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Record W2089552652 · doi:10.13034/cysj-2014-002

The Effect of Obesity on Nocturnal Blood Pressure Patterns

2014· article· en· W2089552652 on OpenAlexvenueno aff
Arjun Pandey

Bibliographic record

VenueJournal of Student Science and Technology · 2014
Typearticle
Languageen
FieldMedicine
TopicBlood Pressure and Hypertension Studies
Canadian institutionsnot available
Fundersnot available
KeywordsNocturnalBlood pressureBody mass indexMedicineAmbulatory blood pressureObesityInternal medicineDashDietingWeight lossCircadian rhythmEndocrinology

Abstract

fetched live from OpenAlex

Abnormal nocturnal blood pressure (BP) during sleep is considered an indication of many cardio­vascular diseases.[1] For healthy individuals, noc­turnal BP drops 5-10% on ambulatory BP monitor­ing (ABPM). Individuals with abnormal nocturnal BP are classified in three distinct ways: (1) an ab­sence of BP drop, (2) a lack of typical nocturnal dip (LND), or (3) a rise of BP at night (RBPN).[3] In this study, we examine a potential correlation between obesity and abnormal nocturnal BP and the impact of weight loss on nocturnal BP patterns. For our study, we recruited 30 individuals with LND, 30 with RBPN, and 20 with normal nocturnal BP (control) and placed them all on a prescribed DASH diet previously demonstrated to improve daytime BP.[9] Baseline ABPM readings and body mass index (BMI) measurements for each individ­ual were compared before and after two months of dieting. After two months on the DASH diet, the control group had the lowest BMI followed by the LND group and the RBPN group. These results demonstrate a linear correlation between BMI and nocturnal BP. Individuals who lost less than 5% of their original weight experienced a 3% increase in BP at night. Those who lost more than 5% weight experienced a 8.5% decrease in BP nocturnally, effectively restoring their healthy nocturnal BP pat­tern. Thus, obesity may contribute to nocturnal BP abnormalities, and weight loss may improve this condition. Une pression artérielle (PA) nocturne anormale durant le sommeil est considérée un indicateur de nombreuses maladies cardiovasculaires.[1] Chez les personnes saines, la PA nocturne diminue de façon physiologique d’environ 5-10 % mesurée grâce au moniteur ambulatoire de pression artérielle (MAPA). Les personnes ayant une PA nocturne anormale sont classées de trois façons distinctes: 1) une absence d’une diminution de PA, 2) un manque de « dipping » nocturne typique (MDN), ou 3) une augmentation de la PA durant la nuit (APAN).[3] Dans cette étude, nous examinons la possibilité d’une corrélation entre l’obésité et la PA nocturne anormale et l’impact d’une perte de poids sur les motifs de la PA nocturne. Pour notre étude, nous avons recruté 30 individus avec MDN, 30 avec APAN, et 20 individus avec une PA nocturne normale (groupes contrôle), et les avons mis sur le régime DASH qui a précédemment dé­montré une amélioration de PA durant la journée.[9] Des mesures de base avec MAPA ainsi que des mesures d’indice de masse corporelle (IMC) furent prises pour chaque individu, et par la suite utilisées afin de les comparer avec les mesures de MAPA et d’IMC suites aux deux mois du régime. Après avoir suivi le régime DASH pendant une durée de deux mois, le groupe contrôle avait la plus faible IMC suivie par le groupe du MDN, et le groupe APAN eu le plus haut IMC global. Ces résultats démontrent une relation linéaire entre l’IMC et des anomalies de PA nocturnes. Les individus qui ont perdus <5 % de poids ont su voir une augmentation de PA d’un taux de 3 % la nuit. Ceux qui ont perdu ≥ 5 % de poids ont eu une diminution de leur PA de 8,5% la nuit ce qui rétablit un motif sains de PA nocturne. Par con­séquent, conformément à cette étude on peut con­clure que l’obésité contribue à des anormalités de la PA nocturne, et la perte de poids peut améliorer cette conditions.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.132
Threshold uncertainty score0.230

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.279
Teacher spread0.271 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

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Citations0
Published2014
Admission routes1
Has abstractyes

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