The nurse researcher submits a proposal for an initial study to evaluate the effects of regular ...

The nurse researcher submits a proposal for an initial study to evaluate the effects of regular moderate exercise on asthma control scores in adolescents with asthma. To achieve increased control in the initial study, the researcher will do which of the f
 
  a. Ask subjects to keep track of time spent exercising in a journal.
  b. Have subjects exercise on treadmills in the clinic three times weekly.
  c. Choose subjects classified as having moderate intermittent asthma symptoms.
  d. Limit participants to adolescent males who have asthma.