Trial reportBreast cancer research and treatment2026
Effect of a supervised intermittent exercise program on insomnia in breast cancer patients undergoing chemotherapy.
Trial report in Breast cancer research and treatment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04867096 (Effects of a Supervised Exercise on Sleep in Patients With Non Metastatic Breast Cancer During Chemotherapy), which is not on this map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effects of a Supervised Exercise on Sleep in Patients With Non Metastatic Breast Cancer During Chemotherapy
Who cites it
2 citing papers in PubMed.
- Scalable Community-Based Exercise to Support Physical Activity in Cancer Care: A Hybrid Effectiveness-Implementation Study.Cancers · 2026Article
- Insomnia in Breast Cancer: A Neglected Symptom Cluster.Journal of clinical medicine · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPatients with localized breast cancer receiving adjuvant chemotherapy often experience sleep disturbances, especially insomnia, which significantly impacts quality of life. This study primarily aimed to evaluate the effects of a 12-week exercise program on insomnia, with secondary outcomes on sleep quality, anxiety/depression, fatigue, pain, and exercise adaptation.
methodsIn this randomized controlled multicenter trial, 20 women with non-metastatic breast cancer and clinically diagnosed insomnia were assigned to a control or training group. The training group underwent a 12-week supervised intermittent aerobic exercise program during chemotherapy. The primary outcome was objective total sleep time; secondary outcomes included insomnia severity, sleep architecture, sleep quality, anxiety/depression, fatigue, pain, and cardiorespiratory capacity. Assessments were performed before chemotherapy (T-1), at baseline (T0), and post-intervention (T3) using polysomnography, actigraphy, validated questionnaires, and a maximal graded exercise test.
resultsThe prevalence of clinical insomnia increased from 47% before diagnosis to 71% at T-1, reaching 100% at T0. Total sleep time did not increase after training (p = 0.97), although sleep fragmentation decreased. Clinical improvement was observed in physical and activity-related fatigue. Finally, both submaximal exercise adaptation parameters (power and VO
conclusionsThe training did not increase total sleep time, likely due to insomnia's multifactorial origin. However, training yielded beneficial effects on objective sleep quality and exercise-induced adaptation. Future research is needed to investigate the various etiologies of insomnia to develop tailored and personalized management approaches. CLINICAL TRIALS NUMBER: NCT04867096.
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Registered trials
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