Pre-exercise Insulin and Carbohydrate Strategies in the Exercising T1DM Individual

  • Richard M. Bracken
  • Daniel J. West
  • Stephen C. Bain


This chapter will examine the evidence that currently exists for the use of pre-exercise strategies comprised of changes in exogenous insulin administration and carbohydrate ingestion to improve post-exercise glycemia. Physical exercise is a complex metabolic stressor, the magnitude of which is determined by its duration, intensity, mode, and frequency. Pre-exercise reductions in exogenous insulin and/or carbohydrate consumption improve glycemia and may improve performance especially when considering endurance exercise. However, the exact determinants of the strategy, namely, the degree of rapid-acting insulin reduction and the amount, type, and timing of carbohydrate, still remain to be determined. With an increase in the use of basal-bolus routines and knowledge of “carbohydrate counting,” more confidence can be gleaned from research examining manipulations of these insulins combined with ingestion of different carbohydrates in type 1 individuals. Additionally, detailed knowledge of the effects of exercise in the T1DM individual offers more potential to avoid post-exercise hypoglycemia.


Resistance Exercise Blood Glucose Concentration Glycemic Index Insulin Lispro Insulin Detemir 


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Copyright information

© Springer-Verlag London 2012

Authors and Affiliations

  • Richard M. Bracken
    • 1
  • Daniel J. West
    • 2
  • Stephen C. Bain
    • 3
  1. 1.Health and Sport Science, College of EngineeringSwansea UniversitySwanseaUK
  2. 2.Department of Sport and ExerciseNorthumbria UniversityNewcastle upon TyneUK
  3. 3.Institute of Life Sciences, College of MedicineSwansea UniversitySwansea, WalesUK

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