Comparative Effects of High-Intensity Interval Training and Continuous Endurance Training on Glycemic Control, BMI, Vo₂ Max, Pulmonary Function, and Physical Activity Among Prediabetic Patients

Prediabetics is a condition where blood sugar levels are normal but not yet high enough to be diagnosed as type 2 diabetes. This phase offers a crucial point for timely intervention to delay or prevent type 2 diabetes. The objective of the study will be to find the effects of high intensity interval and continuous endurance training on glycemic control, BMI, Vo2 Max, pulmonary function and physical activity among prediabetic patients. Study design will be randomized control trial. Total 80 participants will be enrolled in study. The data will be collected from faculty of Riphah International University, Lahore. The study will be completed within 8 months after approval of synopsis. A simple random sampling will be used to assign the groups: group A and group B. Group A will be assigned high intensity interval training, and group B will be assigned to continuous training. Both interventions will be conducted over a 12-week period, with pre- and post-intervention assessments. Each exercise session constitutes a 5-minute warm up and finished with a 5-minute cool-down. Participants aged between 35 to 54 years with sedentary lifestyle, Stable medical condition, and stable body weight with changes less 3kg in the past 6 months will be included in this study. The study will exclude individuals with uncontrolled hypertension, history of heart disease, myocardial infarction and stroke and diagnosed type 2 diabetes, use of specific medications, severe obesity, high fasting blood glucose, previous history of respiratory problems, and smoking. Primary outcomes include changes in fasting blood glucose, HbA1c levels, and insulin sensitivity. Pre and post values of glucose level and FEV1, FVC and FEV1/FVC will be calculated. Secondary outcomes will assess BMI, VO₂ max through graded exercise testing, pulmonary function using spirometry, and physical activity levels measured by validated questionnaire of short form of IPAQ-SF. Data will be analysed using SPSS 24 and Shapiro wilks test will be applied to assess the normality of data. After assesing the normality of data paired sample/independent t test/ANOVA test will be applied to find which technique will be more beneficial for prediabetic patients.