Measuring slope to improve energy expenditure estimates during field-based activities

Duncan, Glen E.; Lester, Jonathan; Migotsky, Sean; Higgins, Lisa; Borriello, Gaetano
March 2013
Applied Physiology, Nutrition & Metabolism;Mar2013, Vol. 38 Issue 3, p352
Academic Journal
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.


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