Final answer:
A 70 kg man running at 7.0 mph on a 2% grade would have an increased VO2 compared to level-surface running, however, estimating the exact VO2 requires additional information such as the relationship between energy expenditure and oxygen consumption.
Step-by-step explanation:
The estimated VO2 for a 70 kg man running at 7.0 mph (187.6 m/min) at a 2% grade cannot be calculated directly without further information, such as the energy expenditure rate and oxygen consumption relationship, which may be found in standardized tables or formulas specific to exercise physiology.
Generally, VO2 refers to the volume of oxygen a person consumes per minute and is indicative of aerobic capacity. The rate at which a person uses energy, as well as their VO2, increases with the intensity of the exercise, which includes factors like speed and the grade of running surface. For example, running on an incline, like a 2% grade, typically requires more energy than running on a flat surface, which would result in a higher VO2.
To estimate an individual's VO2 during activity, equations or regression models that consider weight, speed, grade, and sometimes age and sex are typically used. While specific VO2 cannot be provided without additional details, the increase in energy requirement due to the 2% incline would lead to a higher VO2 compared to running on a flat surface at the same speed.