Physical education and training. Physical fitness 12 Relation to psychology. Sports psychology 6 Coaching 5 Games and amusements 4 Sports 4 Ball games: Baseball, football, golf, etc 3 Athletic contests. Sports events 2 Football 2 Physical education facilities. Sports facilities, Including gymnasiums, athletic fields, etc 2 Physical measurements. Physical tests, etc 2 Recreational areas and facilities. Recreation centers 2 exercise 2 human 2 outcome assessment 2 ADAPTATIONS 1 Article 1 BASEBALL 1 Biomechanics 1 CONTRACTIONS 1 Customer services. Customer relations 1 Data mining 1 Detectors. Sensors. Sensor networks 1 Diseases of the circulatory (Cardiovascular) system 1 ENHANCE 1 EXERCISE 1 Electromyostimulation 1 Elmtromyostimulation 1 Exercise 1 Experimental psychology 1 Expert systems (Computer science). Fuzzy expert systems 1