Research Article Evaluation of Posturometric Parameters in Children and Youth Who Practice Karate: Prospective Cross-Sectional Study Anna Brzęk , 1 Andrzej Knapik , 2 Bogusław Brzęk, 3 Paweł Niemiec , 4 Piotr Przygodzki, 5 Ryszard Plinta , 2 and Karol Szyluk 1 1 Faculty of Health Sciences in Katowice, Department of Physiotherapy Chair of Physiotherapy, Medical University of Silesia in Katowice, 12 Medyków St., 40-752 Katowice, Poland 2 Faculty of Health Sciences in Katowice, Department of Adapted Physical Activity and Sport, Medical University of Silesia in Katowice, 12 Medyków St., 40-752 Katowice, Poland 3 All4Health Bogusław Brzęk, Dynamic Medical Center, 38 Rakietowa St., 54-615 Wrocław, Poland 4 Department of Biochemistry and Medical Genetics, School of Health Sciences in Katowice, Medical University of Silesia in Katowice, Medyków 18 Str., 40-752 Katowice, Poland 5 Department of Health Policy, Abbott Laboratories, 21B Postępu Street, 02-676 Warszawa, Poland Correspondence should be addressed to Anna Brzęk; abrzek@sum.edu.pl Received 4 December 2021; Revised 16 May 2022; Accepted 8 June 2022; Published 26 June 2022 Academic Editor: Milena Raffi Copyright © 2022 Anna Brzęk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Reduced physical activity or inappropriate training can cause the development of postural abnormalities. The aim of the present study was to determine the relationship between intensive, controlled physical activity, such as karate, and postural parameters. The study group consisted of 57 young karate competitors aged 9–12 years. The control group included 76 healthy, active children in similar age. The children’s posture, activity level, and time in front of electronic devices were evaluated. The following body posture assessments were carried out: Adams’ test, evaluation of the plumb line, evaluation of the kyphosis, and lordosis angles using a digital inclinometer and shoulder blade position measurements using a pediscoliometer. In the majority of cases, despite evidence of an increase or decrease in the values of the plumb line and scapulae level, the results were still within the normal ranges. In 71.93% of the examined karate-training children, a decrease in torso rotation was noted. The study revealed a visible difference in postural muscle strength by the Mathiass screening test (P <0:00001). The children in the control group spent more time in front electronic devices than the karate-training children did (P <0:007). Postural defects regression was more often observed in the study group than in the controls (P < 10 -8 ). The frequency of postural defects stabilization was also significantly higher in the study group than in the control children (P =0:001). Conversely, postural defects progression was significantly more frequent in the control group than in young karate competitors (P < 10 -8 ). These differences remained significant in subgroups of girls and boys. Physical activity performed regularly and under the direction of a professional trainer can prevent postural disorders. 1. Introduction Technology development in modern civilization causes life- style changes in societies. This includes young people [1]. In addition to many positive changes, some negative changes—- from the health point of view—also occur. One of the most important negative changes is a reduction in the level of phys- ical activity (PA), which often decreases to a level below the daily recommendation for good health (MVPA) [2]. Usually, the decrease in PA level is a consequence of children and young people spending increasingly more time in front of a TV, computer, or tablet [3, 4]. WHO recom- mendation has shown that the optimal level of PA is an essential factor in the proper development of children [2]. Therefore, PA conditions, courses, and consequences are being examined [5, 6]. The definition of the proper body posture points to individual variability, although it is possi- ble to point to some common features defined according to Hindawi BioMed Research International Volume 2022, Article ID 5432743, 11 pages https://doi.org/10.1155/2022/5432743