title: Measuring slope to improve energy expenditure estimates during field-based activities.
abstract: This technical note describes methods to improve activity energy expenditure estimates by using a multi-sensor board (MSB) to measure slope. Ten adults walked over a 4-km (2.5-mile) course wearing an MSB and mobile calorimeter. Energy expenditure was estimated using accelerometry alone (base) and 4 methods to measure slope. The barometer and global positioning system methods improved accuracy by 11% from the base (p < 0.05) to 86% overall. Measuring slope using the MSB improves energy expenditure estimates during field-based activities.
authors.affiliation: a Department of Epidemiology, Nutritional Sciences Program, University of Washington, Seattle, WA 98195, USA.
authors.forename: Glen E
authors.initials: GE
authors.lastname: Duncan
authors.forename: Jonathan
authors.initials: J
authors.lastname: Lester
authors.forename: Sean
authors.initials: S
authors.lastname: Migotsky
authors.forename: Lisa
authors.initials: L
authors.lastname: Higgins
authors.forename: Gaetano
authors.initials: G
authors.lastname: Borriello
mesh_terms: D061725:Accelerometry; D002151:Calorimetry; D004734:Energy Metabolism; D006801:Humans; D016138:Walking
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