This study explored the relationship between visceral adipose tissue (VAT) and daily physical activity (PA). Excessive VAT is closely associated with type 2 diabetes and insulin resistance. Using data from the National Health and Nutrition Examination Survey (NHANES) from 2011 to 2014, the study analyzed 7-day accelerometer data from 4,883 adults (2,456 men and 2,427 women) aged 20 to 60 years. Two approaches were used to estimate VAT from PA. The first used engineered features based on gait and sleep movements and applied ridge regression. The second applied a deep neural network (DNN) to 24-h continuous accelerometer data to estimate VAT. Both methods achieved the most accurate estimates when covariate information on demographics and anthropometric measurements was added. Combining the two approaches yielded the best performance, with a correlation between VAT estimates of r=0.86.