| Summary: | This cross-sectional study evaluated the relationships between anthro-pometric and aerobic fitness (rate of perceived exertion [RPE] and pre-dicted maximal oxygen uptake [VO2max]) among 228 participants (age: 23.78 ± 4.42 years). RPE and predicted VO2max were determined during the cycle ergometer exercise test. Data were also obtained for height, weight, body mass index (BMI), hip and waist (WC) circumferences. Data analysis revealed VO2max is correlated with WC (r= -0.571), weight (r= -0.521), waist-to-height ratio (WHtR) (r= -0.516), waist-to-hip ratio (WHR) (r= -0.487), and BMI (r= -0.47) in men, while, in women with WC (r= -0.581), weight (r= -0.571), WHtR (r= -0.545), BMI (r= -0.545), WHR(r= -0.473), and height (r= -0.287) (all P< 0.05). Regression analysis showed WC was a significant predictor for VO2max in men and women (r 2= 32.6% vs. 33.7%). The receiver operating characteristic curve of WC showed 0.786 and 0.831 for men and women, respectively. WC or abdominal obesity is the strongest predictor for VO2max, which is an indicator of aerobic fitness in Malaysian adults. ©2021 Korean Society of Exercise Rehabilitation.This is an Open Access article distributed under the terms of the Creative Commons At-tribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited..
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