As a prospective, observational cohort study, this study assesses the relationship between levels of cardiorespiratory fitness (CRF) and rates of acquiring and surviving a cancer diagnosis over Medicare age (≥65 years old). The sample (n=13,949) included men who participated in the Cooper Center Longitudinal Study and had Medicare part A and B claims of prostate, lung or colorectal cancer between 1999 and 2009. Anthropometric measurements were taken before the protocol, including height, weight, body mass index (BMI), cholesterol, and blood glucose levels. CRF was assessed using a modified-Balke protocol and participants were placed into low (lowest 20%), moderate (middle 40%), or high (highest 40%) categories. The National Death Index was
