The self-efficacy enhancing intervention is promising because it resulted in short-term increases in LPA. However, we targeted the current activity guidelines, ie, 30 minutes of moderate PA 5 days a week or 150 minutes a week. Subjects increased their PA by a mean of 140 minutes a week, but with LPA instead of moderate PA. It is possible that this volume of moderate PA is too strenuous for people with COPD and a more realistic target would be LPA, possibly a larger increase in LPA. As noted earlier, an increase in LPA could produce multiple health benefits and be more sustainable over time.