The Effects of Training on the Physiological Systems The effects of frequent and regular exercise on the physiological systems of the body have been observed repeatedly during standard work experiments. Among the changes which have been reported arc the following:   Slight increase in body weight.   Longer duration of effort before exhaustion.   Slight decline in the rate and depth of breathing at rest.   Decreased pulmonary ventilation during moderate work.   Ability to attain a greater minute volume of ventilation in exhausting work.   Ability to attain a greater oxygen consumption during exhausting work.   Greater mechanical efficiency as indicated by a lower oxygen consumption for a given amount of work.   Greater utilization of anaerobic energy reserves.   Increase in glycogen and creatine content of the muscles. Lower resting heart rate.   Smaller increase in heart rate during moderate work.   Larger stroke volume.   More rapid return of heart rate and blood pressure to normal following activity.   Lower blood lactate concentration for the performance of a given amount of work.   Ability to achieve a higher blood lactate concentration before exhaustion occurs.   Reduction in the number of movements required for a task. Reduction in concentration on task required by higher centers of the nervous system.		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 Distribution of Energy