Evidence map›Paper›PMID 33247306›Full record

ArticleThe American journal of clinical nutrition2021

A high-protein total diet replacement increases energy expenditure and leads to negative fat balance in healthy, normal-weight adults.

Camila L P Oliveira, Normand G Boulé, Arya M Sharma, Sarah A Elliott, Mario Siervo, Sunita Ghosh, Aloys Berg, Carla M Prado

Erratum issued 2 registry-linked trialsOpen access · hybridAbstract read
In one paragraph

Article in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 2 registered trials, which are not on this map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02811276 nacompletednot on this map

A Randomized, Controlled, Cross-over Trial Investigating the Impact of a High Protein Diet on Substrate Oxidation and Energy Metabolism in Healthy Women

TypeinterventionalSponsorUniversity of AlbertaRan2016 to 2018Enrolled20ConditionsDietary ModificationArmsDiet
NCT03565510 nacompletednot on this map

A Randomized, Controlled, Cross-over Trial Investigating the Impact of a High-protein Diet on Energy Metabolism in Healthy Men

TypeinterventionalSponsorUniversity of AlbertaRan2018 to 2019Enrolled27ConditionsDietary ModificationArmsHigh-Protein Diet
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 3 countries.

Camila L P OliveiraHuman Nutrition Research Unit, Department of Agricultural, Food, & Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Normand G BouléAlberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada.
Arya M SharmaDivision of Endocrinology & Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
Sarah A ElliottHuman Nutrition Research Unit, Department of Agricultural, Food, & Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Mario SiervoSchool of Life Sciences, Division of Physiology, Pharmacology and Neuroscience, University of Nottingham, Nottingham, United Kingdom.
Sunita GhoshDepartment of Medical Oncology, University of Alberta, Edmonton, Alberta, Canada.
Aloys BergFaculty of Medicine, University of Freiburg, Freiburg, Germany.
Carla M PradoHuman Nutrition Research Unit, Department of Agricultural, Food, & Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
University of Alberta · CAUniversity of Freiburg · DEUniversity of Nottingham · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHigh-protein diets and total diet replacements are becoming increasingly popular for weight loss; however, further research is needed to elucidate their impact on the mechanisms involved in weight regulation.

objectiveThe aim of this inpatient metabolic balance study was to compare the impact of a high-protein total diet replacement (HP-TDR) versus a control diet (CON) on select components of energy metabolism in healthy adults of both sexes.

methodsThe acute intervention was a randomized, controlled, crossover design with participants allocated to 2 isocaloric arms: 1) HP-TDR: 35% carbohydrate, 40% protein, and 25% fat achieved through a nutritional supplement; 2) CON: 55% carbohydrate, 15% protein, and 30% fat. Participants received the prescribed diets for 32 h while inside a whole-body calorimetry unit (WBCU). The first dietary intervention randomly offered in the WBCU was designed to maintain energy balance and the second matched what was offered during the first stay. Energy expenditure, macronutrient oxidation rates and balances, and metabolic blood markers were assessed. Body composition was measured at baseline using DXA.

resultsForty-three healthy, normal-weight adults (19 females and 24 males) were included. Compared with the CON diet, the HP-TDR produced higher total energy expenditure [(EE) 81 ± 82 kcal/d, P <0.001], protein and fat oxidation rates (38 ± 34 g/d, P <0.001; 8 ± 20 g/d, P = 0.013, respectively), and a lower carbohydrate oxidation rate (-38 ± 43 g/d, P <0.001). Moreover, a HP-TDR led to decreased energy (-112 ± 85 kcal/d; P <0.001), fat (-22 ± 20 g/d; P <0.001), and carbohydrate balances (-69 ± 44 g/d; P <0.001), and increased protein balance (90 ± 32 g/d; P <0.001).

conclusionsOur primary findings were that a HP-TDR led to higher total EE, increased fat oxidation, and negative fat balance. These results suggest that a HP-TDR may promote fat loss compared with a conventional isocaloric diet. These trials were registered at clinicaltrials.gov as NCT02811276 and NCT03565510.

Indexed as

Adipose TissueAdultDietary ProteinsEnergy MetabolismFemaleHumansMaleYoung AdultDietary Proteinsadultsenergy metabolismmetabolic biomarkersproteintotal diet replacement

Identifiers

PMID33247306
PMCPMC7851826
OpenAlexW3109889211

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.