Study on hand grip orientations versus hand grip strength for Malaysia adults

Lim, Wan Qin (2018) Study on hand grip orientations versus hand grip strength for Malaysia adults. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Physiological changed and loss of handgrip strength were natural consequences of the ageing process. Previous studies have been shown that physiological changed will affect the handgrip strength, however, there are no studies which have developed to show the relationship between handgrip orientations and handgrip strength among Malaysian population. Hence, the objectives of this study were to collect and examine the correlation between handgrip orientations and handgrip strength in a representative sample of the youth population in Malaysia. A group of Malaysia male aged between 20 to 39 years had been tested with a digital Jamar dynamometer with two trials on dominant hand when wrist in three positions which were neutral, supination and pronation in standing posture. In order to achieve the objectives, handgrip strength data have be collected from a 125 subjects, recruited from Malaysia. Then, a statistical analysis were carried out to identify the handgrip orientations that significantly influence handgrip strength. Then, hand grip strength data of the hand dominances, normal and abnormal BMI in term of grip strength as well as the anthropometric dimensions were obtained and compared with the data for neutral, pronation and supination positions, in order to determine if there is a significant difference in the measurements between these groups. This finding indicates the importance for product designers to gain an understanding on the differences in the physiological dimensions of male subjects in order to create ergonomic products that meet their needs. The significant contributions of this study are as follows. First, the data findings of this study can be used to build a database of hand grip strength measurements for the male youth population in Malaysia and were be used in the hand rehabilitation program and engineering anthropometry design such as equipment, workplace, job design and product design with the goal of efficiency, safety and comfort of the operators and users.. Second, a methodology was being proposed in this study which will be useful for researchers who intend to deepen their understanding on the relationship between hand grip strength and hand wrist orientations of male youth Malaysians. The regression models of anthropomotric dimensions and grip strength in different hand orientations was developed in this study can be used as a means to predict the hand grip strength of the male populations in Malaysia, which will assist product designers in creating ergonomically designed products.

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