Behavioral, psychological, and demographic predictors of physical fitness

Achieving higher levels of physical fitness has become a goal of many American both for personal reasons (e.g., improved health and well-being) and for organizational reasons (e.g., corporate cost-savings; operational effectiveness). Understanding the factors which relate to physical fitness could help people improve their fitness. This study examined 1,357 Navy men to estimate the associations among behavioral, psychological, and background factors and four components of physical fitness: (a) cardiorespiratory endurance (1.5-mile run), (b) muscular endurance (sit-ups), (c) flexibility (sit-and-reach test), and (d) body composition (estimated percent fat). Controlling for exercise activities, physical fitness was positively associated with "wellness" behaviors, believing in the importance of physical fitness, expecting to reach/maintain ideal weight, being athletic as a youth, and education; fitness was negatively associated with tobacco use, "preventive/avoidance" behaviors, age, and ever being overweight. Identifying and dealing constructively with such factors may help to structure better fitness programs tailored to the individual.