Evidence mapPaperPMID 42296065Full record

ArticlePloS one2026

Effects of local heat on metabolic health, frailty risk, and exercise adaptations in pre-diabetic older adults: Protocol for the Heat and Exercise in Aging as Therapy (HEAT) clinical trial.

Hui-Ying Luk, Casey R Appell, Fangyuan Zhang, Jarrod Blinch, K Sreekumaran Nair, Chwan-Li Shen, Danielle E Levitt

Abstract readClinical Trial Protocol
In one paragraph

Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Hui-Ying LukApplied Exercise Physiology Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, Texas, United States of America.ORCID https://orcid.org/0000-0001-9194-7598
Casey R AppellApplied Exercise Physiology Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, Texas, United States of America.
Fangyuan ZhangDepartment of Mathematics and Statistics, Texas Tech University, Lubbock, Texas, United States of America.
Jarrod BlinchPerception, Cognition, and Action Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, Texas, United States of America.
K Sreekumaran NairDivision of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, Rochester, Minnesota, United States of America.
Chwan-Li ShenDepartment of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America.
Danielle E LevittMetabolic Health and Muscle Physiology Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, Texas, United States of America.ORCID https://orcid.org/0000-0003-1865-1971

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionGlycemic dysregulation is a hallmark of type 2 diabetes (T2D) and contributes to skeletal muscle (SKM) loss and frailty risk, especially in older adults. Glycemic control and physical function are supported by SKM capillarization and mitochondrial function, and their impairment contributes to T2D development. While high-intensity interval training (HIIT) is a promising intervention, adherence and effectiveness remain concerns for prescribing HIIT among older adults at risk for T2D. Local heat therapy (LHT) may be a more practical initial strategy to improve SKM architectural factors and precondition SKM, enhancing physiological adaptations to exercise in this population. METHODS AND ANALYSIS: Heat and Exercise in Aging as Therapy (HEAT) is a two-phase, randomized, sham-controlled clinical trial investigating the efficacy of LHT to improve glycemic control and decrease frailty risk via improved SKM architecture among older adults with prediabetes. LHT is tested as a standalone intervention and as a means to precondition SKM for subsequent HIIT, improving exercise adaptations. In Phase 1, LHT and sham (CON) groups apply heat pads for 90 minutes/day, 6 days/week, for 12 weeks. A separate HIIT group completes 4x4-minute cycling intervals at 90-95% VO₂peak, 3 days/week. In Phase 2, LHT and CON groups begin HIIT. Participants (≥50 years) have impaired fasting glucose (100-125 mg/dL) and/or HbA1c (5.7-6.4%). Biospecimen collection and clinical assessments occur at baseline (T1), after Phase 1 (T2), and Phase 2 (T3). To our knowledge, this is the first study to determine the use of local heat pad on pre-diabetic older population. If successful, LHT may be a practical, scalable, non-invasive intervention to improve glycemic control and reduce frailty risk in older adults with prediabetes, preventing progression to T2D.

Indexed as

Adaptation, PhysiologicalAgingExerciseFrailtyHot TemperaturePrediabetic StateAgedBlood GlucoseDiabetes Mellitus, Type 2FemaleHigh-Intensity Interval TrainingHumansMaleMuscle, SkeletalRandomized Controlled Trials as TopicBlood Glucose

Identifiers

PMID42296065
PMCPMC13268183

What Socratic holds

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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 Socratic graph.