Effects of Yoga-Based Interventions on Cancer-Associated Cognitive Decline: a Systematic Review
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INTEGRATIVE CARE (C LAMMERSFELD, SECTION EDITOR)
Effects of Yoga-Based Interventions on Cancer-Associated Cognitive Decline: a Systematic Review Mohamad Baydoun 1 & Devesh Oberoi 1 & Michelle Flynn 2 & Chelsea Moran 2 & Andrew McLennan 1 & Katherine-Ann L. Piedalue 1 & Linda E. Carlson 1
# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Purpose of Review To summarize and evaluate evidence available on the effects of yoga on cancer-associated cognitive decline (CACD). Recent Findings A systematic review was conducted using four databases of articles published before January 1, 2020. Ten articles met the inclusion criteria (six randomized controlled trials, two single-arm studies, one non-randomized controlled trial, and one case series study). Studies were predominantly conducted with breast cancer patients using low-intensity hatha yoga programs. Of the 10 articles, five reported some positive effects on CACD, but significant biases were possible due to design shortcomings. Cohen’s d effect sizes ranged from |0.03| to |0.74|. Summary The evidence to date is insufficient to suggest that yoga is beneficial for attenuating CACD. More rigorous trials controlling for non-specific factors are warranted. The field would also benefit from examining self-delivered modes of yoga for treating CACD in various cancer populations to enhance practice sustainability and generalizability. Keywords Cancer . Cancer-associated cognitive decline . Psycho-oncology . Yoga . Breast cancer . Complementary therapies . Integrative oncology
Introduction Due to improved detection and treatment, the number of cancer survivors is projected to grow, with an estimated > 20 million cancer survivors in the USA by 2026 [1]. Cancer
and its treatments are associated with a myriad of adverse side effects. Cancer-associated cognitive decline (CACD), defined as deficits in one or more of the cognitive domains of information processing speed, executive function, attention, and memory/concentration [2], is a particularly troublesome
This article is part of the Topical Collection on Integrative Care Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11912-020-00960-5) contains supplementary material, which is available to authorized users. * Linda E. Carlson [email protected]
Andrew McLennan [email protected]
Mohamad Baydoun [email protected]
Katherine-Ann L. Piedalue [email protected]
Devesh Oberoi [email protected] Michelle Flynn [email protected] Chelsea Moran [email protected]
1
Cumming School of Medicine, Department of Psychosocial Oncology, University of Calgary, Calgary, Canada
2
Department of Psychology, University of Calgary, Calgary, Canada
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cancer side-effect because it can affect treatment adherence, compromise quality of life, and persist long term [3]. There is a long history of research examining CACD among patients with brain tumors and receiving treatments that directly affect the cen
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