A 24-year-old man is seen for a routine physical examination.At rest,his blood pressure is 120/80 mm Hg and his heart rate is 75 beats/minute.He is advised to begin an exercise program.When he returns 3 months later,his heart rate has decreased to 50 beats/minute (asymptomatic).Which of the set of values below would you expect to observe in this patient at rest in comparison with those 3 months ago?