Inclusion Criteria:  Inclusion criteria for patients group:  Individuals aged 18-65 years diagnosed with Type 1 diabetes by basic clinical and laboratory techniques Individuals using pump and injection insulin to control type 1 diabetes  Inclusion criteria for healthy group:  Willing to participate to the study Between ages of 18 and 65  Exclusion Criteria:  Exclusion criteria for patients group:  Individuals with body mass index> 30 kg / m² those with lower limb amputation those with any heart disease Individuals with type 2 diabetes Individuals who smoke 10 pack×years Anemia Individuals with diabetic foot Individuals with orthopedic problems Individuals with balance problems Myocardial infarction or other acute cardiac events within 2 days Unstable angina Uncontrolled heart rhythm causing symptoms or hemodynamic effects Uncontrolled symptomatic heart failure Acute pulmonary embolism or pulmonary infarction Acute myocarditis or pericarditis Suspected or known dissection aneurysm, Having an acute systemic infection accompanied by fever, body aches or swollen lymph nodes  Exclusion criteria for healthy group:  Body mass index> 30 kg / m² Smoking exposure 10 pack×years Individuals with any chronic illness