A professional who develops, implements, and coordinates exercise programs and administers medical tests, under physician's supervision, to program participants to promote physical fitness. Responsibilities include:

• Explains program and test procedures to participant.
• Interviews participant to obtain vital statistics and medical history and records information.
• Records heart activity, using electrocardiograph (EKG) machine, while participant undergoes stress test on treadmill, under physician's supervision.
• Measures oxygen consumption and lung functioning, using spirometer.
• Measures amount of fat in body, using such equipment as hydrostatic scale, skinfold calipers, and tape measure, to assess body composition.
• Performs routine laboratory test of blood samples for cholesterol level and glucose tolerance, or interprets test results.
• Schedules other examinations and tests, such as physical examination, chest x ray, and urinalysis.
• Records test data in patient's chart or enters data into computer.
• Writes initial and follow-up exercise prescriptions for participants, following physician's recommendation, specifying equipment, such as treadmill, track, or bike.
• Demonstrates correct use of exercise equipment and exercise routines.
• Conducts individual and group aerobic, strength, and flexibility exercises.
• Observes participants during exercise for signs of stress.
• Teaches behavior modification classes, such as stress management, weight control, and related subjects.
• Orders material and supplies and calibrates equipment.
• May supervise work activities of other staff members.