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Type 1 diabetes mellitus (T1DM) is a chronic autoimmune condition characterized by the destruction of insulin-producing beta cells in the pancreas, necessitating lifelong insulin therapy. This study explores the impact of physical activity on glycemic control and overall health in individuals with T1DM. Despite its proven benefits, including improved cardiovascular health, lower HbA1c levels, and reduced insulin requirements, over 60% of T1DM patients do not engage in regular exercise. Different types of physical activities—such as aerobic, anaerobic, and high-intensity interval training (HIIT)—affect metabolic responses differently. Aerobic exercises and HIIT have shown significant improvements in health-related quality of life (HRQoL) and reduced incidence of severe complications, such as diabetic ketoacidosis. However, exercise-induced hypoglycemia remains a significant risk, especially if exercise follows recent severe hypoglycemic episodes. Proper management strategies include adjusting insulin doses, monitoring glucose levels, and carbohydrate intake. The study highlights the importance of tailored exercise plans and preventive measures to mitigate risks such as nocturnal hypoglycemia and elevated ketones. Ultimately, effective integration of physical activity into diabetes management can lead to enhanced overall health and quality of life for individuals with T1DM.

Introduction: Type 1 diabetes is a disease requiring complex treatment: intensive functional insulin therapy with multiple subcutaneous insulin injections (Multiple daily doses of insulin- MDI) or continuous subcutaneous insulin infusion (CSII) with a personal insulin pump. Type 1 diabetes is a disease with many complications including cardiovascular diseases. A key element in good disease control is adequate patient education. This paper will focus on physical activity and its impact on the course of the disease. Aim of the study: To research the impact of physical activity on the course of type 1 diabetes. To reinforce medical professionals' knowledge of exercise management among patients with type 1 diabetes. State of Knowledge: Regular physical exercise is beneficial for diabetes control, at the same time reducing the need for insulin. It also reduces the risk of dangerous late cardiovascular complications. Meta-analyses have shown a significant effect of physical activity on the reduction of HbA1c, BMI, triglycerides and total cholesterol. Continuous glucose monitoring (CGM) systems are recommended for physically active people with type 1 diabetes. Optimal glycaemia at the start and during sport are: for aerobic exercise 126-180 mg/dl (7-10 mmol/l), for anaerobic exercise 90-180 mg/dl (5-10 mmol/l). The reduction in insulin dose depends on the type of exercise, the length of the exercise, the method of treatment, and the pre-exercise blood glucose level. Conclusion: Physical exercise improves the control of type 1 diabetes and therefore reduces the risk of complications of the disease including cardiovascular diseases. Type 1 diabetes is not a contraindication to both amateur and professional sport. However, many variables need to be considered. Every patient with type 1 diabetes must be properly trained before starting exercise.