摘要:The purpose of this study was to examine the physical characteristics, body composition, and health-related fitness components in Slovak high school students. Data on body composition and health-related fitness were obtained from 848 students attending 14 high schools in the Prešov self-governing region. Health-related fitness levels were determined using the FITNESSGRAM test battery. Body composition was measured using a direct segmental multifrequency bioelectric impedance analyzer InBody 230. The results of the study showed gender differences in anthropometric measures, body composition parameters, and health-related fitness components. Analysis of variance among subgroups with different performance levels in particular tests showed an effect on anthropometric measures and body composition, especially on abdominal strength and endurance and upper body strength and endurance. Regarding gender differences, boys were found to be taller and heavier in all age groups. The BMI values showed a normal rate of physical development in all age groups and both genders. Overall, body composition was more optimal for boys than for girls. Girls were found to have a higher degree of abdominal fat and visceral adiposity. Boys were found to have higher levels of upper body strength and endurance and abdominal strength and endurance. The difference in flexibility level was statistically significant between 16 year-olds.