The authors found no previous study that statistically analyzed the anthropometric accommodation percentage of univariate and multivariate hand shape models in the northwestern Mexican population. This study aimed to model the northwest Mexican population’s dominant hand shape through the univariate and multivariate approaches and to compare their accommodation percentages to provide additional information on what approach results could be used. found 14 cases for four-hand dimensions of the northwest Mexican population, using a 3D-PCA analysis and archetypal analysis for the 98% adjusted sphere. Jee and Yun analyzed the factors influencing handshape (i.e., handbreadth, palm length, and finger length) and distinguished four handshape types using factor and cluster analyses. studied the relationship between hand size, grip span and force exerted, and found that grip span preferences were different in small and medium-large hand size subjects.
#Anthropometrics graphical analysis portable#
Eksioglu analyzed different grip spans to determine the optimum range for hand-held devices (such as portable power tools), and Lee et al. developed a bicycle handle family of models using clustering techniques (k-means), obtaining three model sizes: small, medium and large. Despite the importance of hand anthropometric data, there have been few studies related to handshape and size. Several studies have investigated representative human models for different populations and anatomical regions across the world by using multivariate approaches such as principal component analysis (PCA) and archetypal analysis (AA), mainly in crew cab design. Principal Component Analysis (PCA) and Archetypal Analysis (AA) are some of the most commonly multivariate boundary approaches used in anthropometrics. In the boundary manikin approach, a set of individual manikins representing the extremes of the most critical measures is identified to accommodate a target level of accommodation or percentage of the target user population. Manikins, 2D or 3D human models, have been used to develop a set of human models that can be used to evaluate the fitting of the designs.
It has also been demonstrated that the use of percentiles can be inappropriate because percentile values are not additive unless they are equal to 50%. It is well known that most anthropometric workstation and hand tool designs are based on univariate anthropometric data.
Describing the hand differences among the study subjects has also been reported in the literature. To diminish the risk of WMSD, there have been several studies related to hand anthropometry data and their comparison to those of other populations, such as agricultural workers, industrial workers, and mix office–manufacturer workers. (a) opening/stretching fingers or (b) shrinking fingers to use the scroll button and to displace the mouse. Using an incorrect hand tool size can cause awkward postures, e.g. Firstly, all persons should be able to operate particular equipment because personnel are essentially an inter-changeable component of any system.Accommodation problem when using a computer mouse. A designer is required to ensure the following two things while utilizing the anthropometric data. A large bank of this data is utilized by ergonomists for the design of physical facilities.Īn agronomist is concerned with many aspects such as strengths of various muscles and ranges of movements. Of course, these physical features and functions are subject to variations according to sex, age and built etc. The physical characteristics are dimensions of hands and feet and other body members, weight, maximum hand and foot reaches in a standing and a sitting posture etc. It is well known that the comfort safety and the performance of people is influenced by the extent to which these facilities “fit” people. All these facilities must have a satisfactory relationship with physical characteristics of human beings. These are chairs tables, desks, seats, bicycles, cars, and special purpose clothing, machine controls such as hand levers, foot pedals etc. Man has to use physical facilities to work during all the time. Including linear dimensions, weight, volume and range of movements etc. It may be defined as the study which deals with the measurement of physical features and functions of the human body.
0 kommentar(er)
