Abstract : Cardiorespiratory endurance is an important aspect of health affecting the physical andmental activities of an individual. Little is known about the level of physical fitness among young adults inthe UAE. The present study was undertaken to assess Cardiorespiratory Endurance in Terms of PFI andVO2max among Gulf Medical University Students, Correlate PFI with Vo2max, and Compare thecardiorespiratory endurances between male and female students and Arabs and non-Arabs. Thisexperimental study was done on 78 healthy male and female students in the age group of 17 to 25 yearsfrom different nationalities and ethnicity. The cardiorespiratory endurance was assessed using HST. BMI,PFI (long form) and Vo2max (indirectly) were calculated and the Participants were categorized according toBMI, PFI, and Vo2max reference ranges. The data were presented as percentages and mean + SD. Studentpaired t-test was used to determine the difference in PFI and VO2max between Males and Females andArabs and non-Arabs. Pearson correlation coefficient was used to determine the correlation between PFI andVO2max at p < 0.05. Over 60% of Arabs (45.7+5.07) and non-Arabs (46.3+4.42) and females (46.0+3.81)and males (45.6+6.07) were having poor PF. As for VO2max, most students of both genders (males; (55%,42.0+4.26), females; (61%, 36.2+3.00)) and ethnicities (Arabs; (46%, 38.5+4.62), Non-Arabs; (79%,39.6+4.74)) found having average VO2max. Students were predominantly in the poor PF category and havean average VO2max indicating poor to average Cardiorespiratory endurance. A significant positivecorrelation was found between PFI and VO2max