Evidence map›Paper›PMID 30650997›Full record

Trial reportJournal of diabetes science and technology2019

Prediction of Hypoglycemia During Aerobic Exercise in Adults With Type 1 Diabetes.

Ravi Reddy, Navid Resalat, Leah M Wilson, Jessica R Castle, Joseph El Youssef, Peter G Jacobs

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of diabetes science and technology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
4.9field-weighted citation impact, top 4% 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.

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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 73 citations in OpenAlex.

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  9. Artificial Intelligence to Diagnose Complications of Diabetes.Journal of diabetes science and technology · 2025
    Review
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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

6 authors at 1 institution in 1 country.

Ravi Reddy1 Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.
Navid Resalat1 Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.
Leah M Wilson2 Department of Medicine, Division of Endocrinology, Harold Schnitzer Diabetes Health Center Oregon, Health & Science University, Portland, OR, USA.ORCID 0000-0003-3634-481X
Jessica R Castle2 Department of Medicine, Division of Endocrinology, Harold Schnitzer Diabetes Health Center Oregon, Health & Science University, Portland, OR, USA.
Joseph El Youssef1 Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.
Peter G Jacobs1 Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA.
Oregon Health & Science University · US

Funding

Oregon Clinical and Translational Research Institute - The National COVID Cohort Collaborative (N3C)UL1TR002369 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI Cynthia D Morris, Christopher G. Slatore · 2017 to 2026
$78.4M
Mitigating risk in a closed loop system by exercise detection and miniaturizationDP3DK101044 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI CASTLE, JESSICA R, JACOBS, PETER G · 2013 to 2013
$2.9M
Improving glucose control with advanced technology designed for high risk patients with type 1 diabetesR01DK120367 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI JACOBS, PETER G, WILSON, LEAH MEGAN · 2018 to 2021
$2.4M
NCATS NIH HHS UL1 TR002369NIDDK NIH HHS DP3 DK101044NIDDK NIH HHS R01 DK120367
6 · The paper itself

Abstract

backgroundFear of exercise related hypoglycemia is a major reason why people with type 1 diabetes (T1D) do not exercise. There is no validated prediction algorithm that can predict hypoglycemia at the start of aerobic exercise.

methodsWe have developed and evaluated two separate algorithms to predict hypoglycemia at the start of exercise. Model 1 is a decision tree and model 2 is a random forest model. Both models were trained using a meta-data set based on 154 observations of in-clinic aerobic exercise in 43 adults with T1D from 3 different studies that included participants using sensor augmented pump therapy, automated insulin delivery therapy, and automated insulin and glucagon therapy. Both models were validated using an entirely new validation data set with 90 exercise observations collected from 12 new adults with T1D.

resultsModel 1 identified two critical features predictive of hypoglycemia during exercise: heart rate and glucose at the start of exercise. If heart rate was greater than 121 bpm during the first 5 min of exercise and glucose at the start of exercise was less than 182 mg/dL, it predicted hypoglycemia with 79.55% accuracy. Model 2 achieved a higher accuracy of 86.7% using additional features and higher complexity.

conclusionsModels presented here can assist people with T1D to avoid exercise related hypoglycemia. The simple model 1 heuristic can be easily remembered (the 180/120 rule) and model 2 is more complex requiring computational resources, making it suitable for automated artificial pancreas or decision support systems.

Indexed as

HypoglycemiaMachine LearningAdultBlood GlucoseDiabetes Mellitus, Type 1ExerciseFemaleHeart RateHumansMalePancreas, ArtificialBlood Glucoseartificial pancreasexercisehypoglycemiamachine learningtype 1 diabetes

Identifiers

PMID30650997
PMCPMC6955453
OpenAlexW2909057746

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.