49. Which of the following outcomes or procedures is NOT mentioned in the passage? (A) Researchers estimated each participant’s oxygen consumption at target heart rates to equalize energy expenditure across groups. (B) Body-composition improvements were more pronounced during the first four weeks than during the final four weeks of the intervention. (C) Heart-rate monitors and ratings of perceived exertion were used to verify that participants maintained the intended training intensity. (D) Blood samples were also analyzed for fasting glucose and insulin sensitivity, both of which improved significantly more.