Dietary Reference Intakes for Energy (2023) / Chapter Skim
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Pages 235-266
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Syntax Results 1 exp "energy cost"/ or exp energy metabolism/ 296447 or exp basal metabolic rate/ or (energy-cost* or energy-expenditure*
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Syntax Results 1 exp energy metabolism/ or exp energy expenditure/ 264,392 or exp energy balance/ or exp basal metabolic rate/ or exp resting metabolic rate/ or exp resting energy expenditure/ or (energy-expenditure* or caloric expenditure*
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.ti,ab,kw. 139,671 3 1 and 2 4,750 4 limit 3 to (english language and yr="2012 -Current" 16 and "systematic review")
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: Search No. Syntax Results 1 exp energy metabolism/ or exp energy expenditure/ 249,873 or exp energy balance/ or exp basal metabolic rate/ or exp resting metabolic rate/ or exp resting energy expenditure/ or (energy-expenditure*
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.ti,ab. 3 1 and 2 1,490 4 limit 3 to (english language and yr="2012 -Current" 8 and "systematic review")
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or basal metabolism or body composition or energy expenditure or energy balance or metabolic rate Final results: 465 papers
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? Date: February 23, 2022 Search Parameters: Date: 2000–Present Document Type: Systematic reviews Language: English Databases: Embase (Ovid)
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, Cochrane Database of Systematic Reviews (Ovid) Embase (Ovid)
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.ti,ab. 4 1 and 2 and 3 595 5 limit 4 to (english language and yr="2012 -Current" 14 and "systematic review")
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What is the relationship between different measurements of physical activity and energy expenditure? Date: March 15, 2022 Search Parameters: Date: 2000–Present Document Type: Systematic reviews Language: English Database: Embase (Ovid)
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.ti,ab. 7 3 and 6 11,598 8 Limit 7 to (english language and yr="2000-Current" 135 and "systematic review" Medline (Ovid)
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.ti,ab. 7 3 and 6 9,471 8 Limit 7 to (english language and yr="2000 -Current" 64 and "systematic review")
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Syntax Results 1 exp body weight loss/ or exp body weight 310,134 maintenance/ or exp body weight gain/ or exp body weight change/ or exp weight cycling/ or exp body weight fluctuation/ or (body-weight-loss or body-weight-decrease or body-weight-reduction or weight-decrease or weight-los* or weight-reduc*
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From page 248... ...
Syntax Results 1 exp Body Weight Changes/ or exp weight cycling/ 180,453 or exp weight gain/ or exp weight loss/ or (body weight-change* or change-body-weight or changes body-weight or weight-change-body or weight changes-body or weight-cycling or cycling-weight or gain-weight or gains-weight or weight-gain*
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.ti,ab. 3 1 and 2 42,764 4 limit 3 to (english language and yr="2017 -Current" 501 and "systematic review")
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Search Parameters: Date: 2000–Present Document Type: Systematic reviews Language: English Databases: Embase (Ovid) 1974 to 2022 February 22; Cochrane Database of Systematic Reviews (Ovid)
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Search Parameters: Date: 2000–Present Document Type: Systematic reviews Language: English Database: Embase (Ovid) , Cochrane Database of Systematic Reviews (Ovid)
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From page 252... ...
.ti,ab. 3 exp body weight loss/ or exp body weight 306,354 maintenance/ or exp body weight gain/ or exp caloric restriction/ or (body-weight-loss or body weight-decrease or body-weight-reduction or weight-decrease or weight-los*
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APPENDIX D 253 Cochrane Database of Systematic Reviews (Ovid) : Search No.
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: overweight, obese, exposures and underweight, normal weight comparators Study designs (of Include: primary studies • Longitudinal studies included within the systematic reviews) Exclude: • Cross-sectional studies Systematic reviews must include a meta-analysis Timing No minimum "treatment" or exposure duration required No minimum follow-up duration (to when outcome is measured)
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systematic reviews) • Nonrandomized comparative studies, multivariable adjusted • Association analyses (e.g., regression models, predictors, risk factors)
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Key Question: What is the association of body composition with metabolic efficiency (energy usage/expenditure)
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From page 258... ...
Setting • Restrict to high- and upper middle-income countries • Restrict to studies published 2000 or later Outcomes Usage/expenditure must be measured (e.g., DLW, direct and indirect calorimetry) • 24-hour energy expenditure • Resting or basal metabolic rate • Energy cost of physical activity • Thermic effect of food • Metabolic adaptation (mitochondria dynamics)
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• Nonrandomized comparative studies, multivariable adjusted • Longitudinal studies • Systematic reviews Exclude: • Association analyses (e.g., regression models, predictors, risk factors) , multivariable adjusted • Association analyses (e.g., models, predictors, risk factors)
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From page 260... ...
Population • Human only • Subgroups of interest º Age/life stage º Sex Interventions/ Race or ethnic group exposures and comparators Study designs (of • Randomized clinical trials primary studies • Nonrandomized comparative studies, unadjusted included within the • Single group (noncomparative between interventions/ systematic reviews exposures) and primary studies)
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? Population • Human only • Allow focus on health conditions: obesity or type 2 diabetes º Exclude focus on other health conditions • Allow focus on other population groups: º High physical activity º Diet (e.g., vegetarian, vegan)
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• 24-hour energy expenditure • Resting or basal metabolic rate • Energy cost of physical activity • Thermic effect of food • Metabolic adaptation (mitochondria dynamics) NOTE: DLW = doubly labeled water.
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From page 263... ...
Population • Human only • Allow focus on health conditions: obesity, type 2 diabetes º Exclude focus on other health conditions • Allow focus on other population groups: º High physical activity º Diet (e.g., vegetarian, vegan) • Subgroups of interest º Age/life stage º Sex º Race/ethnicity Interventions/ Different age or age categories exposures and comparators Study designs (of Include: primary studies • Randomized clinical trials included within the • Nonrandomized comparative studies, multivariable systematic reviews)
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From page 264... ...
º Sedentary behaviors º Steps º Total activity counts º Volume º Activity type º Behavior • Energy expenditure º Total energy expenditure º Net energy expenditure º Activity energy expenditure º Energy cost of physical activity • Type of measurement º Doubly labeled water º Accelerometer º Wearable sensors º Questionnaire º Objective º Subjective º Indirect calorimetry º Room calorimeter º Free living • Obesity risk º Body weight º BMI º Body fat % º Waist circumference º Visceral fat NOTE: BMI = body mass index; kcals = kilocalories; METs = metabolic equivalent of task.
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From page 265... ...
• Subgroups of interest º Age/life stage º Sex º Race/ethnicity Interventions/ Physical activity measurement method exposures and comparators Study designs (of Include: primary studies • Randomized clinical trials included within the • Nonrandomized comparative studies, multivariable systematic reviews) adjusted • Association analyses (e.g., regression models, predictors, risk factors)
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From page 266... ...
systematic reviews) • Randomized clinical trials of weight loss interventions Exclude: • Cross-sectional studies Timing • Cohort studies: at least 12 months of follow-up • Randomized clinical trials: at least 3 months of intervention Setting • Restrict to high- and upper middle-income countries • Restrict to systematic reviews published 2017 or later
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