Cited by 787Cardiovascular and exercise physiologyPhysical Activity and HealthDiabetes Management and Research

Low-volume high-intensity interval training reduces hyperglycemia and increases muscle mitochondrial capacity in patients with type 2 diabetes

Little, Jonathan P., Gillen, Jenna B., Percival, Michael E., Safdar, Adeel, Tarnopolsky, Mark A., Punthakee, Zubin, Jung, Mary E., Gibala, Martin J.·2011·Journal of Applied Physiology

Abstract

Low-volume high-intensity interval training (HIT) is emerging as a time-efficient exercise strategy for improving health and fitness. This form of exercise has not been tested in type 2 diabetes and thus we examined the effects of low-volume HIT on glucose regulation and skeletal muscle metabolic capacity in patients with type 2 diabetes. Eight patients with type 2 diabetes (63 ± 8 yr, body mass index 32 ± 6 kg/m 2, Hb A1C 6.9 ± 0.7%) volunteered to participate in this study. Participants performed six sessions of HIT (10 × 60-s cycling bouts eliciting ∼90% maximal heart rate, interspersed with 60 s rest) over 2 wk. Before training and from ∼48 to 72 h after the last training bout, glucose regulation was assessed using 24-h continuous glucose monitoring under standardized dietary conditions. Markers of skeletal muscle metabolic capacity were measured in biopsy samples (vastus lateralis) before and after (72 h) training. Average 24-h blood glucose concentration was reduced after training (7.6 ± 1.0 vs. 6.6 ± 0.7 mmol/l) as was the sum of the 3-h postprandial areas under the glucose curve for breakfast, lunch, and dinner (both P < 0.05). Training increased muscle mitochondrial capacity as evidenced by higher citrate synthase maximal activity (∼20%) and protein content of Complex II 70 kDa subunit (∼37%), Complex III Core 2 protein (∼51%), and Complex IV subunit IV (∼68%, all P < 0.05). Mitofusin 2 (∼71%) and GLUT4 (∼369%) protein content were also higher after training (both P < 0.05). Our findings indicate that low-volume HIT can rapidly improve glucose control and induce adaptations in skeletal muscle that are linked to improved metabolic health in patients with type 2 diabetes.

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Crossref · 10.1152/japplphysiol.00921.2011

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Authors
Little, J. P., Gillen, J. B., Percival, M. E., Safdar, A., Tarnopolsky, M. A., Punthakee, Z., Jung, M. E., & Gibala, M. J.
Affiliations
  • Departments of Kinesiology and of
  • McMaster University (CA)
  • University of British Columbia, Okanagan Campus (CA)
Corresponding author
Gibala, Martin J.
Venue
Journal of Applied Physiology
Published
2011-12
Volume
111
Issue
6
Pages
1554-1560
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2158620938
Cited by
787
References
28
Citations by year
2026: 23 · 2025: 31 · 2024: 40 · 2023: 43 · 2022: 49 · 2021: 57 · 2020: 77 · 2019: 60 · 2018: 74 · 2017: 62 · 2016: 60 · 2015: 70 · 2014: 60 · 2013: 44 · 2012: 31
FWCI
118.70
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
high-intensity interval training, type 2 diabetes, hyperglycemia, glucose regulation, citrate synthase, mitofusin 2, GLUT4, vastus lateralis, training effects
MeSH terms
Adaptation, Physiological, Aged, Blood Glucose, Diabetes Mellitus, Type 2, Exercise Therapy, Humans, Hyperglycemia, Middle Aged, Mitochondria, Muscle, Physical Fitness, Pilot Projects, Muscle, Skeletal, Glucose Transporter Type 4

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