A simple medical device development according to normative values of calf circumference across ages: results from the Italian Longevity Check-up 7+ (Lookup 7+) project.

Our study established age- and gender-specific centile reference values for calf circumference. The calf circumference tape can be used to easily interpret the assessment in every-day practice for the early detection of individuals with or at risk of sarcopenia and malnutrition.