A 10-s sprint performed prior to moderate-intensity exercise prevents early post-exercise fall in glycaemia in individuals with type 1 diabetes

被引:71
作者
Bussau, V. A.
Ferreira, L. D.
Jones, T. W.
Fournier, P. A.
机构
[1] Univ Western Australia, Sch HumanMovement & Exercise Sci, Perth, WA 6009, Australia
[2] Princess Margaret Hosp, Dept Endocrinol & Diabet, Subiaco, WA, Australia
[3] Univ Western Australia, Telethon Inst Child Hlth Res, Ctr Child Hlth Res, Perth, WA 6009, Australia
基金
英国医学研究理事会;
关键词
exercise; glycaemia; glycemia; hypoglycaemia; hypoglycemia; physical activity; recovery; sprint; type; 1; diabetes;
D O I
10.1007/s00125-007-0727-8
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Aims/hypothesis We investigated whether a 10-s maximal sprint effort performed immediately prior to moderate-intensity exercise provides another means to counter the rapid fall in glycaemia associated with moderate-intensity exercise in individuals with type 1 diabetes. Materials and methods Seven complication-free type 1 diabetic males (21.6 +/- 3.6 years; mean +/- SD) with HbA(1c) levels of 7.4 +/- 0.7% injected their normal morning insulin dose and ate their usual breakfast. When post-meal glycaemia fell to similar to 11 mmol/l, participants were asked to perform a 10-s all-out sprint (sprint trial) or to rest (control trial) immediately before cycling at 40% of peak rate of oxygen consumption for 20 min, with both trials conducted in a random counterbalanced order. Results Sprinting did not affect the rapid fall in glycaemia during the subsequent bout of moderate-intensity exercise (2.9 +/- 0.4 mmol/l in 20 min; p=0.00; mean +/- SE). However, during the following 45 min of recovery, glycaemia in the control trial decreased by 1.23 +/- 0.60 mmol/l (p=0.04) while remaining stable in the sprint trial, subsequently decreasing in this latter trial at a rate similar to that in the control trial. The large increase in noradrenaline (norepinephrine) (p=0.005) and lactate levels (p=0.0005) may have contributed to the early post-exercise stabilisation of glycaemia in the sprint trial. During recovery, adrenaline (epinephrine) and NEFA levels increased marginally in the sprint trial, but other counter-regulatory hormones did not change significantly (p < 0.05). A 10-s sprint performed immediately prior to moderate-intensity exercise prevents glycaemia from falling during early recovery from moderate-intensity exercise in individuals with type 1 diabetes.
引用
收藏
页码:1815 / 1818
页数:4
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