurrent pattern matching algorithm called multidimensional multiscale parser (MMP). The mentioned encoder was modified, in order to efficiently work with SEMG signals and exploit their inherent redundancies. Moreover, a new preprocessing technique, named as segmentation by similarity (SbS), which has the potential to enhance the exploitation of intra- and intersegment correlations, is introduced, the percentage difference sorting (PDS) algorithm is employed, with different image compressors, and results with the high efficiency video coding (HEVC), H.264/AVC, and JPEG2000 encoders are presented.ResultsExperiments were carried out with real isometric and dynamic records, acquired in laboratory. Dynamic signals compressed with H.264/AVC and HEVC, when combined with preprocessing techniques, resulted in good percent root-mean-square difference compression factor figures, for low and high compression factors, respectively. Besides, regarding isometric signals, the modified two-dimensional MMP algorithm outperformed state-of-the-art schemes, for low compression factors, the combination between SbS and HEVC proved to be competitive, for high compression factors, and JPEG2000, combined with PDS, provided good performance allied to low computational complexity, all in terms of percent root-mean-square difference compression factor.ConclusionThe proposed schemes are effective and, specifically, the modified MMP algorithm can be considered as an interesting alternative for isometric signals, regarding traditional SEMG encoders. Besides, the approach based on off-the-shelf image encoders has the potential of fast implementation and dissemination, given that many embedded systems may already have such encoders available, in the underlying hardware/software architecture.

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Biomechanical Assessments in Sports and Ergonomics

Cited by 4 publications

References 98 publications

A Review of Contemporary Techniques for Measuring Ergonomic Wear Comfort of Protective and Sport Clothing

A Review of Contemporary Techniques for Measuring Ergonomic Wear Comfort of Protective and Sport Clothing

Strengths and limitations of a musculoskeletal model for an analysis of simulated meat cutting tasks

SEMG signal compression based on two-dimensional techniques

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