Improving Energy Expenditure Estimates During Walking
Author Information
Author(s): Kuffel Erin E, Crouter Scott E, Haas Jere D, Frongillo Edward A, Bassett David R Jr
Primary Institution: University of Tennessee
Hypothesis
The refined Crouter 2-Regression Model (C2RM) would eliminate the overestimation of energy expenditure (EE) that occurs with the 2006 model during transitions from rest to walking and back to rest.
Conclusion
The refined C2RM provides a more accurate prediction of energy expenditure during walking compared to the 2006 C2RM.
Supporting Evidence
- The refined C2RM closely reflected measured energy expenditure values across all conditions.
- The 2006 C2RM significantly over-predicted energy expenditure during transitional minutes.
- The refined C2RM provided tighter prediction intervals around the mean energy expenditure.
Takeaway
This study tested a new way to measure how much energy you use when walking, and found that the new method is better at giving accurate results.
Methodology
Participants performed seated rest and walking while wearing accelerometers and a portable metabolic system to measure energy expenditure.
Potential Biases
The study used different models of accelerometers, which may influence results.
Limitations
The refined C2RM was only validated for walking bouts of 8 minutes duration.
Participant Demographics
30 participants (14 male, 16 female; mean age 28 ± 7.7 years; 69% Caucasian, 17% African American, 7% Hispanic, 7% Other).
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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