Table of contents : Unit 1 – The human body in motion 1 Introduction to physical activity, sport and exercise 2 Structure and function of the musculoskeletal system 3 Preventing musculoskeletal injuries and illnesses 4 Legal and illegal methods that enhance performance of the musculoskeletal system 5 The cardiovascular system 6 The respiratory system 7 Factors affecting the cardiorespiratory system 8 Legal and illegal methods that enhance performance of the cardiorespiratory system Unit 2 – Physical activity, sport and society 9 Physical activity concepts 10 Physical, social, mental and emotional benefits, and health risks of inactivity 11 Assessment of physical activity and sedentary behaviour 12 Sociocultural influences on participation in physical activity 13 Prevalence and trends in physical activity, sport and sedentary behaviour in the population 14 Changing behaviour: the social–ecological model and the Youth Physical Activity Promotion Model 15 Promoting physical activity and reducing sedentary behaviour 16 Contemporary issues associated with physical activity and sport