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Title: Does a single bout of resistance or aerobic exercise after insulin dose reduction modulate glycaemic control in type 2 diabetes? A randomised cross-over trial
Austin Authors: Gordon, Brett A;Bird, Stephen R;MacIsaac, Richard J;Benson, Amanda C
Affiliation: Discipline of Exercise Physiology, La Trobe Rural Health School, La Trobe University, Victoria, Australia
Physiotherapy Department, Austin Health, Heidelberg, Victoria, Australia
Discipline of Exercise Sciences, School of Medical Sciences, RMIT University, Victoria, Australia
Endocrinology and Diabetes, St. Vincent's Hospital & University of Melbourne, Victoria, Australia
Issue Date: Oct-2016 2016-02-10
Publication information: Journal of Science and Medicine in Sport 2016; 19(10): 795-799
Abstract: OBJECTIVES: Regular exercise is advocated for individuals with type 2 diabetes, without fully understanding the acute (0-72h post-exercise) glycaemic response. This study assessed post-exercise glycaemic profiles of non-exercising individuals with insulin treated type 2 diabetes, following resistance and aerobic exercise. DESIGN: Randomised cross-over trial. METHODS: Fourteen individuals with insulin treated type 2 diabetes (9 males, 5 females) aged 58.1±7.1 years (HbA1c: 8.0±0.6%) were allocated to single sessions of resistance (six whole-body exercises, three sets, 8-10 repetitions, 70% 1RM) and aerobic (30min cycling, 60% VO2peak) exercise, 7-days apart, with the day prior to the first exercise day of each intervention being the control condition. Immediately prior to exercise, insulin dosage was halved and breakfast consumed. Continuous glucose monitoring was undertaken to determine area under the curve and glucose excursions. RESULTS: Blood glucose initially increased (0-2h) following both resistance and aerobic exercise (p<0.001), peaking at 12.3±3.4mmolL(-1) and 12.3±3.3mmolL(-1), respectively. Area under the glucose curve was not statistically different over any of the 24h periods (p=0.12), or different in response to resistance (222±41mmolL(-1)24h(-1)) or aerobic (211±40 mmolL(-1)24h(-1)) exercise (p=0.56). Incidence of hyperglycaemia did not differ between exercise modes (p=0.68). Hypoglycaemic events were identified in three and four participants following resistance and aerobic exercise respectively: these did not require treatment. CONCLUSIONS: Glycaemic response is not different between exercise modes, although 50% insulin dose reduction prior to exercise impairs the expected improvement. A common clinical recommendation of 50% insulin dose reduction does not appear to cause adverse glycaemic events.
DOI: 10.1016/j.jsams.2016.01.004
PubMed URL:
Type: Journal Article
Subjects: Continuous glucose monitoring
Exercise therapy
Hypoglycemic agents
Resistance training
Appears in Collections:Journal articles

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