The effect of exercise and green tea consumption on fat loss

INTERVENTION: The intervention will include 12 weeks of high intensity intermittent exercise and ingestion of green tea. Groups will be control, exercise, green tea, and green tea/exercise. The exercise group will perform high intensity intermittent exercise (HIIE) three times per week for 12 weeks. Each session will be 20 minutes duration and will involve sprinting on a stationary bike for 8 seconds and easy pedaling for 12 seconds. This is repeated for the 20 minutes. Each session will be supervised and heart rate will be monitored throughout. The speed of pedaling will be 110 revolutions per minute and the resistance on the bike will be 60% of each subject's VO2max which will be assessed at the start and end of the trial. Typically, the resistance on the bike will be from .75 to 1.5 kg. The green supplementation group will ingest 1500 mg of commercial green tea (GNC Herbal Plus) in capsule form (3 capsules), containing 375 mg of epigallocatechin gallate (EGCG). Each capsule, containing 125 mg EGCG, will be ingested after each meal. This is the standard dose in these kinds of green tea trials. The exercise/green tea group will ingest the green tea and perform the exercise. CONDITION: Insulin resistance Overweight PRIMARY OUTCOME: Body fat will be assessed by DEXA and two scans of computed tomography at St Vincents Hospital pre and post only. Bioimpedance (Tanita) will be used to monitor weekly body composition. SECONDARY OUTCOME: Insulin resistance will be assessed by fasting insulin and glucose (HOMA). Bloods will be taken by qualified personnel at 0, 3, 6, and 12 weeks. INCLUSION CRITERIA: Male, 18‐35 years, BMI 25‐30