Objective: Introduction: Different forms of physical education lessons organization, including swimming classes were introduced in education process without studying of its healthsaving effectiveness. The aim of this study was hygienic assessment of different forms of physical education lessons organization in primary school.
Patients and methods: Materials and methods: Cross-sectional study was conducted in two schools with different organization of physical education lessons. The experimental group (E) consisted of 408 children of 1‑4 year of study (210 girls and 198 boys) who were engaged in swimming in the school basin during one of the lessons of physical education. Control group (C) consisted of 279 primary school children (210 girls and 156 boys) from a neighboring educational institution where all physical education lessons were organized in the gym. The integral estimation of physical education classes was performed. Action timing with pulse measurement during gym and swimming lessons was held. Target heart rate level was calculated using Carvonen formula. Heart rate variability parameters were measured using diagnostic complex FAZAGRAF® .
Results: Results: A low level of physical load in E and C groups causes functional tension of cardio-vascular system. Pulse restitution and distribution on the types of vegetative regulation indicates that children attended one swimming lesson per week recovered better after physical load comparing to the C group.
Conclusion: Conclusions: Primary schoolchildren have low physical endurance. Attending one swimming lesson per week contributes to better recovery after physical load and improves vegetative regulation.
Keywords: exercise intensity; physical education lesson; primary school children; swimming lesson; heart rate variability.