Kinesthesis The proprioceptor nerve receptors are located in the muscles, tendons and joints. These nerve endings are stimulated by stretching. The response to the proprioceptor stimulus is a kinesthetic impression or awareness of a change in the position of the body or of some part of the body. This mechanism enables the tennis player to watch the ball and the court position of his opponents without also having constantly to cheek the position of his stroking arm and racket in order to contact the ball at the proper lime and at the proper place on the racket. The golfer is able, through kinesthetic impressions, to gauge the extent of his backswing and the position of his wrists and hands without looking away from the ball during the backswing. The gross movements of the stroke which involve a coordination of the movements of the legs, hips, waist, shoulders, arms and wrists become so accurate in practice that the face of the club strikes the ball with force and accuracy and the ball is sent to a small target 200 yards away. With further practice the timing, accuracy and force of the stroke are improved with the result that the ball travels farther and lands closer to the target with no greater expenditure of energy.		Home Components of Physical Fitness Clinical Examination Differences Between Fit and Unfit Men Physiological Elements of Fitness The Step Test The Effects of Training on the Physiological Systems Work Output Physical Condition of Muscle Application of Muscular Force Maintaining Optimum Strength Tests of Muscular Strength Strength and appearance Strength as a measure of physical fitness Strength as affected by organic problems Strength as prophylaxis Role of inactivity in production of disease Lack of Sociability in Work Lactic Acid System Muscular Form Capillary Growth Heart Size Heart Rate Training produces physicochemical changes Muscular Strength Nervous Stimulation and Muscular Strength Quality of Champions Factors Which Limit Skill Kinesthesis Balance Reaction Time Muscular Tension Visual Aim Skill Center in the Brain Endurance for Exhaustive and Moderate Work Distribution of Energy