Experts have introduced infant swimming, which means that four-month-old babies are able to independently move in the water even before they learn how to walk. Early beginnings of swimming have a significant influence on children's physical, psychological, social and emotional development. During physical activity in active skeletal muscles due to increased oxidation of nutrients, the production of heat greatly increases, so we wanted to find out what is happening with the body temperature of infants during exercise in the water, if infants are spilled with water on the head or not and if during workout they use pants made of neoprene or just water diapers. We wanted to use the results of our research to produce an exercise where the infant's body temperature does not fall during exercise in the water. The measurements were carried out in a small pool of the Faculty of Sport in Ljubljana, within a 10 - hour swimming course for infants, on 13 infants aged 8-12 months, with average age 9,1 months. 5 of them were using pants made of neoprene and the other 8 used water diapers. The temperature of the water in which the exercise was carried out ranged between 32.1 ° C and 32.7 ° C, with average water temperature 32,3°C. During the measurements. Baby's body temperature was measured every 5 minutes from the entrance in the wardrobe to the departure, in the left ear using the Braun ThermoScan ear thermometer. We found that there are significant differences in body temperature between the times of measurements, that spilling infants head with water leads to a greater drop in body temperature, than if they are not spilled over the head and that the body temperature of babies carrying neoprene pants is not higher the whole exercise than in infants using water diapers.
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