"psychological factors - sporting performance depends heavily on psychological factors such as motivation (to achieve certain goals), aggression, concentration, focus or attention, the ability to tolerate pain or to sustain effort, the perception of sensations and events in training and competition, the placebo effect, communicative skills, the ability to cope with anxiety or stress, attitudes towards events and participants in sport, attitudes towards winning and losing, learning ability, attitude, mood state, personality, alertness and vigilance, the ability to manage distractions, and the ability to relax effectively."