Background: Psychological interventions, such as relaxation training,
have been applied to strengthen resistance to disease. There is eviden
ce that relaxation can modify immune parameters in healthy populations
and in chemotherapy naive cancer patients. Methods: In this study, 22
patients receiving chemotherapy for ovarian cancer were allocated to
relaxation training with a clinical psychologist or to a control group
. After 2 months' training, blood was sampled 2 days before chemothera
py in the patients' homes, and at the hospital prior to treatment. Res
ults: On average, the intervention group showed higher lymphocyte coun
ts, and a tendency to higher white blood cell numbers as compared to t
he control group. No significant effects were found in proliferative r
esponses to mitogen and natural killer cell activity after interventio
n. Relaxation training did not modify the magnitude of changes in immu
ne variables between home samples and at the hospital in anticipation
of treatment. Conclusion: The study suggests that relaxation training
can positively affect immune parameters in cancer patients, even if tr
aining is performed during myelosuppressive therapy.