The main and leading area of ​​my scientific interest are the developmental problems of children with hearing impairments, which concerned the evaluation of developmental processes and identification of determinants of this development from the holistic standpoint of the problem. . Most of my research work in this field concerne auxology, Moreover, the period of involution in ontogenesis, i.e. issues related to adults, the elderly and factors determining their quality of life, with particular emphasis on their lifestyle, was also one of the areas of my research and scientific interest. Furthermore, I have attempted to analyze and evaluate the quality of life of adults in the period of aging and with disabilities (intellectual disabilities, visual impairments) in the context of the threat of diseases and problems of the involutional changes in the body structure and body posture. My research interests are complemented by the third type of problems, i.e. sport for people with disabilities and its health and social dimension. Particularly with regard to people with cervical spinal cord injuries, amputations and blind