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Published in:
2019 | OriginalPaper | Chapter
Grip and Pinch Strength of the Population of the Northwest of Mexico
Authors : Enrique de la Vega-Bustillos, Francisco Lopez-Millan, Gerardo Mesa-Partida, Oscar Arellano-Tanori
Published in: Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018)
Publisher: Springer International Publishing
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Abstract
At present, work injuries represent a high cost to companies, mainly those that involve manual work in their activities. The analysis of hand and finger strength in these types of tasks is essential in the design of workstations and the reduction of upper limb injuries. Studies have been carried out in many countries such as the United States and Singapore to determine the strength of hands and fingers of their respective populations; however, there is no evidence of similar research in Mexico.
OBJECTIVE: The main objective of this research is to determine the maximum grip strength and pinch with and without gloves recommended for the population of northwestern Mexico, with the purpose of establishing force standards categorized by age and gender. An experiment was carried out in which 700 volunteers (470 men and 230 women) between 18 and 30 years of age participated with standardized positioning and instructions. All the volunteers were students with little or no industrial experience. Age was arbitrarily categorized into three groups: 18–19, 20–24 and 25–30 years.
METHODOLOGY: The research subjects were asked to perform their maximum muscular effort voluntary of grip and pinch in three attempts, holding this effort for three seconds, spaced for a minute, in both hands, with and without gloves and the average of the three efforts was taken as a definitive data. All data were recorded in kilograms.
RESULTS: The results show that for women in the majority of the tests there is no significant difference between using or not using glove, while in the case of men is it no preferable to use a glove. In the other hand, it can be said that for women, there is a difference in the force exerted with dominant and non-dominant hand, and with the dominant hand, greater force is exerted. This same result is repeated in the case of men. Different results were obtained for women and men. In the case of women, there was no significant difference between wearing a glove and not wearing a glove, while in the case of men, a significant difference was observed, the strength exerted when a glove was not worn.