title: Determining energy costs of agricultural activities by respirometer and energy balance techniques.
mesh_terms: D000328:Adult; D001481:Basal Metabolism; D001823:Body Composition; D003612:Dairying; D006804:Ergonomics; D006166:Guatemala; D006801:Humans; D008297:Male; D008660:Metabolism; D008875:Middle Aged; D009749:Nutrition Surveys; D009790:Occupations; D010101:Oxygen Consumption; D005082:Physical Exertion; D012119:Respiration; D012146:Rest; D013997:Time Factors