title: THE RELATION OF WORK PERFORMANCE TO HEART RATE IN AGED MAN.
mesh_terms: D000375:Aging; D035843:Biomedical Research; D004562:Electrocardiography; D005080:Exercise Test; D005853:Geriatrics; D006321:Heart; D006339:Heart Rate; D010092:Oximetry; D005082:Physical Exertion; D010809:Physical Fitness; D010827:Physiology; D012119:Respiration
keywords: AGING; CLINICAL RESEARCH; ELECTROCARDIOGRAPHY; EXERCISE TEST; EXERTION; GERIATRICS; HEART; OXIMETRY; PHYSICAL FITNESS; PHYSIOLOGY; RESPIRATION