Energy Expenditure Measured by Indirect Calorimetry in Obesity

Rosado, Eliane Lopes; Kaippert, Vanessa Chaia; Brito, Roberta Santiago de

doi:10.5772/55605

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…Basal Metabolic Rate: was determined by breath-by-breath analysis using an open-circuit indirect calorimetry (MetaMax 3B, Cortex Biophysik, Leipzig, Germany) [24]. The participant rested still in a comfortable supine position in a quiet environment for 30 min.…”

Section: Methodsmentioning

confidence: 99%

“…This method was based on the systematic review by Ref. [24] which determined the optimal conditions for obtaining reliable measures of BMR by indirect calorimetry. Due to its high prevalence in human studies, Weir's equation with dismissed protein oxidation was used to calculate BMR [21].…”

Section: Methodsmentioning

confidence: 99%

“…Levene's and Mauchley's test were respectively used to check for homogeneity of variance and sphericity. When the latter was violated (p ≥ 0.05) the Greenhouse Geiser correction was used [24]. A two-way (Time x Sex) mixed model ANOVA was used to assess the effects of time, sex and their interaction on all variables during the control period (except PAEE assessed by ActiGraph which only included 1 week of control) as well as across all periods (i.e.…”

Section: Statistical Analysesmentioning

confidence: 99%

See 2 more Smart Citations

The acute effects of diet-induced energy restriction on physical activity energy expenditure and basal metabolic rate in men and women with overweight and obesity

Arcon

Malone

Barton

et al. 2023

Human Nutrition & Metabolism

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Statistical Analysesmentioning

confidence: 99%

See 1 more Smart Citation

The acute effects of diet-induced energy restriction on physical activity energy expenditure and basal metabolic rate in men and women with overweight and obesity

Arcon

Malone

Barton

et al. 2023

Human Nutrition & Metabolism

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Accelerometer-based methods for energy expenditure using the smartphone

Carneiro

Silva

Aguiar

et al. 2015

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings

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Quantifying the energy expended during physical activity is an important metric to evaluate the quality and progress of individual training. There are several methods to estimate the energy expenditure using accelerometers, the most common are based on calculating counts per minute from the accelerometer signal to determinate the activity intensity in terms of metabolic equivalents (METs). This paper compares three methods to estimate the energy expenditure, the first has been proposed in a previous study and the last two are based on linear regressions derived from the data collected, one using speed, and the other using the feature root mean square (fRMS) of the magnitude of the accelerometer signal. These models were compared with indirect calorimetry outputs of energy expenditure during an incremental speed treadmill protocol. No statistically significant differences (p>0.05) were found between the indirect calorimetry and the model derived using the RMS feature, obtaining a normalized error of 20% for the METs estimation. In conclusion, this was found to be the most suitable method to estimate the energy expenditure from accelerometer data collected using a smartphone placed in the belt

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The highly efficient powerhouse in the Wistar audiogenic rat, an epileptic rat strain

Dechandt

Vicentini

Lanfredi

et al. 2019

American Journal of Physiology-Regulatory, Integrative and Comp

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The Wistar audiogenic rat (WAR) is an animal model of tonic-clonic epileptic seizures, developed after genetic selection by sister × brother inbreeding of Wistar rats susceptible to sound stimuli. Although metabolic changes have been described in this strain, nothing is known about its mitochondrial metabolism. Here, we addressed mitochondrial aspects of oxidative phosphorylation, oxidative stress, biogenesis, and dynamics in liver, skeletal muscle, and heart of male WARs and correlating them with physiological aspects of body metabolism. The results showed higher mitochondrial content, respiration rates in phosphorylation and noncoupled states, and H2O2 production in WARs. Liver presented higher content of peroxisome proliferator-activated receptor-γ coactivator 1α (PGC1α) and mammalian target of rapamycin, proteins related to mitochondrial biogenesis. In agreement, isolated liver mitochondria from WARs showed higher respiration rates in phosphorylation state and ADP-to-O ratio, as well as higher content of proteins related to electron transport chain ATP synthase, TCA cycle, and mitochondrial fusion and fission compared with their Wistar counterparts. Mitochondria with higher area and perimeter and more variable shapes were found in liver and soleus from WARs in addition to lower reduced-to-oxidized glutathione ratio. In vivo, WARs demonstrated lower body mass and energy expenditure but higher food and water intake and amino acid oxidation. When exposed to a running test, WARs reached higher speed and resisted for a longer time and distance than their Wistar controls. In conclusion, the WAR strain has mitochondrial changes in liver, skeletal muscle, and heart that improve its mitochondrial capacity of ATP production, making it an excellent rat model to study PGC1α overexpression and mitochondrial function in different physiological conditions or facing pathological challenges.

show abstract

Energy Expenditure Measured by Indirect Calorimetry in Obesity

Cited by 4 publications

References 43 publications

The acute effects of diet-induced energy restriction on physical activity energy expenditure and basal metabolic rate in men and women with overweight and obesity

The acute effects of diet-induced energy restriction on physical activity energy expenditure and basal metabolic rate in men and women with overweight and obesity

Accelerometer-based methods for energy expenditure using the smartphone

The highly efficient powerhouse in the Wistar audiogenic rat, an epileptic rat strain

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