Investigation of CO₂ production depending on physical activity of students

This paper aims to carry out measurements of indoor air temperature, relative humidity and carbon dioxide (CO₂) concentrations as well as to determine CO₂ production by students and teacher during various physical activities. Two classrooms of Technical University of Kosice were selected for the research. Results of objective measurements confirmed strong correlation between CO₂ concentration occupancy for all measurements. Recommended value for indoor CO₂ level according to Pettenkofer (1,000 ppm) was exceeding in 60.9%. Results of this study showed the insufficient ventilation intensity in classrooms as well as obvious rise of CO₂ concentration during the exams. The highest increase of CO₂ was recorded during harder physical activity (run on the spot, squats, right and left side lunges, and rotating of the hips). Regarding CO₂ production by respondents it can be see that it is visibly increased with increasing physical activity.