Simulated games activity vs continuous running exercise: A novel comparison of the glycemic and metabolic responses in T1DM patients

Matthew Campbell, Dan West, Stephen Bain, Michael Kingsley, Paul Foley, Liam Kilduff, David Turner, Ben Gray, Jeffrey Stephens, Richard Bracken

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

To compare the glycemic and metabolic responses to simulated intermittent games activity and continuous running exercise in type 1 diabetes. Nine patients (seven male, two female; 35 ± 4 years; HbA1c 8.1 ± 0.2%/65 ± 2 mmol/mol) treated on a basal-bolus regimen completed two main trials, a continuous treadmill run (CON) or an intermittent running protocol (INT). Patients arrived to the laboratory fasted at ∼ 08:00 h, replicating their usual pre-exercise meal and administering a 50% reduced dose of rapid-acting insulin before exercising. Blood glucose (BG), K+, Na++, pH, triglycerides, serum cortisol and NEFA were measured at baseline and for 60 min post-exercise. Interstitial glucose was measured for a further 23 h under free-living conditions. Following exercise, BG declined under both conditions but was less under INT (INT −1.1 ± 1.4 vs CON −5.3 ± 0.4 mmol/L, P = 0.037), meaning more patients experienced hypoglycemia (BG ≤ 3.5 mmol/L; CON n = 3 vs INT n = 2) but less hyperglycemia (BG ≥ 10.9 mmol/L; CON n = 0 vs INT n = 6) under CON. Blood lactate was significantly greater, and pH lower, with a temporal delay in K+ under INT (P 
Original languageEnglish
Pages (from-to)216-222
JournalScandinavian Journal Of Medicine & Science In Sports
Volume25
Issue number2
DOIs
Publication statusPublished - Apr 2015

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