Energy expenditure measurement devices

Energy expenditure measurement devices assess how much energy your body uses during activities or at rest. These devices include indirect calorimeters, which estimate energy use by measuring oxygen intake and carbon dioxide output—similar to how a doctor might check your breathing—often during lab tests. Wearable devices like accelerometers or fitness trackers estimate energy expenditure by tracking movement and heart rate. While lab devices provide precise data, wearable tools offer convenient estimates for everyday use. Both help understand calorie use, aiding with weight management and fitness planning.