Table 2. Description of the PA categories of the PAB. Endurance sports Low intensity Slight increase in breathing frequency, talking is possible Moderate intensity Medium increase in breathing frequency; sweating; talking is aggravated High intensity Large increase in breathing frequency, profuse sweating, talking is hardly possible Examples All endurance sports like long distance running, swimming, cycling, cross country skiing, hiking in mountainous areas, fast walking etc. Sports with high speed and/or strength demands Description Some sports demand not just endurance, but also speed and/or strength Examples Ball games like football, volleyball, basketball, tennis; or wrestling, judo, resistance training, field events like sprinting, jumping, throwing etc.