INS and type 2 diabetes mellitus: First, to our knowledge, this is the first existing systematic review to compare the effects of HIIT and MICT or non-exercise on glycemic control (e.g., HbA1c, insulin, and fasting glucose); body composition (e.g., body weight, body fat, BMI, and waist circumference); and cardiorespiratory fitness (e.g., VO2peak) among people with T2D.