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Greater Cortical Thickness in Elderly Female Yoga Practitioners-A Cross-Sectional Study.

Rui F. Afonso, Joana B Balardin, Sara W. Lazar, João R. Sato, Nadja Igarashi, Danilo F. Santaella, Shirley S Lacerda, Edson Amaro, Elisa H. Kozasa

Frontiers in Aging Neuroscience 2017 DOI: 10.3389/fnagi.2017.00201 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Cross-sectional study Peer reviewed
Sample size 42
Population Older women: 21 long-term hatha yoga practitioners (at least 8 years) and 21 age-matched women naive to yoga, meditation, or mind-body interventions
Intervention Hatha yoga
Duration At least 8 years of yoga practice
Measures cortical thickness (CT), T1-weighted MPRAGE MRI
Topics Meditation
Keywords MRI Aging Cortical thickness Prefrontal cortex Yoga
Key findings Long-term hatha yoga practitioners showed significantly greater cortical thickness in a left prefrontal cluster including portions of the lateral middle frontal gyrus, anterior superior frontal gyrus, and dorsal superior frontal gyrus compared with matched non-practitioners. The authors suggest this structural difference is consistent with yoga's association with brain regions supporting awareness, attention, executive functions, and memory, while noting the cross-sectional design.

Abstract

Yoga, a mind-body activity that requires attentional engagement, has been associated with positive changes in brain structure and function, especially in areas related to awareness, attention, executive functions and memory. Normal aging, on the other hand, has also been associated with structural and functional brain changes, but these generally involve decreased cognitive functions. The aim of this cross-sectional study was to compare brain cortical thickness (CT) in elderly yoga practitioners and a group of age-matched healthy non-practitioners. We tested 21 older women who had practiced hatha yoga for at least 8 years and 21 women naive to yoga, meditation or any mind-body interventions who were matched to the first group in age, years of formal education and physical activity level. A T1-weighted MPRAGE sequence was acquired for each participant. Yoga practitioners showed significantly greater CT in a left prefrontal lobe cluster, which included portions of the lateral middle frontal gyrus, anterior superior frontal gyrus and dorsal superior frontal gyrus. We found greater CT in the left prefrontal cortex of healthy elderly women who trained yoga for a minimum of 8 years compared with women in the control group.

Comparable studies

Other cross-sectional and survey studies on meditation, most cited first.

Study Year Design Participants
Construct Validity of the Five Facet Mindfulness Questionnaire in Meditating and Nonmeditating Samples Experienced meditators and nonmeditating comparison groups 2008 Cross-sectional study
Neural Correlates of Dispositional Mindfulness During Affect Labeling Adult participants 2007 Observational cross-sectional n = 27
Assessing mindfulness in children and adolescents: Development and validation of the Child and Adolescent Mindfulness Measure (CAMM). School-aged children and adolescents 2011 Cross-sectional validation study n = 1,413
Mindfulness and self-compassion as predictors of psychological wellbeing in long-term meditators and matched nonmeditators Experienced meditators and demographically matched nonmeditators 2012 Cross-sectional study n = 152
Mechanisms of Action in the Inverse Relationship Between Mindfulness and Psychological Distress Undergraduates 2008 Cross-sectional, correlational

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