INTRODUCTIONThe cardiorespiratory and cardiovascular responses to upper body exercises received attention in the 1980s and 90s. This was to test out the potential alternative of exercise training in arms for certain justified individuals including patients with orthopedic limitations, paraplegics, patients suffering from circulatory problems (intermittent claudication) in the legs, patients who exhibits signs and symptoms of myocardial ischemia (MI) and who suffer cardiac discomfort during continuous arm exercises, and people for whom arm work is the major part in their physical activity. For these subjects, upper body and extremity conditioning or evaluation is particularly important.The purpose of conducting this investigation was to compare cardiovascular and cardiorespiratory responses and RPE in young men and women using combined arm and leg ergometer during low to high levels of power output.METHODSTwelve healthy individuals volunteered to participate in this study (age 22 ± 3 years, weight 77 ± 11 kg, height 175 ± 10 cm). All subjects gave informed consent to the experiment. No subject possessed any known pathological condition and all were physically active.Each subject performed at work rates of 70 W and 140 W for three minutes on a ergometer in each of two exercise modes. The Air-Dyne ergometer is a stationary cycle that utilizes the resistance of air on wind vanes set perpendicular to the flywheel. The resistance and thus the workload is proportional to the angular velocity of the perimeter of the wind vane flywheel. Power output is produced by foot pedals and arm levers that are connected to the flywheel by a common drive shaft. Thus, both the foot pedals and arm levers move together when one or the other is in operation.The two work tests on the ergometer were presented to each subject in random order and involved arm work (A) and leg work (L). Subjects remained seated at all times.Respiratory variables, including oxygen uptake (VO minute ventilation (VE) and respiratory exchange ratio (9) were measured continuously using an ergoanalyser. Expired air was directed through a vacuumed valve, which allows verbal communication with the subject during exercise testing. Exercise heart rates (HR) were measured using a cardio meter. Both Systolic and Diastolic Blood Pressures (SBP and DBP) by a sphygmomanometer within one minute of each exercise session. RPE was subjectively rated with the Borg 6-20 scale (Borg, 1970) in the last 15 seconds of each workload.The data was analyzed using Statistical Package of Social Sciences (SPSS).