Research Summary
Analyzed using Evidence Intelligence™

Combining Exercise and Polyphenols Improves Glycemic Control in Prediabetes

Last updated July 18, 2026

Key finding

FBG decreased significantly in the CBT + EATME group compared with placebo (p < 0.01).

This study investigated the effects of concurrent training and microencapsulated polyphenol supplementation on glycemic control in adults with prediabetes, finding significant improvements in several health markers.

Quick read

Study at a glance

The essential study design details in one scan.

EvidenceScore™

Moderate

Study type

RCTs

Follow-up

Short-Term (≤3 mo)

Risk of bias

Some Concerns

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Plain-language summary

What this paper says

A plain-language read of the study’s main message and where it applies.

Study focus

This study investigated the effects of concurrent training and microencapsulated polyphenol supplementation on glycemic control in adults with prediabetes, finding significant improvements in several health markers.

Clinical relevance

These findings highlight the potential for integrated lifestyle interventions in managing prediabetes, which is crucial given the rising prevalence of diabetes. Effective strategies that combine physical activity with nutritional support could help mitigate the progression to type 2 diabetes and improve overall health outcomes.

Keep in mind

The study's sample size and demographic diversity may limit generalizability. The long-term effects of the interventions were not assessed. Potential confounding factors were not fully controlled.

Published in

Journal Reference

Publication details and source links for this paper.

Udomlak S, Prapassorn R, Ketsaree K, et al. Synergistic Effects of Concurrent Training and Microencapsulated Polyphenol Supplementation on Glycemic Control in Adults with Prediabetes. Nutrients. 2025;17(21):3358. doi:10.3390/nu17213358

Main Effects

Fasting blood glucose decreased by 5.8 mg/dL in the CBT + EATME group (p < 0.01).

HbA1c decreased by 0.5% in the CBT + EATME group (p < 0.05).

HOMA-IR decreased significantly in the CBT + EATME group (p < 0.01).

Evidence network

How this study fits

Understand where this research contributes within the broader evidence network.

Evidence Context

This study contributes evidence to Exercise therapy and Adiponectin, C-reactive protein, Fasting blood sugar (FBS), and 6 more.

Primary intervention

Exercise therapy

Primary outcomes

  • Adiponectin
  • C-reactive protein
  • Fasting blood sugar (FBS)

Evidence relationships

Intervention and outcome relationships this study adds to the evidence network.

9
Evidence pairs
9
Relationships
7
Evidence topics
contributes_evidence

Editorial context

Why this study matters

See why this paper is useful beyond its individual results.

Evidence network role

This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.

Moderate contributionModerate confidenceNetwork score: 72

7

Related topics

9

Evidence pairs

1150

Related studies

High relevance in at least one topic

Why it is useful

  • Contributes to 9 evidence relationships
  • Includes primary outcome data
  • Linked to 7 direct semantic evidence topics

Topic contributions

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

Evidence topic

Contributes evidence

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Primary evidence

Evidence topic

Diabetic Neuropathy

matched_intervention_and_outcome

Related evidence

Evidence topic

Diabetic Retinopathy

Save evidence

Core evidence

Study findings

The primary outcomes reported in this study.

Adiponectin

Exercise therapy → Adiponectin

Exercise therapy → Adiponectin

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

C-reactive protein

Exercise therapy → C-reactive protein

Exercise therapy → C-reactive protein

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
75
Positive
ConsistencyScore™
35
mixed
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Fasting blood sugar (FBS)

Exercise therapy → Fasting blood sugar (FBS)

Exercise therapy → Fasting blood sugar (FBS)

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
100
Very Positive
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

HbA1c

Exercise therapy → HbA1c

Exercise therapy → HbA1c

Evidence Intelligence™
EvidenceScore™
81
Strong
ImpactScore™
84
Positive
ConsistencyScore™
83
consistent
Supporting studies: Based on 6 studies
Add to Evidence Tracker

Insulin resistance

Exercise therapy → Insulin resistance

Exercise therapy → Insulin resistance

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
100
Very Positive
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Interleukin-6 (IL-6)

Exercise therapy → Interleukin-6 (IL-6)

Exercise therapy → Interleukin-6 (IL-6)

Evidence Intelligence™
EvidenceScore™
Strong
Score 79 · Based on 4 studies
ImpactScore™
88
Very Positive
ConsistencyScore™
75
consistent
Supporting studies: Based on 4 studies
Add to Evidence Tracker

Muscular strength

Exercise therapy → Muscular strength

Exercise therapy → Muscular strength

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Quality of life

Exercise therapy → Quality of life

Exercise therapy → Quality of life

Evidence Intelligence™
EvidenceScore™
Strong
Score 79 · Based on 3 studies
ImpactScore™
83
Positive
ConsistencyScore™
67
generally_consistent
Supporting studies: Based on 3 studies
Add to Evidence Tracker

VO2 max

Exercise therapy → VO2 max

Exercise therapy → VO2 max

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Evidence Library

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evidence suggest

Evidence Suggest

  • hs-CRP decreased significantly in all intervention groups (p < 0.01).
  • IL-6 levels decreased significantly in all intervention groups (p < 0.01).
  • Adiponectin increased significantly in all intervention groups (p < 0.01).
who this applies

Who this applies to

  • Adults aged 18-65 with prediabetes.
  • Individuals seeking to improve glycemic control through lifestyle changes.
keep in mind

Keep in Mind

  • Results may not apply to populations outside the study's demographic.
  • The effects of the interventions over a longer period remain uncertain.
  • Further research is needed to explore the mechanisms behind the observed benefits.
between the lines

Between the Lines

  • The study's sample size and demographic diversity may limit generalizability.
  • The long-term effects of the interventions were not assessed.
  • Potential confounding factors were not fully controlled.

Evidence Library

Build your evidence library

Save research, organize studies, and quickly find important evidence again.

Connected Evidence

Explore related studies, evidence collections, and research questions.

Relationships organized using the Dediabetes Evidence Intelligence™ framework.

This study contributes to evidence on Exercise therapy and HbA1c, Exercise therapy and Inflammatory Markers.

Related evidence relationships

Explore in Evidence Explorer

This study contributes to the evidence on the following intervention-outcome relationships.

Questions answered by this study

Generated from the study's connected evidence using Evidence Intelligence™.

Does Exercise therapy improve HbA1c?

Strong Evidence

Exercise therapy may improve HbA1c.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    HbA1c

    EvidenceScore™ Strong | EvidenceScore™ 81.1 | moderate positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Jul 2026

Does Exercise therapy improve interleukin-6 (il-6)?

Strong Evidence

Exercise therapy appears to improve Interleukin-6 (IL-6).

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Interleukin-6 (IL-6)

    EvidenceScore™ Strong | EvidenceScore™ 79.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Jul 2026

Does Exercise therapy improve quality of life?

Strong Evidence

Exercise therapy may improve Quality of life.

ConsistencyScore™: Results are generally consistent across studies.

Ranked evidence signals

  1. 1

    Quality of life

    EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Generally Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Jul 2026

Does Exercise therapy improve fasting blood sugar (fbs)?

Moderate Evidence

Exercise therapy appears to improve Fasting blood sugar (FBS).

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Fasting blood sugar (FBS)

    EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Population details are unavailable.
1 supporting studyUpdated: Jul 2026
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