exercise builds endurance and strengthens the heart, especially when your heart rate is in the target heart rate zone. It also helps your lungs work more efficiently.

Muscle mass

Aerobic

Strength

Anaerobic

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.

When lifting heavy loads off the ground, the majority of the weight should be lifted by which of the following? a. arms b. legs c. back d. stomach

20. identify the main term from the following statement: gastrostomy with vagotomy