Explaining the Aerobic Exercise Intention-behavior Gap in Cancer Survivors

Area of Science:

• Oncology
• Behavioral Science
• Exercise Physiology

Background:

• Hematologic cancer survivors (HCS) often face challenges in maintaining physical activity post-treatment.
• The intention-behavior gap, where individuals do not act on their intentions, is a significant barrier to exercise adherence in this population.

Purpose of the Study:

• To quantify the aerobic exercise intention-behavior gap in HCS.
• To identify factors influencing the formation of exercise intentions and the translation of these intentions into actual behavior.

Main Methods:

• A cross-sectional survey was administered to 606 HCS assessing aerobic exercise motivation and behavior.
• Logistic regression analyses were used to examine correlates of intention formation and intention translation.

Main Results:

• 71% of HCS formed an intention to exercise aerobically, but only 44% met guidelines.
• Factors like positive attitude, perceived control, younger age, and higher education predicted intention formation.
• Intention translation was influenced by a sense of obligation, self-regulation, attitude, perceived control, planning, being female, and younger age.

Conclusions:

• Intention alone is insufficient for HCS to achieve recommended aerobic exercise levels.
• Effective interventions must target determinants of both intention formation and behavior change to promote exercise in cancer survivors.