Slow Jogging for Breast Cancer Survivors

Summary

Breast cancer survivors frequently experience persistent sleep disturbance, cancer-related fatigue, and reduced health-related quality of life after completion of primary treatment. Although exercise is recommended as an important component of survivorship care, evidence regarding the effectiveness of slow jogging remains limited. This investigator-initiated, single-center, parallel-group randomized controlled trial aims to evaluate the effectiveness of a standardized 12-week slow jogging exercise program in women aged 20 years or older with hormone receptor-positive Stage I-IV breast cancer who have completed primary cancer treatment within the previous 12 months. Participants will be randomized using permuted block randomization (block size = 6) to receive either a slow jogging intervention plus usual care or usual care alone. The primary outcome is sleep quality measured by the Chinese Pittsburgh Sleep Quality Index (CPSQI). Secondary outcomes include cancer-related fatigue measured by the Taiwanese Brief Fatigue Inventory (BFI-T) and health-related quality of life measured by the Functional Assessment of Cancer Therapy-Breast (FACT-B). Outcomes will be assessed at baseline and at Weeks 4, 8, and 12.

Eligibility

Inclusion Criteria

1. Female breast cancer survivors aged 20 years or older.
2. Histologically confirmed hormone receptor-positive breast cancer (Stage I-IV) and considered suitable for exercise intervention by the treating physician.
3. Completed primary cancer treatment (surgery, chemotherapy, or radiotherapy) within the previous 12 months; participants receiving ongoing anti-HER2 targeted therapy and/or endocrine therapy are eligible.
4. Able to independently operate a smartphone and willing to install and use the study application.
5. Self-reported sleep disturbance within the previous two weeks, defined as a Single-item Sleep Quality Scale (SQS) score ≥ 6.
6. Willing to participate and provide written informed consent.

Exclusion Criteria

1. History of cancer treatment-related cardiovascular complications or judged by the treating physician to be unsuitable for exercise.
2. Musculoskeletal disorders affecting lower-extremity function (e.g., plantar fasciitis, knee osteoarthritis, ankle degenerative disease) that limit exercise participation.
3. Currently participating in another structured moderate- or vigorous-intensity aerobic exercise program (≥3 sessions/week, ≥30 minutes/session for ≥3 consecutive weeks).
4. Any other medical or psychological condition judged by the investigator to interfere with safe participation or completion of the study.

Conditions3

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