Feasibility of Using a Compact Elliptical Device to Increase Energy Expenditure During Sedentary Activities

Overview

Journal J Sci Med Sport

Specialty Orthopedics

Date 2013 Sep 17

PMID 24035273

Citations 9

Authors

Liza S Rovniak

LeAnn Denlinger

Ellen Duveneck

Christopher N Sciamanna

Lan Kong

Andris Freivalds

Chester A Ray

Affiliations

Soon will be listed here.

Abstract

Objectives: This study aimed to evaluate the feasibility of using a compact elliptical device to increase energy expenditure during sedentary activities. A secondary aim was to evaluate if two accelerometers attached to the elliptical device could provide reliable and valid assessments of participants' frequency and duration of elliptical device use.

Design: Physically inactive adults (n=32, age range=25-65) were recruited through local advertisements and selected using stratified random sampling based on sex, body mass index (BMI), and age.

Methods: Indirect calorimetry was used to assess participants' energy expenditure while seated and while using the elliptical device at a self-selected intensity level. Participants also self-reported their interest in using the elliptical device during sedentary activities. Two Actigraph GT3X accelerometers were attached to the elliptical device to record time-use patterns.

Results: Participants expended a median of 179.1 kilocalories per hour while using the elliptical device (range=108.2-269.0), or a median of 87.9 more kilocalories (range=19.7-178.6) than they would expend per hour of sedentary sitting. Participants reported high interest in using the elliptical device during TV watching and computer work, but relatively low interest in using the device during office meetings. Women reported greater interest in using the elliptical device than men. The two accelerometers recorded identical time-use patterns on the elliptical device and demonstrated concurrent validity with time-stamped computer records.

Conclusions: Compact elliptical devices could increase energy expenditure during sedentary activities, and may provide proximal environmental cues for increasing energy expenditure across multiple life domains.

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