A stepwise validation of a wearable system for estimating energy expenditure infield-based research

Rumo, Martin; Amft, Oliver; Tröster, Gerhard; Mäder, Urs (2011). A stepwise validation of a wearable system for estimating energy expenditure infield-based research Physiological Measurement, 32(12), pp. 1983-2001. IOP Publishing 10.1088/0967-3334/32/12/008

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Regular physical activity (PA) is an important contributor to a healthy lifestyle. Currently, standard sensor-based methods to assess PA in field-based research rely on a single accelerometer mounted near the body's center of mass. This paper introduces a wearable system that estimates energy expenditure (EE) based on seven recognized activity types. The system was developed with data from 32 healthy subjects and consists of a chest mounted heart rate belt and two accelerometers attached to a thigh and dominant upper arm. The system was validated with 12 other subjects under restricted lab conditions and simulated free-living conditions against indirect calorimetry, as well as in subjects' habitual environments for 2 weeks against the doubly labeled water method. Our stepwise validation methodology gradually trades reference information from the lab against realistic data from the field. The average accuracy for EE estimation was 88% for restricted lab conditions, 55% for simulated free-living conditions and 87% and 91% for the estimation of average daily EE over the period of 1 and 2 weeks.

Item Type:

Journal Article (Original Article)

Division/Institute:

Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport
Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sporttechnologie

Name:

Rumo, Martin;
Amft, Oliver;
Tröster, Gerhard and
Mäder, Urs

ISSN:

0967-3334 (Print) 1361-6579 (Online)

Publisher:

IOP Publishing

Language:

English

Submitter:

Admin import user

Date Deposited:

04 Feb 2021 12:41

Last Modified:

22 Sep 2021 02:17

Publisher DOI:

10.1088/0967-3334/32/12/008

PubMed ID:

22056999

Uncontrolled Keywords:

Acceleration Adult Biomedical research Energy metabolism physiology Female Humans Male Middle aged Models biological Motor activity physiology Physiology instrumentation Physiology methods Regression analysis Reproducibility of results Time factors Young adult

URI:

https://arbor.bfh.ch/id/eprint/11042

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