CANDY is a single-center, prospective study designed to observe the evolution of clinical and motivational constructs during the APA program KHEOPS program, already offered to patients at the Centre Léon Bérard (CLB).

The main aim of the CANDY study is to observe the evolution of psychological constructs derived from M-PAC during a 13-week KHEOPS APA program in women undergoing treatment for breast cancer.

Secondary objectives are:

• to examine the feasibility of psychological measures and participation in the KHEOPS program
• to observe cancer-related psychological symptoms during the KHEOPS program and to investigate the links between the temporal evolution of psychological factors (clinical and motivational) and adherence to the KHEOPS program, as well as the level of post-program PA during and after the KHEOPS program in patients followed at the CLB.

Inclusion Criteria

• Woman aged ≥ 18 years
• Diagnosed with non-metastatic breast cancer
• Undergoing treatment or after surgery
• Participating in the CLB KHEOPS program, either face-to-face or distance learning
• Have a smartphone, computer or tablet to answer the 2 weekly online weekly online questionnaires and to follow APA sessions for patients following the patients following the KHEOPS program remotely
• Having received a study information note and having made a declaration of non-opposition
• Affiliated with a social security scheme
• Able to read, write and understand French

Exclusion Criteria:

• Unable to be followed for medical, social, family, geographical or psychological reasons, for the duration of the study.
• Have difficulty completing a questionnaire alone
• Deprived of liberty by judicial or administrative decision, or adults protected by law
• Concurrently participating in another PA study

Patients with breast cancer, with a current treatment, followed at CLB