composition, and flexibility. 6 Considerable effort has been focused on the association between physical fitness and cause-specific mortality, including CVD. 9,10 The muscular strength, endurance, and power in youth and adolescents have been shown to be inversely associated with clustered CVD risk. 2,11 In a cohort study to determine the interactive effects of fitness and body mass index (BMI), poor fitness and obesity were independently associated with a higher risk of heart failure at the age of 18 years. 12 From the Aerobics Center Longitudinal Study, a low fitness level in men with diabetes was associated with an increased risk of CVD mortality within the normal weight and overweight groups. 13 However, the roles of sex and obesity in the association between fitness and CVD risk have not been explored in great detail.However, studies focusing on the independent effect of muscular endurance on the CVD risk in generally healthy adults are limited. 14 The sit-up test can be used to estimate the extent of muscular endurance, but may not be the most optimal approach. 6,15 A higher push-up capacity is C ardiovascular disease (CVD) remains a leading cause of mortality in adults worldwide. 1 Assessment of future risk of CVD had been recognized a major issue for a long time. Numerous investigations have revealed that the risk of CVD is closely related to traditional risk factors, such as age, male sex, body weight, high blood pressure, hyperglycemia, hyperlipidemia, cigarette smoking, and a family history of premature atherosclerotic CVD. 2-4 Among the different methods established to predict the risk of CVD, the Framingham risk score of coronary artery disease (FRS-CAD) is a simple way to predict the future risk of coronary artery disease (CAD). 5 In recent studies, the future risk of CVD had also been shown to be inversely associated with cardiorespiratory fitness (CRF) and muscular strength, which are components of physical fitness. 6-8Physical fitness is one of the strongest predictors of individual future health status. 2 The health-related components of physical fitness include cardiorespiratory endurance, muscular endurance, muscular strength, body