Evidence map›Paper›PMID 30973930›Full record

ArticlePloS one2019

Relationship between individual ventilatory threshold and maximal fat oxidation (MFO) over different obesity classes in women.

Gian Pietro Emerenziani, Dafne Ferrari, Chiara Marocco, Emanuela A Greco, Silvia Migliaccio, Andrea Lenzi, Carlo Baldari, Laura Guidetti

Abstract read
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In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 3 pooled it
–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

8 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Trial
  5. Article
  6. Review
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  8. Article
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

8 authors.

Gian Pietro EmerenzianiDepartment of Experimental and Clinical Medicine, University of Magna Graecia of Catanzaro, Catanzaro, Italy.
Dafne FerrariDepartment of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Rome, Italy.
Chiara MaroccoDepartment of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Rome, Italy.
Emanuela A GrecoDepartment of Experimental Medicine, Section of Medical Pathophysiology, Endocrinology and Nutrition, Sapienza University of Rome, Rome, Italy.
Silvia MigliaccioDepartment of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Rome, Italy.
Andrea LenziDepartment of Experimental Medicine, Section of Medical Pathophysiology, Endocrinology and Nutrition, Sapienza University of Rome, Rome, Italy.
Carlo BaldariUniversity eCampus, Novedrate, Italy.ORCID 0000-0001-6227-3571
Laura GuidettiDepartment of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Rome, Italy.ORCID 0000-0002-1419-4550

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe use of the Individual Ventilatory Threshold (IVT), as parameter to prescribe exercise intensity in individuals with obesity, has become more frequent during the last years. This study aimed to evaluate the relationship between IVT and Maximal Fat Oxidation (MFO) in women with obesity.

methodsFifty-two obese female adults (age = 43.6±10.9 years; BMI = 38.5±5.2 kg/m2) were included in this study. According to the BMI classification, subjects were divided into three groups: Obese Class I (OBI, n = 16); Obese Class II (OBII, n = 20) and Obese Class III (OBIII, n = 16). All subjects performed an incremental graded exercise test to evaluate peak oxygen uptake (VO2peak), IVT and MFO. MFO was evaluated using a stoichiometric equation. Fat max zone was determined for each subject within 10% of fat oxidation rates at MFO. For each HR, %HRmax, VO2 and %VO2peak variable, Pearson's correlation test was done between IVT and MFO exercise intensity. When statistical correlation was found we used a comparative statistical analysis to assess differences between IVT and MFO. Statistical significance was set at P ≤ 0.05.

resultsFor each HR, %HRmax, VO2 and %VO2peak variable there was a positive significant correlation (P<0.01) between IVT and MFO. No significant differences were found for HR, %HRmax, and VO2 between IVT and MFO. %VO2peak was significantly higher at IVT than at MFO (P = 0.03). MFO rates were significantly higher in OBIII women than in women of the other two classes. In all subjects, IVT was within the fat max zone.

conclusionThe use of HR and VO2 corresponding to IVT could be a useful parameter not only to improve cardiorespiratory fitness but also to prescribe physical activity that maximize fat oxidation in obese subjects.

Indexed as

Adipose TissueAdultCalorimetry, IndirectCardiorespiratory FitnessExerciseExercise TestFemaleHeart RateHumansMiddle AgedObesityObesity, MorbidOxidation-ReductionOxygen Consumption

Identifiers

PMID30973930
PMCPMC6459513

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Registered trials

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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.