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Twice-Weekly Progressive Resistance Training Decreases Abdominal Fat and Improves Insulin Sensitivity in Older Men With Type 2 Diabetes
Open accessAbstract
OBJECTIVE—To evaluate the influence of a twice-weekly progressive resistance training (PRT) program, without a concomitant weight loss diet, on abdominal fat and insulin sensitivity in older men with type 2 diabetes. RESEARCH DESIGN AND METHODS—Nine older men (aged 66.6 ± 3.1) with type 2 diabetes participated in a 16-week PRT supervised program (50–80% of the one repetition maximum), for all main muscle groups. Basal glycemia, HbA1c, diet, habitual physical activity, body composition, and upper/lower maximal strength were measured. Insulin sensitivity was determined according to Bergman’s minimal model procedure and abdominal fat was obtained by computed tomography. The measurements were taken 4 weeks before training (−4), immediately before training (0), and at 8-week intervals (i.e., weeks 8 and 16) during the 16-week training period. RESULTS—No significant variation was observed in any of the above selected parameters during the 4-week control period. After PRT, both leg and arm maximal strength increased significantly by 17.1 and 18.2%, respectively. Visceral and subcutaneous abdominal fat decreased significantly by 10.3% (from 249.5 ± 97.9 to 225.6 ± 96.6 cm3, P < 0.01) and by 11.2% (from 356.0 ± 127.5 to 308.6 ± 118.8 cm3, P < 0.01), respectively, while no changes were observed in body mass. PRT significantly increased insulin sensitivity by 46.3% (from 2.0 ± 1.2 to 2.8 ± 1.6 · 104 · min−1 · μU−1 · ml−1, P < 0.01), whereas it significantly decreased (−7.1%, P < 0.05) fasting blood glucose (from 146.6 ± 28.3 to 135.0 ± 29.3 mg/dl). Finally, a 15.5% increase in energy intake (from 2,287.1 ± 354.7 to 2,619.0 ± 472.1 kcal/day, P < 0.05) was observed. CONCLUSIONS—Two sessions per week of PRT, without a concomitant weight loss diet, significantly improves insulin sensitivity and fasting glycemia and decreases abdominal fat in older men with type 2 diabetes.
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“Reductions in trunk fat correlate with improved glycemic control in T2D [316,317].”
From Global consensus on optimal exercise recommendations for enhancing healthy longevity in older adults (ICFSR) (2025) · cites this paper as [316]
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“Most benefits of PA on type 2 diabetes management and prevention are realized through acute and chronic improvements in insulin action ( 29 , 46 , 116 , 118 , 282 ).”
From Exercise and Type 2 Diabetes (2010) · cites this paper as [116]
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“In a randomized controlled trial (RCT), twice-weekly progressive resistance training for 16 weeks by older men with newly diagnosed type 2 diabetes resulted in a 46.3% increase in insulin action, a 7.1% reduction in fasting BG levels, and significant loss of visceral fat ( 116 ).”
From Exercise and Type 2 Diabetes (2010) · cites this paper as [116]
Experimental — accuracy not yet measuredIn the citing paper
“Reduced visceral fat has been shown to improve glucose tolerance and insulin sensitivity in individuals with and without diabetes.”
From Global consensus on optimal exercise recommendations for enhancing healthy longevity in older adults (ICFSR) (2025) · cites this paper as [316]
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Cites
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Exercise and Insulin Sensitivity: A Review
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Exercise and Physical Activity for Older Adults
Chodzko-Zajko, W. J., Proctor, D. N., Fiatarone Singh, M. A., Minson, C. T., Nigg, C. R., Salem, G. J., & Skinner, J. S. (2009) · Medicine & Science in Sports & Exercise · doi:10.1249/mss.0b013e3181a0c95c · Cited by 5,153
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“1% reduction in fasting BG levels, and significant loss of visceral fat (116).”
Fragala, M. S., Cadore, E. L., Dorgo, S., Izquierdo, M., Kraemer, W. J., Peterson, M. D., & Ryan, E. D. (2019) · Journal of Strength and Conditioning Research · doi:10.1519/jsc.0000000000003230 · Cited by 1,290
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Metadata
- Authors
- Ibañez, J., Izquierdo, M., Argüelles, I., Forga, L., Larrión, J. L., García-Unciti, M., Idoate, F., & Gorostiaga, E. M.
- Affiliations
- Gobierno de Navarra (ES)
- Studies, Research and Sports Medicine Center, Government of Navarra, Pamplona-Navarra, Spain
- Department of Endocrinology, Hospital of Navarra, Pamplona-Navarra, Spain
- Complejo Hospitalario de Navarra (ES)
- Department of Health, Hospital of Navarra, Pamplona-Navarra, Spain
- Department of Dietetic and Dietotherapy, University of Navarra, Pamplona-Navarra, Spain
- Department of Radiology, Clinic of San Miguel, Pamplona-Navarra, Spain
- Venue
- Diabetes Care
- Publisher
- American Diabetes Association
- Published
- 2005-03-01
- Volume
- 28
- Issue
- 3
- Pages
- 662-667
- ISSN
- 0149-5992 (ISSN-L)
- 1935-5548
- OpenAlex
- W2133646769
- Cited by
- 442
- References
- 24
- Citations by year
- 2026: 10 · 2025: 10 · 2024: 16 · 2023: 17 · 2022: 13 · 2021: 16 · 2020: 16 · 2019: 14 · 2018: 21 · 2017: 22 · 2016: 24 · 2015: 26 · 2014: 32 · 2013: 23 · 2012: 30
- FWCI
- 11.19
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Diabetes Care (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Physical Activity and Health
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
- Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
- Keywords
- progressive resistance training, type 2 diabetes, older men, abdominal fat, visceral fat, subcutaneous adipose tissue, insulin sensitivity, maximal strength, fasting blood glucose, HbA1c, energy intake, body composition, resistance training, Bergman minimal model, body mass index
- MeSH terms
- Abdomen, Adipose Tissue, Aged, Body Composition, Diabetes Mellitus, Type 2, Exercise Test, Humans, Life Style, Male, Patient Compliance, Physical Fitness, Stress, Mechanical, Exercise
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