Tags

Type your tag names separated by a space and hit enter

The use of uniaxial accelerometry for the assessment of physical-activity-related energy expenditure: a validation study against whole-body indirect calorimetry.
Br J Nutr 2004; 91(2):235-43BJ

Abstract

Assessing the total energy expenditure (TEE) and the levels of physical activity in free-living conditions with non-invasive techniques remains a challenge. The purpose of the present study was to investigate the accuracy of a new uniaxial accelerometer for assessing TEE and physical-activity-related energy expenditure (PAEE) over a 24 h period in a respiratory chamber, and to establish activity levels based on the accelerometry ranges corresponding to the operationally defined metabolic equivalent (MET) categories. In study 1, measurement of the 24 h energy expenditure of seventy-nine Japanese subjects (40 (SD 12) years old) was performed in a large respiratory chamber. During the measurements, the subjects wore a uniaxial accelerometer (Lifecorder; Suzuken Co. Ltd, Nagoya, Japan) on their belt. Two moderate walking exercises of 30 min each were performed on a horizontal treadmill. In study 2, ten male subjects walked at six different speeds and ran at three different speeds on a treadmill for 4 min, with the same accelerometer. O2 consumption was measured during the last minute of each stage and was expressed in MET. The measured TEE was 8447 (SD 1337) kJ/d. The accelerometer significantly underestimated TEE and PAEE (91.9 (SD 5.4) and 92.7 (SD 17.8) % chamber value respectively); however, there was a significant correlation between the two values (r 0.928 and 0.564 respectively; P<0.001). There was a strong correlation between the activity levels and the measured MET while walking (r(2) 0.93; P<0.001). Although TEE and PAEE were systematically underestimated during the 24 h period, the accelerometer assessed energy expenditure well during both the exercise period and the non-structured activities. Individual calibration factors may help to improve the accuracy of TEE estimation, but the average calibration factor for the group is probably sufficient for epidemiological research. This method is also important for assessing the diurnal profile of physical activity.

Authors+Show Affiliations

Laboratory of Physiology, Faculty of Medicine, University of Lausanne, Lausanne, Switzerland.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Validation Studies

Language

eng

PubMed ID

14756909

Citation

Kumahara, Hideaki, et al. "The Use of Uniaxial Accelerometry for the Assessment of Physical-activity-related Energy Expenditure: a Validation Study Against Whole-body Indirect Calorimetry." The British Journal of Nutrition, vol. 91, no. 2, 2004, pp. 235-43.
Kumahara H, Schutz Y, Ayabe M, et al. The use of uniaxial accelerometry for the assessment of physical-activity-related energy expenditure: a validation study against whole-body indirect calorimetry. Br J Nutr. 2004;91(2):235-43.
Kumahara, H., Schutz, Y., Ayabe, M., Yoshioka, M., Yoshitake, Y., Shindo, M., ... Tanaka, H. (2004). The use of uniaxial accelerometry for the assessment of physical-activity-related energy expenditure: a validation study against whole-body indirect calorimetry. The British Journal of Nutrition, 91(2), pp. 235-43.
Kumahara H, et al. The Use of Uniaxial Accelerometry for the Assessment of Physical-activity-related Energy Expenditure: a Validation Study Against Whole-body Indirect Calorimetry. Br J Nutr. 2004;91(2):235-43. PubMed PMID: 14756909.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The use of uniaxial accelerometry for the assessment of physical-activity-related energy expenditure: a validation study against whole-body indirect calorimetry. AU - Kumahara,Hideaki, AU - Schutz,Yves, AU - Ayabe,Makoto, AU - Yoshioka,Mayumi, AU - Yoshitake,Yutaka, AU - Shindo,Munehiro, AU - Ishii,Kojiro, AU - Tanaka,Hiroaki, PY - 2004/2/6/pubmed PY - 2004/3/17/medline PY - 2004/2/6/entrez SP - 235 EP - 43 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 91 IS - 2 N2 - Assessing the total energy expenditure (TEE) and the levels of physical activity in free-living conditions with non-invasive techniques remains a challenge. The purpose of the present study was to investigate the accuracy of a new uniaxial accelerometer for assessing TEE and physical-activity-related energy expenditure (PAEE) over a 24 h period in a respiratory chamber, and to establish activity levels based on the accelerometry ranges corresponding to the operationally defined metabolic equivalent (MET) categories. In study 1, measurement of the 24 h energy expenditure of seventy-nine Japanese subjects (40 (SD 12) years old) was performed in a large respiratory chamber. During the measurements, the subjects wore a uniaxial accelerometer (Lifecorder; Suzuken Co. Ltd, Nagoya, Japan) on their belt. Two moderate walking exercises of 30 min each were performed on a horizontal treadmill. In study 2, ten male subjects walked at six different speeds and ran at three different speeds on a treadmill for 4 min, with the same accelerometer. O2 consumption was measured during the last minute of each stage and was expressed in MET. The measured TEE was 8447 (SD 1337) kJ/d. The accelerometer significantly underestimated TEE and PAEE (91.9 (SD 5.4) and 92.7 (SD 17.8) % chamber value respectively); however, there was a significant correlation between the two values (r 0.928 and 0.564 respectively; P<0.001). There was a strong correlation between the activity levels and the measured MET while walking (r(2) 0.93; P<0.001). Although TEE and PAEE were systematically underestimated during the 24 h period, the accelerometer assessed energy expenditure well during both the exercise period and the non-structured activities. Individual calibration factors may help to improve the accuracy of TEE estimation, but the average calibration factor for the group is probably sufficient for epidemiological research. This method is also important for assessing the diurnal profile of physical activity. SN - 0007-1145 UR - https://www.unboundmedicine.com/medline/citation/14756909/The_use_of_uniaxial_accelerometry_for_the_assessment_of_physical_activity_related_energy_expenditure:_a_validation_study_against_whole_body_indirect_calorimetry_ L2 - https://www.cambridge.org/core/product/identifier/S0007114504000327/type/journal_article DB - PRIME DP - Unbound Medicine ER -