The Validity of Energy Expenditure Measured by an Accelerometer of Community-dwelling Elderly during Walking Activity

Abstract

[Purpose] The purpose of study was to consider the validity of energy expenditure measured by an accelerometer of community-dwelling elderly. [Subjects and Methods] The subjects were 33 community-dwelling older adults. We measured oxygen uptake using a portable expired gas analyzer and energy expenditure using a portable accelerometer during walking. The Pearson correlation test was used to examine the relationships between oxygen uptake and energy expenditure. [Results] Energy expenditure measured by the portable accelerometer moderately correlated with oxygen uptake measured by the portable expired gas analyzer. [Conclusion] This result suggests that energy expenditure measured by a portable accelerometer is a useful method for evaluating the physical activity of community-dwelling elderly.