Cited by 815Physical Activity and HealthDiabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and Research

Effects of Different Modes of Exercise Training on Glucose Control and Risk Factors for Complications in Type 2 Diabetic Patients

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Snowling, Neil J., Hopkins, Will G.·2006·Diabetes Care

Abstract

OBJECTIVE—We sought to meta-analyze the effects of different modes of exercise training on measures of glucose control and other risk factors for complications of diabetes. RESEARCH DESIGN AND METHODS—The 27 qualifying studies were controlled trials providing, for each measure, 4–18 estimates for the effect of aerobic training, 2–7 for resistance training, and 1–5 for combined training, with 1,003 type 2 diabetic patients (age 55 ± 7 years [mean ± between-study SD]) over 5–104 weeks. The meta-analytic mixed model included main-effect covariates to control for between-study differences in disease severity, sex, total training time, training intensity, and dietary cointervention (13 studies). To interpret magnitudes, effects were standardized after meta-analysis using composite baseline between-subject SD. RESULTS—Differences among the effects of aerobic, resistance, and combined training on HbA1c (A1C) were trivial; for training lasting ≥12 weeks, the overall effect was a small beneficial reduction (A1C 0.8 ± 0.3% [mean ± 90% confidence limit]). There were generally small to moderate benefits for other measures of glucose control. For other risk factors, there were either small benefits or effects were trivial or unclear, although combined training was generally superior to aerobic and resistance training. Effects of covariates were generally trivial or unclear, but there were small additional benefits of exercise on glucose control with increased disease severity. CONCLUSIONS—All forms of exercise training produce small benefits in the main measure of glucose control: A1C. The effects are similar to those of dietary, drug, and insulin treatments. The clinical importance of combining these treatments needs further research.

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  • Exercise reduces cardiovascular risk factors, contributes to weight loss, and improves sense of well-being in people with diabetes.

    “In addition to improving BG control, exercise has been shown to reduce CV risk factors, contribute to weight loss, and improve sense of well-being.943,946–948”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [948]

    The Effects of exercise section (page not provided) reports small or moderate blood-pressure benefits from aerobic and combined exercise, and mostly trivial or small benefits for anthropometric measures, including body mass. It does not report an improvement in sense of well-being; its findings on blood lipids are mostly trivial or unclear. Thus the citation supports parts of the claim, but not all of it. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Higher amounts of aerobic exercise are linked to markedly lower cardiovascular and all-cause mortality in type 1 and type 2 diabetes.

    “Moderate to high volumes of aerobic activity are associated with substantially lower CV and overall mortality risks in both T1D and T2D.948,949”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [948]

    The 'Moderating effects of study characteristics' section discusses an estimated cardiovascular-disease risk reduction inferred from A1C changes in type 2 diabetes, not observed cardiovascular or all-cause mortality. It says an assessment of morbidity and mortality would require studies the authors did not have. Searches for mortality, type 1 diabetes, and exercise volume found no passage establishing the claimed association. (LLM, conf=0.77)

    Experimental — accuracy not yet measured
  • Aerobic and resistance exercise improve glycemic control in patients with type 2 diabetes.

    “Aerobic and resistance exercise have been well studied and are known to improve glycemic control in patients with T2DM.”
  • Regular aerobic exercise in type 2 diabetes improves A1c, blood pressure, triglyceride levels, and decreases insulin resistance.

    “Regular aerobic exercise in patients with T2DM has been shown to improve A1c, blood pressure, triglyceride levels, and decrease insulin resistance.”
  • Systematic reviews and meta-analyses show fewer daily hyperglycemia episodes and A1c reductions of 0.3% to 0.7% with aerobic training.

    “Systematic reviews and meta-analyses have shown fewer daily episodes of hyperglycemia and a reduction in A1c by .3-.7% with aerobic training.”

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Research works printed but not linked: 2

  1. [31]31. Yang M: A Review of Random Effects Mod- elling in SAS (Release 8.2). London, Centre for Multilevel Modelling, 2003
  2. [47]47. McArdle WD, Katch FI, Katch VL: Essen- tials of Exercise Physiology. Baltimore, MD, Lippincott Williams & Wilkins, 2005

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Authors
Snowling, N. J., & Hopkins, W. G.
Affiliations
Auckland University of Technology (NZ)
Venue
Diabetes Care
Published
2006-11-01
Volume
29
Issue
11
Pages
2518-2527
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2170920749
Cited by
813
References
78
Citations by year
2026: 16 · 2025: 29 · 2024: 47 · 2023: 40 · 2022: 37 · 2021: 49 · 2020: 45 · 2019: 40 · 2018: 31 · 2017: 54 · 2016: 44 · 2015: 40 · 2014: 64 · 2013: 50 · 2012: 65
FWCI
3.03
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
  • Victoria University Research Repository (Victoria University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
type 2 diabetes, exercise training, aerobic exercise, resistance training, concurrent training, glycemic control, HbA1c, diabetes complications, disease severity
MeSH terms
Blood Glucose, Diabetes Mellitus, Type 2, Humans, Risk Factors, Exercise, Diabetes Complications

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