Can working out help you avoid or recover from a cold or flu?

My latest Science of Willpower column on Psychology Today is a response to a wonderful article in the NYT:

"A recent New York Times article by Gretchen Reynolds asked and answered the question: Does exercise boost immunity? The answer may surprise some, and its lessons extend well beyond the world of working out."

My Science of Willpower class starts at Stanford this Monday (still time to register, through 10/26) -- I look forward to blogging some of the interesting insights and questions that come up!

New Science of Willpower Study: The Virtue of Pessimism

Check out my latest post on Psychology Today.


"Two people are beginning a weight-loss program. One is an optimist and the other a realist -- perhaps even a pessimist. Who has the better chance of losing weight?

According to a new study from Doshisha University in Japan, it's the pessimist. People who began a six-month program of nutrition, exercise, and counseling were less likely to lose weight if they had an optimistic personality.

This at first doesn't make sense. We usually associate optimism with greater success and better health. There's plenty of research showing that optimists have stronger social relationships, are happier, and even live longer. So why wouldn't optimism help people lose weight?"........ [click to read full column]

Study: Saito, H., Kimura, Y., Tashima, S., et al. (2009). Psychological factors that promote behavior modification by obese patients. BioPsychoSocial Medicine 3:9 (in press).

STUDY SUMMARY: Yoga Decreases Breathing Distress and Improves Functional Performance in People with Chronic Obstructive Pulmonary Disease

Source: The Journal of Alternative and Complementary Medicine, 15(3): 225-234. March 2009.
Authors: Donesky-Cuenco D, Nguyen HQ, Paul S, & Carrieri-Kohlman V.
Contact: DorAnne Donesky-Cuenco, Department of Physiological Nursing, School of Nursing, Box 0610, University of California, San Francisco, CA 94143-0610, or Virginia Carrieri-Kohlman at ginger.carrieri-kohlman@nursing.ucsf.edu.

This pilot study examined the safety, feasibility, and benefits of a yoga practice in older adults with chronic obstructive pulmonary disease (COPD). 21 women and 8 men (mean age of 69.9 ± 9.5 years) were randomly assigned to either a standard care control group or a yoga therapy intervention. The yoga group participated in a 12-week, twice-weekly yoga program designed specifically for individuals with COPD. The practice included 9 basic asanas and visama vritti pranayama (timed breathing).

To examine the safety of the yoga practice, researchers measured heart rate, oxygen saturation, dyspnea, and pain during the practice. To examine feasibility, researchers recorded participant adherence and asked participants how much they enjoyed the practice and how difficult they found it. To test the benefits of yoga, researchers measured breathing pain and distress before and after the 12-week program, as well as other measures of health, including exercise performance and health-related quality of life.

The yoga practice was both safe and feasible for the participants, providing more evidence that a well-planned yoga intervention is appropriate for individuals with COPD. Compared to the standard-care control group, participants in the yoga group showed a significant reduction in breathing distress. The yoga group also showed improved physical strength and walking speed in a timed exercise test, as well as higher self-reported of life.

This study is limited by its size, and should be interpreted as providing encouraging but modest evidence for the idea that yoga benefits individuals with COPD. However, the number of these small-scale studies is increasing, and being reported by diverse research groups, as illustrated by the two studies reported here.

This research summary was orginally prepared for the International Association of Yoga Therapists. IAYT is a professional organization for yoga therapists, yoga teachers, researchers, and healthcare professionals who use yoga in their practice.