Reliability and Validity of a Multi-Sensor Armband in Estimating Resting and Exercise Energy Expenditure

This study examined the reliability and validity of the SenseWear Armband (SWA, BodyMedia, Inc.) during rest and exercise compared to indirect calorimetry (IC). Energy expenditure (EE) was assessed with SWA and IC in 13 males during two resting and one cycle ergometry (40 min at 60% VO_2peak) sessions. In a second experiment, 20 adults walked on a treadmill for 30 min at 3 intensities while IC and SWA measured EE. At rest, no significant differences were found between EE measurements from the SWA (1.3 ± 0.1 kcal/min) and IC (1.3 ± 0.1 kcal/min), and the methods were significantly correlated (r = 0.76). The SWA EE estimation was reliable when comparing the two resting visits (r = 0.93). For the ergometer protocol, no significant differences were found between the SWA and IC measurements of EE early, mid, or late in exercise or for the total bout, although the measurements were not correlated (r = 0.03-0.12). The SWA EE estimate of walking increased with treadmill speed but not with inclination. The SWA significantly overestimated the EE of walking with no grade (27.4% for 3mph; 12.6% for 4mph) and significantly underestimated EE on the 5% grade (21.9%) (p<0.02). The SWA estimation of EE correlated with IC (r = 0.47-0.69). The SWA provided valid and reliable estimates of EE at rest. The SWA provided similar mean estimates of EE as IC on the ergometer, however the individual error was large. The SWA overestimated the EE of flat walking and underestimated inclined walking EE.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Human Nutrition, Foods, and Exercise

Department dc:contributor.department

Human Nutrition, Foods, and Exercise

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2003

Author dc:creator

• Fruin, Margaret Louise

Chair dc:contributor.committeechair

• Rankin, Janet L. Walberg

Committee members dc:contributor.committeemember

• Wojcik, Janet R.
• Herbert, William G.

• physical activity
• SenseWear Armband
• activity monitoring
• caloric expenditure
• motion sensors

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

etd-06172003-123416

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/33616