1. The athlete's background

• Age
• Experience
• Level of Training
• Technique
• Personal characteristics
• Technique
• Insufficient warm-up
• Intensive competition and training programme
• Health problems
• Nutritious diet
• Rest, relaxation and sleep

2. Sports equipment and facilities

• Sports facilities are not always suitable for the activities for which they are used
• Lighting of the activity area may affect the judgement of distances, perception of colours and athletes visual accuracy
• Equipment used in any sport may be inadequate, of poor design and be defective
• Protective clothing can be faulty, insufficient or even removed
• Unsuitable weather conditions may increase the risk of injury

3. Characteristics of sports
Different sports make different demands on the athlete and competitive sport can increase the risk of injury. Regardless of the level at which it is played, each sport is unique in terms of the demands it places on participants and its special characteristics that can cause both overuse and traumatic injuries.