Gymnastik- och idrottshögskolan, GIH

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High-intensity exercise during chemotherapy induces beneficial effects 12 months into breast cancer survivorship.
Karolinska Institute, Stockholm, Sweden.ORCID iD: 0000-0002-5140-9098
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2019 (English)In: Journal of cancer survivorship, ISSN 1932-2259, E-ISSN 1932-2267, Vol. 13, no 2, p. 244-256Article in journal (Refereed) Published
Abstract [en]

PURPOSE: Whether the benefits of exercise during chemotherapy continue into survivorship is not well-known. Here, the aim was to examine the effects of two exercise interventions on self-reported health-related and objectively measured physiological outcomes 12 months following commencement of chemotherapy.

METHODS: Two hundred and forty women with breast cancer stage I-IIIa were randomized to 16 weeks of high-intensity aerobic interval training combined with either resistance training (RT-HIIT), or moderate-intensity aerobic training (AT-HIIT), or to usual care (UC).

PRIMARY OUTCOME: cancer-related fatigue (CRF); secondary outcomes: quality of life (QoL), symptom burden, muscle strength, cardiorespiratory-fitness, body mass, and return to work.

RESULTS: Compared to UC, both RT-HIIT and AT-HIIT significantly counteracted increases in total CRF (ES = - 0.34; ES = - 0.10), daily life CRF (ES=-0.76; ES=-0.50, and affective CRF (ES=-0.60; ES=-0.39). Both RT-HIIT and AT-HIIT reported significantly lower total symptoms (ES = - 0.46, ES = - 0.46), and displayed gains in lower limb (ES = 0.73; ES = 1.03) and handgrip muscle strength (surgery side ES = 0.70, ES = 0.71; non-surgery side ES = 0.57, ES = 0.59). AT-HIIT displayed significant reductions in body mass (ES = - 0.24), improved QoL: role (ES = 0.33) and emotional functioning (ES = 0.40), and a larger proportion had returned to work (p = 0.02) vs UC.

CONCLUSION: These findings emphasize the beneficial effects of supervised high-intensity exercise during chemotherapy to improve the health and to reduce societal costs associated with prolonged sick leave for patients with breast cancer several months following chemotherapy.

IMPLICATIONS FOR CANCER SURVIVORS: These findings provide important information with substantial positive consequences for breast cancer survivorship. High-intensity exercise programs during chemotherapy and support to maintain physical activity can be a powerful strategy to manage or prevent many of the short- and long-term adverse effects of treatment for the increasing cohort of cancer survivors.

Place, publisher, year, edition, pages
2019. Vol. 13, no 2, p. 244-256
Keywords [en]
Breast cancer, Cancer survivorship, Cancer-related fatigue, High-intensity interval training, Randomized controlled trial
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Cancer and Oncology
Identifiers
URN: urn:nbn:se:gih:diva-7700DOI: 10.1007/s11764-019-00747-zPubMedID: 30912010OAI: oai:DiVA.org:gih-7700DiVA, id: diva2:1775861
Available from: 2023-06-27 Created: 2023-06-27 Last updated: 2023-06-27

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Bolam, Kate

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