Hand grip strength (HGS) serves as a multifaceted and critical parameter within the domain of motor function and is widely recognized as a pivotal aspect in the comprehensive evaluation of the development of school-aged children. The aim of the research was to determine the values of HGS, the trend of changes and differences between boys and girls aged 11-14 years from Bosnia and Herzegovina. A cross-sectional survey was conducted on a sample of 585 students. The subsample was divided into 307 boys (11y = 81; 12y = 87; 13y = 77; 14y = 62) and 278 girls (11y = 66; 12y = 83; 13 y =79; 14y = 50). Hand muscle strength was measured using the method of isometric dynamometry in laboratory conditions, with a standardized test - Hand grip (according to the American Society of Hand Therapists). The force achieved during the maximum hand grip (dynamometry) was measured with a digital hand dynamometer CAMRY-EH101, USA. Statistically significant differences between male and female respondents were confirmed (for age 12, T = -2.651, p<0.009; for age 13, T =-5.178; p<0.000; for age 14, T =-7.124; p<0.000). In both sexes, the dominance of the strength of the right (dominant) hand than left (non-dominant) hand is evident. The study confirmed a positive trend of strength development in both sexes, as well as gender differences in the HGS test between children aged 12 to 14 years.

Abstract:  In informal circles there can still be found division of sport according to criterion of sex, therefore we have so called "male" and "female" sports. Reasons for this division can be found in different places but it seems that gender (in) equality, which was particularly pronounced in the past, is the foundation of this understanding of sports. Tradition observes sport as "male" activity in which certain anthropological dimensions, such as body constitution or muscle strength determine success, dominantly, where participation of women in such activities becomes pointless, unnecessary and irrelevant, because they have "weaker body constitution". This approach and understanding of sport lead to the opinion that historically speaking, women in all aspect of social development didn't have equal rights in doing physical activities and sport, in general, although their needs for movement were and still are on the same level as men's. The goal was to use a descriptive method to analyze and define certain gender differences in the area of anthropological dimensions (morphology, cardiovascular system, functional abilities, body composition, somatic changes during life, ...) on the basis of which certain recommendations were given for physical activity and the training process of women. Playing sports and physical exercise are important for women's health, physical fitness and physical appearance and improve their quality of life. It can be concluded that physical activity has an extremely good and positive effect on the psychophysical state of the female organism and numerous health benefits compared to women who lead a sedentary lifestyle.