Diet and Exercise Intervention Adherence and Health-Related Outcomes among Older Long-Term Breast, Prostate, and Colorectal Cancer Survivors

摘要

Background Diet and exercise interventions for cancer survivors result in health benefits; however, few studies have examined health outcomes in relation to adherence. Purpose We examined associations between adherence to components of a diet-exercise intervention and survivors' physical and mental health.Methods A randomized controlled trial tested a telephone and mailed print intervention among 641 older, overweight, long-term survivors of breast, prostate, and colorectal cancer. Dietary and exercise behaviors were assessed at 14 time points throughout the year-long intervention; health outcomes were examined postintervention.Results Telephone session attendance had significant indirect relationships with health outcomes through intervention-period exercise and dietary behavior. Attendance showed positive indirect relationships with physical function (beta = 0.11, p<0.05), basic and advanced lower extremity function(beta=0.10,p<0.05/beta=0.09,p<0.05), and mental health (beta= 0.05, p<0.05), and a negative indirect relationship with body mass index (beta=-0.06,p<0.05).Conclusions Session attendance is vital in facilitating improvement in health behaviors and attendant outcomes (Clinicaltrials.gov number NCT00303875).