IRCT20220906055902N1 IRCT 2023-11-01 Islamic Azad University The effect of exercise and caffeine on health and performance indicators The effect of eight weeks of spinning training and caffeine supplementation on lipid profile, body composition and functional fitness of overweight women 2023-10-14 anticipated 40 Complete https://irct.ir/trial/65761 interventional Randomization: Not randomized, Blinding: Single blinded, Placebo: Used, Assignment: Factorial, Purpose: Supportive, Blinding description: The study analyst will not be informed of the nature of the groups and we will identify each group with a number. 3 Overweight. Intervention 1: Intervention group: Spinning exercise + caffeine; Spinning training will be done by pedaling on special bikes for 8 weeks, 3 sessions a week, with an intensity of 40-85% of the maximum reserve heart rate, 30-40 minutes per session and with a resistance of 50-90 revolutions per minute. In order to comply with the overload principle, the intensity, duration and resistance of the bike will be increased once every two weeks. Caffeine powder at the rate of 5 mg/kg of body weight will be consumed 60 minutes before the start of the activity with a glass of water. Intervention 2: Control group: They will do their normal daily activities and will not practice spinning and consume caffeine or placebo. Intervention 3: Intervention group: Spinning exercise + placebo; This group will perform the same spinning exercise as the Spinning + Caffeine group. But instead of caffeine, they will use capsules containing dextrose in the amount of 5 mg/kg 60 minutes before the activity as a placebo. Intervention 4: intervention group: caffeine; This group will use capsules containing caffeine with a dose of 5 mg/kg along with a glass of water at the same hours and days as the other intervention groups. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information.