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J Sci Med Sport. 2014 Jul;17(4):376-80. doi: 10.1016/j.jsams.2013.07.014. Epub 2013 Aug 8.

Feasibility of using a compact elliptical device to increase energy expenditure during sedentary activities.

Author information

1
Department of Medicine, Pennsylvania State University College of Medicine, United States; Department of Public Health Sciences, Pennsylvania State University College of Medicine, United States. Electronic address: lrovniak@hmc.psu.edu.
2
Department of Medicine, Pennsylvania State University Medical Center, United States.
3
Department of Public Health Sciences, Pennsylvania State University College of Medicine, United States.
4
Department of Industrial and Manufacturing Engineering, Pennsylvania State University, United States.
5
Department of Medicine, Pennsylvania State University College of Medicine, United States; Department of Cellular & Molecular Physiology, Pennsylvania State University College of Medicine, United States.

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.

KEYWORDS:

Environment and public health; Environment design; Exercise; Obesity; Physical activity; Sedentary lifestyle

PMID:
24035273
PMCID:
PMC3926902
DOI:
10.1016/j.jsams.2013.07.014
[Indexed for MEDLINE]
Free PMC Article
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