Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study
ABSTRACT Objective: The present study investigated the time needed to achieve a steady state for an accurate assessment of resting energy expenditure (REE) in adolescents with healthy weight and obesity. Materials and methods: Thirty adolescents aged 12-17 years were assigned to a group with healt...
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| Format: | Article |
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Brazilian Society of Endocrinology and Metabolism
2022-04-01
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| Series: | Archives of Endocrinology and Metabolism |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2359-39972022005003205&tlng=en |
| _version_ | 1811311490409431040 |
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| author | Isabela F. Soares Fabrício Vasconcellos Felipe A. Cunha |
| author_facet | Isabela F. Soares Fabrício Vasconcellos Felipe A. Cunha |
| author_sort | Isabela F. Soares |
| collection | DOAJ |
| description | ABSTRACT Objective: The present study investigated the time needed to achieve a steady state for an accurate assessment of resting energy expenditure (REE) in adolescents with healthy weight and obesity. Materials and methods: Thirty adolescents aged 12-17 years were assigned to a group with healthy weight (GHW; n = 12, body mass index [BMI] 22.5 ± 3.6 kg/m2) and another group with obesity (GO; n = 18, BMI 34.1 ± 5.2 kg/m2). Participants underwent test-retest reliability of REE assessment as follows: a) 24 h of abstention from physical exercise, soft drinks, or caffeine; b) fasting for ~12 h; c) acclimation period of 10 min; d) 30-min assessment in a supine position. Results and discussion: A significant change occurred during the 30 min in REE. Significant differences existed between consecutive means until the 20th and 25th min for the GHW and GO, respectively. Although significant differences between trials 1 and 2 were detected during the first 5-10 min of assessment, the REE for each 5-min time point exhibited high test-retest reliability across trials in both groups (intraclass correlation coefficients range 0.79-0.99). Conclusion: The following recommendations are provided to promote accurate assessment of REE among adolescents: a) initiate the REE assessment with 10 min of acclimation to decrease restlessness; b) determine REE for a minimum of 20 min if healthy weight and 25 min if obesity; c) determine REE for a further 5 min, with the average of this last 5 min of REE data being regarded as the REE. |
| first_indexed | 2024-04-13T10:19:47Z |
| format | Article |
| id | doaj.art-913c01dc4c0e429b9c8554a24e175ff8 |
| institution | Directory Open Access Journal |
| issn | 2359-4292 |
| language | English |
| last_indexed | 2024-04-13T10:19:47Z |
| publishDate | 2022-04-01 |
| publisher | Brazilian Society of Endocrinology and Metabolism |
| record_format | Article |
| series | Archives of Endocrinology and Metabolism |
| spelling | doaj.art-913c01dc4c0e429b9c8554a24e175ff82022-12-22T02:50:33ZengBrazilian Society of Endocrinology and MetabolismArchives of Endocrinology and Metabolism2359-42922022-04-0110.20945/2359-3997000000450Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional studyIsabela F. Soareshttps://orcid.org/0000-0002-6544-3772Fabrício Vasconcelloshttps://orcid.org/0000-0002-4522-4425Felipe A. Cunhahttps://orcid.org/0000-0002-8912-5656ABSTRACT Objective: The present study investigated the time needed to achieve a steady state for an accurate assessment of resting energy expenditure (REE) in adolescents with healthy weight and obesity. Materials and methods: Thirty adolescents aged 12-17 years were assigned to a group with healthy weight (GHW; n = 12, body mass index [BMI] 22.5 ± 3.6 kg/m2) and another group with obesity (GO; n = 18, BMI 34.1 ± 5.2 kg/m2). Participants underwent test-retest reliability of REE assessment as follows: a) 24 h of abstention from physical exercise, soft drinks, or caffeine; b) fasting for ~12 h; c) acclimation period of 10 min; d) 30-min assessment in a supine position. Results and discussion: A significant change occurred during the 30 min in REE. Significant differences existed between consecutive means until the 20th and 25th min for the GHW and GO, respectively. Although significant differences between trials 1 and 2 were detected during the first 5-10 min of assessment, the REE for each 5-min time point exhibited high test-retest reliability across trials in both groups (intraclass correlation coefficients range 0.79-0.99). Conclusion: The following recommendations are provided to promote accurate assessment of REE among adolescents: a) initiate the REE assessment with 10 min of acclimation to decrease restlessness; b) determine REE for a minimum of 20 min if healthy weight and 25 min if obesity; c) determine REE for a further 5 min, with the average of this last 5 min of REE data being regarded as the REE.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2359-39972022005003205&tlng=enResting metabolic ratekilocaloriesoxygen uptakereliabilityCPX Ultima CardiO2indirect calorimetry |
| spellingShingle | Isabela F. Soares Fabrício Vasconcellos Felipe A. Cunha Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study Archives of Endocrinology and Metabolism Resting metabolic rate kilocalories oxygen uptake reliability CPX Ultima CardiO2 indirect calorimetry |
| title | Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study |
| title_full | Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study |
| title_fullStr | Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study |
| title_full_unstemmed | Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study |
| title_short | Time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity: A cross-sectional study |
| title_sort | time to achieve steady state for an accurate assessment of resting energy expenditure in adolescents with healthy weight and obesity a cross sectional study |
| topic | Resting metabolic rate kilocalories oxygen uptake reliability CPX Ultima CardiO2 indirect calorimetry |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2359-39972022005003205&tlng=en |
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