Evidence map›Paper›PMID 34836342›Full record

ArticleNutrients2021

No Significant Effect of the Individual Chronotype on the Result of Moderate Calorie Restriction for Obesity-A Pilot Study.

Zofia Strojny, Rafał Rutkowski, Alina Kanikowska, Agnieszka Zawada, Aldona Juchacz, Marian Grzymisławski, Maki Sato, Monika Litwinowicz, Katarzyna Korybalska, Andrzej Bręborowicz and 2 more

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In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Zofia StrojnyDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.
Rafał RutkowskiDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.
Alina KanikowskaDepartment of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznan, Poland.
Agnieszka ZawadaDepartment of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznan, Poland.ORCID 0000-0001-6995-090X
Aldona JuchaczDepartment of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznan, Poland.
Marian GrzymisławskiDepartment of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 60-355 Poznan, Poland.
Maki SatoDepartment of Physiology, Institutional Research, School of Medicine, Aichi Medical University, Aichi 480-1195, Japan.
Monika LitwinowiczDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.
Katarzyna KorybalskaDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.ORCID 0000-0002-6291-0814
Andrzej BręborowiczDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.
Janusz WitowskiDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.ORCID 0000-0002-1093-6027
Dominika KanikowskaDepartment of Pathophysiology, Poznan University of Medical Sciences, 61-701 Poznan, Poland.ORCID 0000-0001-8433-5745

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronotype is the pattern of the circadian rhythm that allows an individual to optimize times of sleep and activity. It has been observed that chronotypes may associate with some conditions and diseases, including obesity. It is not known, however, whether chronotypes determine the effectiveness of weight loss regimens. Therefore, in the present study, we compared the outcomes of a 3-week moderate calorie restriction undertaken by individuals with obesity under the same controlled hospital conditions.

methodsA total of 131 participants with obesity (median BMI 40.0) were studied. The subjects underwent the same dietary intervention over 3 weeks, with a 30% reduction in daily caloric intake. The individual chronotypes were assessed by the morning and evening questionnaire (MEQ) according to Horne and Östberg. Anthropometric and biochemical parameters were assessed by routine methods.

resultsOf all patients examined, 75% had the morning (lark) chronotype and 25% had the evening (owl) chronotype. These patient sub-groups did not differ in terms of demographic, anthropometric and biochemical characteristics at baseline. After 3 weeks of calorie restriction, both groups experienced a similar loss of weight and BMI (Body Mass Index) (3.4 ± 0.38% for larks vs. 4.1 ± 0.47% for owls,

conclusionsThe chronotype of individuals with obesity does not have a significant effect on the magnitude of the body weight loss, but there is a tendency observed towards the reduction in body fat content in owls through changing their meal and sleep timing to earlier hours, in response to moderate calorie restriction applied under the same controlled conditions.

Indexed as

AdultAgedAnthropometryBody Mass IndexCaloric RestrictionCircadian RhythmC-Reactive ProteinFeeding BehaviorFemaleGlycated HemoglobinHumansMaleMiddle AgedObesityPilot ProjectsSleepC-Reactive ProteinGlycated Hemoglobincalorie restrictionchronotypeobesity

Identifiers

PMID34836342
PMCPMC8617879

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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.