Nowadays the movement activities play all the time more and more important role in the life of human being. There are many proves, that lack of movement activity leads to lowering of physical fitness, this is parallel manifested by negative trends in somatic parameters; this of course very often negatively influences the quality of individual life. Socio-demographic analysis show in Europe and also in Czech Republic that quantity and also the quality (intensity) of sport activity among adult population are insufficient as a whole. Most Europeans state that the main reason for absence of sports activities is lack of time. In adult Czech Republic population is prevailing overweight and obesity. To this great population overweight contribute more often men and older people. In this article are presented results of testing 569 Czech adult people (273 males and 296 females) older than 18 years. In this contribution there are discussed sex differences results in 6 physical development parameters: fitness score (FS), body height (BH), body weight (BW), BMI, fat tissue percentage (%FAT) and waist hips rate (WHR), which were measured by machine Inbody 720. Presented results show rather negative trends. Parameters of body weight, BMI, fat tissue percentage and waist hips rate seem to be mutually connected. Body weight increases according higher age in all watched periods, both in groups of males and of females, too, though the body height decreases. This influences also BMI, when most of male groups and two oldest female groups are of overweight. Similarly results can be seen in parameters of fat tissue percentage and waist hips rate. Fitness score parameters show greater decrease in male groups when the younger groups have the better results. This parameter in female groups keeps more equal balance and slightly falls after age of 49. These results correspond with some late research, where in the adult population is near 60% men with overweight, but only 46% of women. Among adults in age 18 – 44 years is with normal body weight 67%, but over 45 years it is only 30%.