31. Cutting Edge Brain-Body Fitness Based on Neuroscience and Play!
CREATOR & FOUNDER, Denise Medved
Brain Health Fitness
It’s Never too late to begin. It’s Never too early to start!
Summary of the evidence on modifiable risk factors for cognitive decline and dementia: A population-based perspective
Matthew Baumgart, Heather M. Snyder, Maria C. Carrillo, Sam Fazio, Hye Kim, Harry Johns
An estimated 47 million people worldwide are living with dementia in 2015, and this number is projected to triple by 2050. In the absence of a disease-modifying treatment or cure, reducing the risk of developing dementia takes on added importance. In 2014, the World Dementia Council (WDC) requested the Alzheimer's Association evaluate and report on the state of the evidence on modifiable risk factors for cognitive decline and dementia. This report is a summary of the Association's evaluation, which was presented at the October 2014 WDC meeting. The Association believes there is sufficient evidence to support the link between several modifiable risk factors and a reduced risk for cognitive decline, and sufficient evidence to suggest that some modifiable risk factors may be associated with reduced risk of dementia. Specifically, the Association believes there is sufficiently strong evidence, from a population-based perspective, to conclude that regular physical activity and management of cardiovascular risk factors (diabetes, obesity, smoking, and hypertension) reduce the risk of cognitive decline and may reduce the risk of dementia. The Association also believes there is sufficiently strong evidence to conclude that a healthy diet and lifelong learning/cognitive training may also reduce the risk of cognitive decline.
Cognitive training interventions based on repetitive practice on cognitive processes have been effective in improving the trained process but not so much for other untrained cognitive functions (Ball et al., 2002, 2007; Hampstead et al., 2012; Mozolic et al., 2011). Some clinical trials, however, have shown transfer to other domains different than that of the trained exercises (Cheng et al., 2012; Mahncke et al., 2006; Oswald et al., 2006; Richmond et al., 2011; Willis et al., 2006). Computerized training is the preferred option in most of the intervention studies as the program can automatically adapt to the trainee’s daily performance. The intervention could be useful depending on the extent of the improvement to abilities not directly trained during the intervention. The degree to which a learned skill is shown in proximal (near transfer) or more distant (far transfer) tasks and contexts is central regarding cognitive training interventions. Near transfer effects are found after training in tasks close to the trained task (e.g., improvements on a verbal WM task after training on a spatial WM task). Far transfer effects are shown in tasks very different from those of trained tasks (e.g., improvements on intelligence tests scores, attention, arithmetic, language abilities, or everyday activities). Unfortunately, evidence for the effective transfer of cognitive training to untrained tasks is mixed (Tidwell et al., 2014) with some studies suggesting positive results, while others showing none or only a limited improvement
In summary, computerized cognitive training has shown small to moderate improvements in certain cognitive domains with no significant effects in executive functions. Unsupervised training at home was not effective compared to group-based supervised training at a center or laboratory. Moreover, training regimes of more than 3-sessions per week seem ineffective. Working memory and executive functions do not improve after training and may require perhaps multi-modal interventions.
Review
Maintaining older brain functionality: A targeted review
Soledad Ballesteros a,∗, Eduard Kraft b, Silvina Santanac, Chariklia Tziraki d
In 2014, the Stanford University Center on Longevity and Germany's Max Planck Institute for Human Development convened international cognitive psychologists and neuroscientists to hash out a consensus on the state of evidence on brain training, which was blunt: "Claims promoting brain games are frequently exaggerated and at times misleading. ... To date, there is little evidence that playing brain games improves underlying broad cognitive abilities, or that it enables one to better navigate a complex realm of everyday life."
Bamidis 2014
It has been proposed that the physical and cognitive exercise might interact to induce larger functional benefits (Hötting andRöder, 2013; Kempermann et al., 2010; Kraft, 2012; Lustig et al.,2009). Several interventional studies yielded consistent results inline with this hypothesis by demonstrating larger benefits on cogni-tive test performance for combined physical and cognitive activitythan for each activity alone (Anderson-Hanley et al., 2012; Maillotet al., 2012; Mortimer et al., 2012). Those studies comprise anobservational cross-sectional (Eskes et al., 2010), a longitudinal(Karp et al., 2006), as well as two controlled interventional designs(Fabre et al., 2002; Oswald et al., 2006).