Scandinavian Journal of Medicine & Science in Sports

Cover image for Vol. 28 Issue 1

Edited By: Stephen Harridge

Impact Factor: 3.331

ISI Journal Citation Reports © Ranking: 2016: 9/81 (Sport Sciences)

Online ISSN: 1600-0838

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Increased insulin- stimulated glucose uptake in both leg and arm muscles after sprint interval and moderate- intensity training in subjects with type 2 diabetes or prediabetes
T. J. Sjöros et al.

With the increasing prevalence of type 2 diabetes interest in tackling this disease through non-pharmacological interventions has grown markedly. Exercise is of particular interest as both a preventive and a therapeutic measure with focus turning towards the most effective modes, volumes and intensities of intervention. In a study reported in this first SJMSS issue of 2018, Sjöros and co-workers have compared two exercise regimens in subjects with either type 2 diabetes or prediabetes. The first regimen was a high intensity sprint interval training (HIIT) protocol (4–6×30 s of all- out cycling with 4- minute recovery) and the second a moderate- intensity continuous training protocol (40 – 60 mins cycling at 60% of VO2max). Just six exercise sessions were undertaken over a 2 week period. Both regimens increased whole- body insulin sensitivity by on average ~25%. Glucose uptake measured in different muscles with positron emission tomography and using a hyperinsulinemic euglycemic clamp, showed that whilst insulin- stimulated glucose uptake was increased in all thigh and upper arm muscles, it improved more in the quadriceps with the high intensity sprint training than with the continuous moderate intensity training. Indeed, 2 weeks of high-intensity sprint training resulted in the restoration of glucose uptake levels to that previously reported in normal healthy subjects. These interesting data provide further evidence of the metabolic sensitivity of the muscles of type 2 diabetics to exercise and the efficacy of exercise as a treatment modality.

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