Crawford, Andrea Kim
(2004)
Validation of the SenseWear Pro 2 Armband Calorimeter to Assess Energy Expenditure of Adolescents during Various Modes of Activity.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
VALIDATION OF THE SENSEWEAR PRO2 ARMBAND CALORIMETER TO ASSESS ENERGY EXPENDITURE OF ADOLESCENTS DURING VARIOUS MODES OF ACTIVITYKim Crawford, PhDUniversity of Pittsburgh, 2004The primary purpose of this investigation was to examine the validity of the SenseWear® Pro 2 Armband (SAB) to assess energy expenditure during various modes of physical activity in adolescents. It was hypothesized that measures of energy expenditure during treadmill and cycle ergometer exercise would not differ between the SAB and the criterion respiratory metabolic system (RMS) when examined for female and male subjects. Twenty-four healthy adolescents completed both the cycle ergometer and treadmill exercise protocols. The primary findings of this investigation were the SAB significantly underestimated energy expenditure during cycle ergometer exercise at the low (1.53 + 0.60 kcal.min-1; P<0.001) and moderate (2.48 + 0.95 kcal.min-1; P<0.001) intensities and for total energy expenditure (19.11 + 7.43 kcal; P<0.001) in both the female and male subjects. In the treadmill exercise, there were no significant differences between measures of energy expenditure during treadmill walking at 3.0 mph, 0% incline in female and male subjects. However, the SAB significantly underestimated measures of energy expenditure at 4.0 mph, 0% grade (0.86 + 0.84 kcal.min-1; P<0.001); 4.0 mph, 5% grade (2.13 + 1.40 kcal.min-1; P<0.001); 4.5 mph, 5% grade (2.97 + 1.56 kcal.min-1; P<0.001) and for total energy expenditure (23.66 + 14.92 kcal; P<0.001) during treadmill exercise in female and male subjects.Possible mechanisms underlying the underestimation of energy expenditure by the SAB are complex but may include: the use of generalized exercise algorithms to predict all types of physical activity; possible disproportionate reliance on the two-axis accelerometer during non-weight bearing and graded exercises; the delay in body heat transfer to the skin; and the inability to account for variability in walking gait, lean body mass and fat mass. All of these factors impact on the accuracy of the SAB to accurately estimate energy expenditure. This is the first study to examine the accuracy of the SAB in adolescent subjects and is an important first step in validating SAB technology in adolescents.
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
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| ETD Committee: |
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| Date: |
14 September 2004 |
| Date Type: |
Completion |
| Defense Date: |
26 July 2004 |
| Approval Date: |
14 September 2004 |
| Submission Date: |
29 July 2004 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
School of Education > Health, Physical, Recreational Education |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
; physical activity; physical activity monitors |
| Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-07292004-142308/, etd-07292004-142308 |
| Date Deposited: |
10 Nov 2011 19:54 |
| Last Modified: |
15 Nov 2016 13:47 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/8696 |
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